TUAN A NGUYEN M.D.
NPI 1639393762
Radiology - Neuroradiology in Stanford, CA


Quality Rating: 82.85 out of 100 score

NPI Status: Active since April 12, 2007

Contact Information

300 PASTEUR DR
ROOM S047
STANFORD, CA
ZIP 94305
Phone: (650) 723-7426

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  • Individual
  • Male
  • Years of Experience 24
  • Radiology
  • Neuroradiology
  • Accepts Medicare Approved Payment
  • PECOS Enrolled

About TUAN NGUYEN

This page provides the complete NPI Profile along with additional information for Tuan Nguyen, a provider established in Stanford, California with a medical specialization in Radiology, focusing in neuroradiology and more than 24 years of experience. He graduated from University Of California, San Diego School Of Medicine in 2002. The healthcare provider is registered in the NPI registry with number 1639393762 assigned on April 2007. The practitioner's primary taxonomy code is 2085N0700X with license number A88605 (CA). The provider is registered as an individual and his NPI record was last updated 18 years ago.

NPI
1639393762
Provider Name
TUAN A NGUYEN M.D.
Gender
Male
Entity Type
Individual
Location Address
300 PASTEUR DR ROOM S047 STANFORD, CA 94305
Location Phone
(650) 723-7426
Mailing Address
1434 BIRCHMEADOW LN SAN JOSE, CA 95131
Mailing Phone
(408) 834-5079
Medical School Name
UNIVERSITY OF CALIFORNIA, SAN DIEGO SCHOOL OF MEDICINE
Graduation Year
2002
Is Sole Proprietor?
Yes
Enumeration Date
04-12-2007
Last Update Date
07-08-2007
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Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification

Radiology Neuroradiology

Taxonomy Code
2085N0700X
Type
Allopathic & Osteopathic Physicians
License No.
A88605
License State
CA
Taxonomy Description
A radiologist who diagnoses and treats diseases utilizing imaging procedures as they relate to the brain, spine and spinal cord, head, neck and organs of special sense in adults and children.

Medicare Participation & PECOS Enrollment Status

Tuan Nguyen is registered with Medicare and accepts claims assignment, this means the provider accepts the approved amount for the cost of rendered services as full payment. Participating providers may not charge beneficiaries more than the approved amount for their services. Please keep in mind that beneficiaries still have to pay a coinsurance or copayment amount for a visit or service.

Tuan Nguyen is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.

What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.

  • Is the provider registered in PECOS? Yes

  • PECOS PAC ID: 7618075698

    What is the PECOS Associate Control ID?
    A PAC ID is a unique 10-digit number assigned to an individual or organization healthcare provider in PECOS. The PAC ID is used to link together all the provider information, like tax identification numbers and organizational names. A PAC ID can be connected to multiple Enrollment IDs if an individual or organization has enrolled in PECOS more than once.

  • PECOS Enrollment ID: I20070614000685

    What is the Provider Enrollment ID?
    The Enrollment ID is a unique alphanumeric 15-digit code assigned to each new provider's PECOS enrollment application. The Enrollment ID is used to link together all the provider enrollment information like enrollment type, state, provider specialty, and reassignment of benefits.

  • Accepts Medicare Assignment? Yes

    What does it mean "accepts medicare assignment"?
    When a provider accepts Medicare assignment, the provider agrees to be paid directly by Medicare and to accept the payment amount approved by Medicare. Additionally, the provider agrees to not bill patients for more than the Medicare deductible and coinsurance amounts.
    A provider who doesn't accept assignment may charge you up to 15% over the Medicare-approved amount. This is known as the limiting charge. You may have to pay this amount, or it may be covered by another insurer.

  • Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes

  • Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes

  • Eligible to Order or Refer a Home Health Agency (HHA): Yes

  • Eligible to Order or Refer Power Mobility Devices: Yes

Areas of Expertise

The following services and procedures, recently provided to Medicare patients, illustrate the range of care this provider offers. This list reflects the variety of services available to all patients visiting the practice and is based on 2022 Medicare dataset. In general, the more frequently a provider treats specific conditions or performs particular procedures, the more experienced they become in addressing similar patient needs. The provider has delivered many of the services listed below to Medicare patients. Please note that this list does not include services provided to patients who are not covered by Medicare.

Ct scan head or brain without contrast

A CT scan of the head or brain without contrast is a non-invasive imaging procedure. It uses X-rays to create detailed pictures of your brain, skull, and other structures inside your head. It helps to detect conditions like strokes, tumors, or injuries. No dye (contrast) is used in this test.

This service was performed 1,366 times for 1,225 patients

Ct scan head or brain without contrast

A CT scan of the head or brain without contrast is a non-invasive imaging procedure. It uses X-rays to create detailed pictures of your brain, skull, and other structures inside your head. It helps to detect conditions like strokes, tumors, or injuries. No dye (contrast) is used in this test.

This service was performed 13 times for 13 patients

Ct scan of blood vessels of head with contrast

A CT scan of the head's blood vessels with contrast is a diagnostic procedure. A special dye (contrast) is injected into your body to make the blood vessels visible on the scan. This helps identify issues like blockages or abnormalities in your head's blood vessels.

This service was performed 132 times for 130 patients

Ct scan of blood vessels of neck with contrast

A CT scan of the neck's blood vessels with contrast is a diagnostic procedure. It uses X-rays and a special dye to create detailed images of your neck's blood vessels. This helps doctors detect issues such as blockages or abnormalities.

This service was performed 145 times for 143 patients

Ct scan of face without contrast

A CT scan of the face without contrast is a non-invasive imaging procedure. It uses X-rays to create detailed pictures of your face, including bones, soft tissues, and blood vessels. It's often used to diagnose diseases, injuries, or abnormalities. No contrast dye is used in this procedure.

This service was performed 61 times for 61 patients

Ct scan of lower spine with contrast

A CT scan of the lower spine with contrast is a non-invasive imaging test that uses X-ray technology and a contrast dye to create detailed pictures of your lower spine. It helps in diagnosing conditions like herniated discs, fractures, or tumors.

This service was performed 20 times for 20 patients

Ct scan of lower spine without contrast

A CT scan of the lower spine without contrast is a non-invasive imaging test. It uses X-rays to create detailed images of your lower back area, helping to detect conditions like fractures, infections, or tumors. It's painless and generally quick.

This service was performed 75 times for 75 patients

Ct scan of middle spine with contrast

A CT scan of the middle spine with contrast is a detailed imaging test. A special dye is used to highlight areas in your spine, providing clearer pictures. It helps doctors diagnose issues such as injuries, infections, or diseases in that area.

This service was performed 17 times for 17 patients

Ct scan of middle spine without contrast

A CT scan of the middle spine without contrast is a non-invasive imaging test. It uses X-rays to create detailed pictures of your mid-spine area. This scan helps doctors identify issues like fractures, tumors, or infections. No dye is used in this procedure.

This service was performed 35 times for 34 patients

Ct scan of soft tissue of neck with contrast

A CT scan of the neck with contrast is a non-invasive imaging procedure. A special dye is administered to highlight the soft tissues in your neck, making them easier to see. This helps detect issues like infections, tumors, or other abnormalities.

This service was performed 17 times for 17 patients

Ct scan of upper spine without contrast

A CT scan of the upper spine without contrast is a non-invasive imaging test that uses X-rays to capture detailed images of your neck and upper back. It helps in identifying issues like fractures, tumors, or infections. No dye (contrast) is used in this scan.

This service was performed 352 times for 340 patients

Injection, gadobutrol, 0.1 ml

Gadobutrol is a contrast agent used during MRI scans to help provide clearer images. It's injected into your vein before the scan. This helps doctors to see certain areas more clearly for better diagnosis. It's generally safe with few side effects.

This service was performed 3,840 times for 48 patients

Mri scan of blood vessels of head without contrast

An MRI scan of the head's blood vessels without contrast is a non-invasive imaging procedure. It uses a magnetic field and radio waves to create detailed images of the blood vessels in your head. This helps doctors diagnose conditions such as stroke, aneurysm, or other vascular disorders.

This service was performed 53 times for 52 patients

Mri scan of blood vessels of neck with contrast

An MRI scan of the neck with contrast is a non-invasive imaging test. It uses a magnetic field and radio waves to create detailed pictures of your blood vessels in the neck. A contrast dye may be injected to make these images clearer. This helps identify any abnormalities.

This service was performed 14 times for 14 patients

Mri scan of blood vessels of neck without contrast

An MRI scan of the neck's blood vessels without contrast is a non-invasive procedure that uses magnetic fields to create detailed images of your neck's blood vessels. It helps identify any abnormalities or blockages, aiding in accurate diagnosis and treatment planning.

This service was performed 12 times for 12 patients

Mri scan of brain before and after contrast

An MRI scan of the brain, both before and after contrast, helps visualize different brain structures. Initially, images are taken without a contrast agent. Then, a safe dye is injected which helps highlight certain areas, providing clearer, more detailed images.

This service was performed 74 times for 73 patients

Mri scan of brain before and after contrast

An MRI scan of the brain, both before and after contrast, helps visualize different brain structures. Initially, images are taken without a contrast agent. Then, a safe dye is injected which helps highlight certain areas, providing clearer, more detailed images.

This service was performed 45 times for 45 patients

Mri scan of brain without contrast

An MRI scan of the brain without contrast is a non-invasive imaging test. It uses a magnetic field and radio waves to create detailed images of your brain. It helps in detecting abnormalities like tumors, stroke, inflammation, or infection.

This service was performed 258 times for 251 patients

Mri scan of brain without contrast

An MRI scan of the brain without contrast is a non-invasive imaging test. It uses a magnetic field and radio waves to create detailed images of your brain. It helps in detecting abnormalities like tumors, stroke, inflammation, or infection.

This service was performed 34 times for 34 patients

Mri scan of lower spinal canal before and after contrast

An MRI scan of the lower spinal canal with contrast is a non-invasive imaging procedure. It uses magnetic fields to generate detailed images of your lower spine. A contrast agent is injected to enhance these images, helping doctors see issues more clearly.

This service was performed 22 times for 22 patients

Mri scan of lower spinal canal without contrast

An MRI scan of the lower spinal canal without contrast is a non-invasive imaging test. It uses a magnetic field and radio waves to produce detailed images of your lower spine. This helps identify issues like disc problems, tumors, or nerve conditions. No dye is used.

This service was performed 44 times for 44 patients

Mri scan of lower spinal canal without contrast

An MRI scan of the lower spinal canal without contrast is a non-invasive imaging test. It uses a magnetic field and radio waves to produce detailed images of your lower spine. This helps identify issues like disc problems, tumors, or nerve conditions. No dye is used.

This service was performed 72 times for 72 patients

Mri scan of middle spinal canal before and after contrast

An MRI scan of the middle spinal canal with contrast is a non-invasive imaging test. It uses a magnetic field and radio waves to create detailed images of your spine, both before and after a contrast dye is injected. The dye helps to highlight certain structures, providing a clearer picture for diagnosis.

This service was performed 18 times for 17 patients

Mri scan of middle spinal canal without contrast

An MRI scan of the middle spinal canal without contrast is a non-invasive imaging test. It uses magnetic fields and radio waves to create detailed images of your spine. This helps doctors identify any abnormalities or issues in your spinal canal. No dye is used in this procedure.

This service was performed 22 times for 22 patients

Mri scan of upper spinal canal without contrast

An MRI scan of the upper spinal canal without contrast is a non-invasive imaging test. It uses a magnetic field and radio waves to create detailed images of your upper spine. This helps doctors identify issues such as injuries, infections or diseases. No dye is used.

This service was performed 22 times for 22 patients

Mri scan of upper spinal canal without contrast

An MRI scan of the upper spinal canal without contrast is a non-invasive imaging test. It uses a magnetic field and radio waves to create detailed images of your upper spine. This helps doctors identify issues such as injuries, infections or diseases. No dye is used.

This service was performed 31 times for 31 patients

Ultrasound of both sides of head and neck blood flow

An ultrasound of the head and neck blood flow is a safe, non-invasive procedure that uses sound waves to create images of blood vessels. It helps detect abnormalities like blockages or clots, ensuring optimal blood flow.

This service was performed 41 times for 41 patients

X-ray of chest, 1 view

A chest X-ray, 1 view, is a quick, painless test that produces images of the structures within your chest, such as your heart, lungs, and blood vessels. It helps in diagnosing conditions like pneumonia, heart problems, or lung cancer. You'll stand in front of a machine that emits X-rays, which pass through your body to create the image.

This service was performed 75 times for 74 patients

X-ray of chest, 2 views

A chest X-ray, 2 views, is a quick, painless test that creates pictures of the structures inside your chest, such as your heart, lungs, and blood vessels. Two different angles are used to get a comprehensive view. This helps in diagnosing conditions like pneumonia, heart problems, or lung cancer.

This service was performed 23 times for 23 patients

X-ray of lower and sacral spine, 2-3 views

An X-ray of the lower and sacral spine involves capturing images of your lower back area, including the tailbone. This procedure helps in identifying problems like fractures, infections, or deformities. 2-3 different angle views provide a comprehensive picture.

This service was performed 19 times for 19 patients

X-ray of lower and sacral spine, 2-3 views

An X-ray of the lower and sacral spine involves capturing images of your lower back area, including the tailbone. This procedure helps in identifying problems like fractures, infections, or deformities. 2-3 different angle views provide a comprehensive picture.

This service was performed 21 times for 20 patients

Overall MIPS Quality Performance

The provider participated in CMS Quality Payment Program under the Merit-based Incentive Payment System (MIPS) and has an overall final score of 82.85, based on four performance areas: quality, improvement activities, promoting interoperability, and cost. The purpose of this information is to help people with Medicare make informed decisions and incentivize doctors and clinicians to maximize performance.

The Merit-based Incentive Payment System (MIPS) is a way providers could use to participate in CMS Quality Payment Program (QPP). The MIPS program affects clinician reimbursement for Part B covered professional services and also rewards them for improving the quality of patient care and outcomes.

  • Final Score: 82.85 out of 100

    The MIPS program evaluates providers across multiple categories with a specific weight for each category resulting a in a MIPS final score that ranges from 0 to 100 points. The MIPS Final Score determines whether providers receive a negative, neutral or positive MIPS payment adjustment.

  • Quality Score: 75.47

    The Quality category assesses providers performance on clinical practices and patient outcomes under the traditional MIPS program. The quality measures help identify the quality of healthcare processes, outcomes, and patient experiences. The Quality measure category compromises 40% providers final MPIS scores.

    There are six collection types for MIPS quality measures: Electronic Clinical Quality Measures (eCQMs), MIPS Clinical Quality Measures (CQMs), Qualified Clinical Data Registry (QCDR) Measures, Medicare Part B claims measures, CMS Web Interface measures and The Consumer Assessment of Healthcare Providers and Systems (CAHPS) for MIPS Survey.

  • Promoting Interoperability Score: 100

    The Interoperability category measures the providers ability to use technology to exchange and make use of healthcare information in a way that is less burdensome and improves outcomes. The Interoperability measure category compromises 25% providers final MPIS scores.

    The MIPS Interoperability measure focuses on the use of certified electronic health record technology (CEHRT) to improve patient access health information, the exchange of information between clinicians and pharmacies and the systematic collection, analysis, and interpretation of healthcare data.

  • Improvement Activities Score: 40

    The Improvement Activities performance category evaluates the providers participation in clinical activities that support the improvement of clinical practice, care delivery, and outcomes. Providers have the option to choose 2 to 4 activities from an inventory of over 100 improvement activities. Providers typically choose the activities that best fit their needs. The improvement activities measure category compromises 15% providers final MPIS scores.

    The Improvement measures aim to better patient engagement, patient safety and other areas of patient care. The Improvement Activities category compromises 15% of providers final MPIS scores.

  • Cost Score: 61.95

    The Cost performance category asses the amount and types of services provided and how clinicians coordinate care and seek improvement of health outcomes by ensuring patients receive the appropriate services.

    Although providers don't determine the price of healthcare services they are important in delivering high-quality care at a reasonable cost. The Cost measures category compromises 20% of providers final MPIS scores.

  • Cost Score: 61.95

    The Cost performance category asses the amount and types of services provided and how clinicians coordinate care and seek improvement of health outcomes by ensuring patients receive the appropriate services.

    Although providers don't determine the price of healthcare services they are important in delivering high-quality care at a reasonable cost. The Cost measures category compromises 20% of providers final MPIS scores.

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NPI Validation Check Digit Calculation


The following table explains the step by step NPI number validation process using the ISO standard Luhn algorithm.

Start with the original NPI number, the last digit is the check digit and is not used in the calculation.
1639393762
Step 1: Double the value of the alternate digits, beginning with the rightmost digit.
2669696712
Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24.
2 + 6 + 6 + 9 + 6 + 9 + 6 + 7 + 1 + 2 + 24 = 78
Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit.
80 - 78 = 22

The NPI number 1639393762 is valid because the calculated check digit 2 using the Luhn validation algorithm matches the last digit of the original NPI number.

Other Providers at the Same Location


The following 20 providers are registered at the same or nearby location.

NPI Name / Type Taxonomy Address
1891788527DR. PRAVENE A NATH M.D.
Individual
Emergency Medicine300 PASTEUR DR H3200, M/C 5230
PALO ALTO, CA 94305
(650) 721-6408
1659351369DR. DIANA G MC GREGOR MBBS
Individual
Anesthesiology300 PASTEUR DR
STANFORD, CA 94305
(650) 723-6411
1952374936DR. LISA MAI LEE MD
Individual
Obstetrics & Gynecology300 PASTEUR DR
STANFORD, CA 94305
(650) 723-4000
1346215100 JING WANG CHIANG MD
Individual
Obstetrics & Gynecology300 PASTEUR DR
STANFORD, CA 94305
(650) 723-4000
1487617064DR. KEVIN LEE LETZ DNP, NP
Individual
Nurse Practitioner300 PASTEUR DR SUMC - PEDS PHYSICIAN BILLING MC:5530
PALO ALTO, CA 94305
(650) 498-7391
1558328005DR. RHETT W. ATKINSON M.D.
Individual
Anesthesiology300 PASTEUR DR
STANFORD, CA 94305
(650) 725-6102
1538126099DR. MICHAEL WARREN CHAMPEAU M.D.
Individual
Anesthesiology300 PASTEUR DR
STANFORD, CA 94305
(650) 725-6102
1609834720DR. TERRI HOMER M.D.
Individual
Anesthesiology300 PASTEUR DR
STANFORD, CA 94305
(650) 725-6102
1710945837DR. EDWARD R. BAER M.D.
Individual
Anesthesiology300 PASTEUR DR
STANFORD, CA 94305
(650) 725-6102
1265490387DR. WILLIAM R. BOHMAN M.D.
Individual
Anesthesiology300 PASTEUR DR
STANFORD, CA 94305
(650) 725-6102
1821056904DR. RICHARD JOHN NOVAK M.D.
Individual
Anesthesiology300 PASTEUR DR
STANFORD, CA 94305
(650) 725-6102
1619935707DR. LISA DIANNE SAUNDERS M.D.
Individual
Anesthesiology300 PASTEUR DR
STANFORD, CA 94305
(650) 725-6102
1285683292STANFORD HOSPITAL AND CLINIC
Organization
Anesthesiology300 PASTEUR DR
STANFORD, CA 94305
(650) 498-7103
1932158318STANFORD HOSPITAL AND CLINICS
Organization
Internal Medicine (Endocrinology, Diabetes & Metabolism)300 PASTEUR DR
STANFORD, CA 94305
(650) 498-7103
1538118930STANFORD HOSPITAL AND CLINCS
Organization
Psychiatry & Neurology (Psychiatry)300 PASTEUR DR
STANFORD, CA 94305
(650) 498-7103
1356390751STANFORD HOSPITAL AND CLINICS
Organization
Internal Medicine (Pulmonary Disease)300 PASTEUR DR
STANFORD, CA 94305
(650) 498-7103
1932158334 KRISTIN CLARE JENSEN MD
Individual
Pathology (Anatomic Pathology)300 PASTEUR DR
STANFORD, CA 94305
(650) 498-5710
1932159373STANFORD HOSPITAL AND CLINICS
Organization
Ophthalmology300 PASTEUR DR
STANFORD, CA 94305
(650) 498-7103
1780634121STANFORD HOSPITAL AND CLINICS
Organization
Internal Medicine (Cardiovascular Disease)300 PASTEUR DR
STANFORD, CA 94305
(650) 498-7103
1598715930STANFORD HOSPITAL AND CLINIC
Organization
Dermatology300 PASTEUR DR
STANFORD, CA 94305
(650) 498-7103

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1639393762, enumerated in the NPI registry as an "individual" on April 12, 2007

The provider is located at 300 Pasteur Dr Room S047 Stanford, Ca 94305 and the phone number is (650) 723-7426

The provider's speciality is Radiology with taxonomy code 2085N0700X with a focus in Neuroradiology

The provider has more than 24 years of experience. He graduated from University Of California, San Diego School Of Medicine in 2002.

Yes, as of June 20, 2025 the provider is registered in PECOS and is eligible to order health care services or supplies for Medicare patients. If you are a beneficiary the provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.

The provider has an overall high rating in the following quality measures: uses technology to exchange and make use of healthcare information.

The most common procedures or services performed by this practitioner are: Ct scan head or brain without contrast, Ct scan head or brain without contrast, Ct scan of blood vessels of head with contrast, Ct scan of blood vessels of neck with contrast, Ct scan of face without contrast, Ct scan of lower spine with contrast, Ct scan of lower spine without contrast, Ct scan of middle spine with contrast, Ct scan of middle spine without contrast, Ct scan of soft tissue of neck with contrast, Ct scan of upper spine without contrast, Injection, gadobutrol, 0.1 ml, Mri scan of blood vessels of head without contrast, Mri scan of blood vessels of neck with contrast, Mri scan of blood vessels of neck without contrast, Mri scan of brain before and after contrast, Mri scan of brain before and after contrast, Mri scan of brain without contrast, Mri scan of brain without contrast, Mri scan of lower spinal canal before and after contrast, Mri scan of lower spinal canal without contrast, Mri scan of lower spinal canal without contrast, Mri scan of middle spinal canal before and after contrast, Mri scan of middle spinal canal without contrast, Mri scan of upper spinal canal without contrast, Mri scan of upper spinal canal without contrast, Ultrasound of both sides of head and neck blood flow, X-ray of chest, 1 view, X-ray of chest, 2 views, X-ray of lower and sacral spine, 2-3 views and X-ray of lower and sacral spine, 2-3 views.

This NPI record was last updated on April 12, 2007. To officially update your NPI information contact the National Plan and Provider Enumeration System (NPPES) at 1-800-465-3203 (NPI Toll-Free) or by email at [email protected].
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