DR. FANG TAN MD
NPI 1811997646
Ophthalmology in Fremont, CA


Quality Rating: 77.5 out of 100 score

NPI Status: Active since July 22, 2005

Contact Information

1895 MOWRY AVE
SUITE 101
FREMONT, CA
ZIP 94538
Phone: (510) 793-2800
Fax: (510) 793-2882

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  • Individual
  • Female
  • Years of Experience 44
  • Ophthalmology
  • Accepts Medicare Approved Payment
  • PECOS Enrolled
  • Medicare Quality Reporting

About FANG TAN

This page provides the complete NPI Profile along with additional information for Fang Tan, a provider established in Fremont, California with a medical specialization in Ophthalmology and more than 44 years of experience. The healthcare provider is registered in the NPI registry with number 1811997646 assigned on July 2005. The practitioner's primary taxonomy code is 207W00000X with license number A81026 (CA). The provider is registered as an individual and her NPI record was last updated 18 years ago.

NPI
1811997646
Provider Name
DR. FANG TAN MD
Gender
Female
Entity Type
Individual
Location Address
1895 MOWRY AVE SUITE 101 FREMONT, CA 94538
Location Phone
(510) 793-2800
Location Fax
(510) 793-2882
Mailing Address
3232 BRUCE DR FREMONT, CA 94539
Mailing Phone
(510) 793-2800
Mailing Fax
(510) 793-2882
Medical School Name
OTHER
Graduation Year
1982
Is Sole Proprietor?
No
Enumeration Date
07-22-2005
Last Update Date
01-07-2008
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Ophthalmologists like Fang Tan specialize in diagnosing and treating eye conditions. They may perform surgeries to correct vision issues or prevent vision loss due to diseases like glaucoma. Additionally, they can provide eyeglasses, prescribe contact lenses, and offer other vision-related services.

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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

Ophthalmology

Taxonomy Code
207W00000X
Type
Allopathic & Osteopathic Physicians
License No.
A81026
License State
CA
Taxonomy Description
An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses.

Insurance Plans Accepted

According to publicly available information the provider might be accepting the following health plans from these health insurance companies:

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

*Please verify directly with this provider to make sure your insurance plan is currently accepted.

Additional Identifiers

The NPI Enumerator encourages providers to submit additional identifiers with their NPI application although the submission of this information is optional. The additional identifier(s) section includes other numbers or codes currently or formerly used as an identifier for the provider by other public healthcare entities. The identifiers may include UPIN, NSC, OSCAR, DEA, Medicaid State or PIN identification numbers.

Identifier Type / Code Identifier State Identifier Issuer
00A810260MEDICARE PIN (08)CA 
H77651MEDICARE UPIN (02)CA 
00A810260MEDICAID (05)CA 

Medicare Participation & PECOS Enrollment Status

Fang Tan 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.

Fang Tan 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: 941288856

    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: I20040709000714

    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.

Cataract surgery

Cataract surgery is a procedure to remove the lens of your eye when it becomes cloudy, which is called a cataract. A synthetic lens is then inserted to restore clear vision. The operation is typically done on an outpatient basis and is very safe and effective.

This service was performed for 1-10 patients

Established patient complete exam of visual system

An established patient complete exam of the visual system involves a thorough check of your eyes and vision. It assesses eye health, checks for diseases, and measures your ability to see clearly at different distances. It's a routine, non-invasive procedure.

This service was performed 79 times for 79 patients

Established patient office or other outpatient visit, 20-29 minutes

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

This service was performed 326 times for 233 patients

Established patient office or other outpatient visit, 30-39 minutes

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

This service was performed 552 times for 502 patients

Established patient problem focused exam of visual system

This is a routine check-up for existing patients focusing on the visual system. It involves examining your eyes to detect any potential issues or changes in your vision. It's a crucial part of maintaining good eye health.

This service was performed 35 times for 33 patients

Exam of the internal drainage system of eye

This is a procedure where your doctor examines the eye's internal drainage system, essential for maintaining eye pressure. They use specialized tools to check for blockages or damage that might lead to conditions like glaucoma. It's non-invasive and painless.

This service was performed 248 times for 241 patients

Exam of visual field with extended testing

An extended visual field exam is a detailed test to evaluate your peripheral (side) vision. It helps to detect any potential blind spots which may not be noticeable in daily life. These could be caused by eye diseases like glaucoma, or neurological conditions.

This service was performed 131 times for 129 patients

New patient complete exam of visual system

A new patient complete exam of the visual system is a thorough evaluation of your eyes and vision. It checks for any potential issues and assesses overall eye health. It includes tests for visual acuity, eye movement, and light response.

This service was performed 33 times for 33 patients

New patient office or other outpatient visit, 45-59 minutes

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

This service was performed 114 times for 114 patients

Photography of the retina

Photography of the retina, also known as retinal imaging, is a non-invasive procedure that captures images of the back of your eye. This helps doctors identify and monitor conditions like glaucoma, macular degeneration, or diabetic retinopathy. It's painless and quick, often part of a routine eye exam.

This service was performed 613 times for 566 patients

Ultrasound scan of cornea to determine thickness

An ultrasound scan of the cornea is a non-invasive procedure that uses sound waves to measure the thickness of your cornea. This helps in diagnosing certain eye conditions and planning treatments. No discomfort or pain is typically experienced.

This service was performed 17 times for 17 patients

Physician Visit Costs



The typical physician office visit costs for Medicare beneficiaries in this area are: $38.45 for a new patient copayment and $21.22 for an established patient copayment.

The pricing information below displays the copayment minimum, maximum and average amount that patients under Medicare are charged when visiting this provider as a new or established patient. Please keep in mind that these prices are just for reference purposes, and the actual prices charged by the provider might be different.

For patients covered under private health plans the prices below are also useful as healthcare pricing for private insurance is usually established as a function of Medicare prices. Private insurance covered patients should check their individual plans to determine the exact pricing.

The prices below reflect the costs for new and established patients in the 94538 ZIP code area.

New Patients Visit Costs *

The most utilized procedure code for new patients office visits is 99204

  • Average New Patient Price $153.83
  • Minimum New Patient Price $69
  • Maximum New Patient Price $202.35
  • Average New Patient Copayment $38.45
  • Minimum New Patient Copayment $17.25
  • Maximum New Patient Copayment $50.58

Established Patients Visit Costs *

The most utilized procedure code for established patients office visits is 99213

  • Average Established Patient Price $84.91
  • Minimum Established Patient Price $23.44
  • Maximum Established Patient Price $166.46
  • Average Established Patient Copayment $21.22
  • Minimum Established Patient Copayment $5.86
  • Maximum Established Patient Copayment $41.61

* The physician office visit costs information is generated by statistical analysis of similar providers in the same geographical area. The pricing information above IS NOT the amount charged by this provider.

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 77.5, 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 provider also has detailed performance information the following quality measures: .

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: 77.5 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: 50

    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: N/A

    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: N/A

    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.

MIPS Quality Measures

The following performance measures were reported under the Merit-Based Incentive Payment System (MIPS) and Qualified Clinical Data Registry (QCDR) quality measures program.

Quality Measure Performance Number of Patients
e-Prescribing 100% 301
Provide Patients Electronic Access to Their Health Information 99% 673
Support Electronic Referral Loops By Receiving and Reconciling Health Information 100% 294
Support Electronic Referral Loops By Sending Health Information 100% 38

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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.
1811997646
Step 1: Double the value of the alternate digits, beginning with the rightmost digit.
28211891468
Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24.
2 + 8 + 2 + 1 + 1 + 8 + 9 + 1 + 4 + 6 + 8 + 24 = 74
Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit.
80 - 74 = 66

The NPI number 1811997646 is valid because the calculated check digit 6 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
1538140629DR. STEVEN DANA CHAN D.D.S.
Individual
Dentist (Pediatric Dentistry)1895 MOWRY AVE SUITE 121
FREMONT, CA 94538
(510) 791-0971
1508831629DR. CATHERINE M BEHRENS MD
Individual
Obstetrics & Gynecology (Gynecology)1895 MOWRY AVE #103
FREMONT, CA 94538
(510) 792-5990
1750331237DR. HARRY W. CHAN O.D.
Individual
Optometrist1895 MOWRY AVE SUITE # 117
FREMONT, CA 94538
(510) 797-8770
1215948997 RAMINENI V RAO MD
Individual
Surgery1895 MOWRY AVE #118B
FREMONT, CA 94538
(510) 795-7706
1922110220 GRACE FUANG-LING CHEN DDS MSD
Individual
Dentist1895 MOWRY AVE #122
FREMONT, CA 94538
(510) 791-6807
1700980042MR. FREDRICK SAUL WILSON DPM
Individual
Podiatrist1895 MOWRY AVE STE 103
FREMONT, CA 94538
(510) 796-2191
1538268362 WALTER CHOW DMD
Individual
Dentist (General Practice)1895 MOWRY AVE SUITE 102
FREMONT, CA 94538
(510) 795-1661
1497842561CHOICE MEDICAL CLINIC, INC
Organization
Obstetrics & Gynecology (Gynecology)1895 MOWRY AVE SUITE 116
FREMONT, CA 94538
(510) 792-3398
1114008422 JACQUELINE L PITTS CRNA
Individual
Nurse Anesthetist, Certified Registered1895 MOWRY AVE SUITE 116
FREMONT, CA 94538
(510) 792-3398
1639249667 STEPHANIE WANG DMD
Individual
Dentist (General Practice)1895 MOWRY AVE SUITE 102
FREMONT, CA 94538
(510) 795-1661
1811053960DR. ANTONIO VERA DDS
Individual
Dentist (Endodontics)1895 MOWRY AVE SUITE 110
FREMONT, CA 94538
(510) 796-3782
1053466623PREFERRED REHAB PHY THER INC
Organization
Physical Therapist1895 MOWRY AVE STE 118-A
FREMONT, CA 94538
(510) 790-0383
1740306455MS. DHRUTI JAGDISH SHAH R.P.T
Individual
Physical Therapist1895 MOWRY AVE STE. 118-A
FREMONT, CA 94538
(510) 790-0383
1508075540CARL J CARLSON MD
Organization
Internal Medicine (Cardiovascular Disease)1895 MOWRY AVE SUITE #100
FREMONT, CA 94538
(510) 792-2012
1851585020 SUSAN SUI-SANG WONG M.D.
Individual
Family Medicine1895 MOWRY AVE 101
FREMONT, CA 94538
(510) 713-1300
1245419621DR. GUSTAVO A LEMUS DDS
Individual
Dentist (General Practice)1895 MOWRY AVE SUITE 120
FREMONT, CA 94538
(510) 494-8181
1467631820MS. CHARU DAVE R.P.T
Individual
Physical Therapist1895 MOWRY AVE SUITE 118-A
FREMONT, CA 94538
(510) 790-0178
1740456664DR. GERALD WAYNE MENDES JR. D.D.S.
Individual
Dentist (General Practice)1895 MOWRY AVE SUITE 119
FREMONT, CA 94538
(510) 794-8255
1497913271 PREETHI JAGANMOHAN PT
Individual
Physical Therapist1895 MOWRY AVE SUITE 118A
FREMONT, CA 94538
(510) 790-0383
1922324839IN FOCUS PHYSICAL THERAPY INC
Organization
Physical Therapist1895 MOWRY AVE SUITE #118A
FREMONT, CA 94538
(510) 790-0383

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1811997646, enumerated in the NPI registry as an "individual" on July 22, 2005

The provider is located at 1895 Mowry Ave Suite 101 Fremont, Ca 94538 and the phone number is (510) 793-2800

The provider's speciality is Ophthalmology with taxonomy code 207W00000X

The provider has more than 44 years of experience.

The provider might be accepting Accepts: Medicare and Medicaid. Please consult your insurance carrier or call the provider to make sure your health plan is currently accepted.

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 provider obtained a high score in the following performance measures: e-Prescribing, Provide Patients Electronic Access to Their Health Information, Support Electronic Referral Loops By Receiving and Reconciling Health Information , Support Electronic Referral Loops By Sending Health Information. The quality ratings are based on unbiased reviews and reported submissions to Medicare's Quality Payment Program.

Medicare beneficiaries should expect a typical cost of $153.83 with an average copayment of $38.45 for new patient appointments. Established patients should expect a typical charge of $84.91 and an average copayment of 21.22. Please review your insurance plan or contact the provider directly to determine your specific costs.

The most common procedures or services performed by this practitioner are: Cataract surgery, Established patient complete exam of visual system, Established patient office or other outpatient visit, 20-29 minutes, Established patient office or other outpatient visit, 30-39 minutes, Established patient problem focused exam of visual system, Exam of the internal drainage system of eye, Exam of visual field with extended testing, New patient complete exam of visual system, New patient office or other outpatient visit, 45-59 minutes, Photography of the retina and Ultrasound scan of cornea to determine thickness.

This NPI record was last updated on July 22, 2005. 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].
NPI Profile data is regularly updated with the latest NPI registry information, if you would like to update or remove your NPI Profile in this website please contact us.