DR. IRIS C GIBBS MD
NPI 1407994429
Radiology - Radiation Oncology in Palo Alto, CA


Quality Rating: 78.89 out of 100 score

NPI Status: Active since February 02, 2007

Contact Information

875 BLAKE WILBUR DR
MC 5847
PALO ALTO, CA
ZIP 94304
Phone: (650) 723-6171
Fax: (650) 725-8231

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  • Individual
  • Female
  • Years of Experience 31
  • Radiology
  • Radiation Oncology
  • Accepts Medicare Approved Payment
  • PECOS Enrolled

About IRIS GIBBS

This page provides the complete NPI Profile along with additional information for Iris Gibbs, a provider established in Palo Alto, California with a medical specialization in Radiology, focusing in radiation oncology and more than 31 years of experience. She graduated from Stanford University School Of Medicine in 1995. The healthcare provider is registered in the NPI registry with number 1407994429 assigned on February 2007. The practitioner's primary taxonomy code is 2085R0001X with license number A61589 (CA). The provider is registered as an individual and her NPI record was last updated 12 years ago.

NPI
1407994429
Provider Name
DR. IRIS C GIBBS MD
Gender
Female
Entity Type
Individual
Location Address
875 BLAKE WILBUR DR MC 5847 PALO ALTO, CA 94304
Location Phone
(650) 723-6171
Location Fax
(650) 725-8231
Mailing Address
875 BLAKE WILBUR DRIVE ROOM G222A STANFORD, CA 94305
Mailing Phone
(650) 723-6171
Mailing Fax
(650) 725-8231
Medical School Name
STANFORD UNIVERSITY SCHOOL OF MEDICINE
Graduation Year
1995
Is Sole Proprietor?
No
Enumeration Date
02-02-2007
Last Update Date
12-12-2013
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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 Radiation Oncology

Taxonomy Code
2085R0001X
Type
Allopathic & Osteopathic Physicians
License No.
A61589
License State
CA
Taxonomy Description
A radiologist who deals with the therapeutic applications of radiant energy and its modifiers and the study and management of disease, especially malignant tumors.

Secondary Taxonomies

The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.

No. Taxonomy Code Type Classification /
Specialization
License No. (State)
12085R0203XAllopathic & Osteopathic Physicians

Radiology
Therapeutic Radiology

A61589 (CA)

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
H14847MEDICARE UPIN (02)CA 
00A615890MEDICARE ID-TYPE UNSPECIFIED (04)CAMEDICARE
00A615890MEDICAID (05)CA 

Medicare Participation & PECOS Enrollment Status

Iris Gibbs 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.

Iris Gibbs 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: 3173684842

    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: I20081212000723

    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 guidance for insertion of radiation therapy fields

CT guidance for insertion of radiation therapy fields involves using a CT scan to accurately map the area of your body where radiation will be applied. This ensures the radiation targets only the necessary area, minimizing impact to healthy tissues.

This service was performed 52 times for 26 patients

Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy

Stereoscopic x-ray guidance is a technique used in radiation therapy. It involves taking multiple X-ray images from different angles to create a 3D picture of the area to be treated. This helps accurately pinpoint the exact location for radiation delivery, ensuring the therapy is as effective as possible.

This service was performed 41 times for 12 patients

Physician Visit Costs



The typical physician office visit costs for Medicare beneficiaries in this area are: $51.51 for a new patient copayment and $21.64 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 94304 ZIP code area.

New Patients Visit Costs *

The most utilized procedure code for new patients office visits is 99205

  • Average New Patient Price $206.04
  • Minimum New Patient Price $70.37
  • Maximum New Patient Price $206.04
  • Average New Patient Copayment $51.51
  • Minimum New Patient Copayment $17.59
  • Maximum New Patient Copayment $51.51

Established Patients Visit Costs *

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

  • Average Established Patient Price $86.56
  • Minimum Established Patient Price $23.96
  • Maximum Established Patient Price $169.6
  • Average Established Patient Copayment $21.64
  • Minimum Established Patient Copayment $5.99
  • Maximum Established Patient Copayment $42.4

* 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 78.89, 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: 78.89 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: 83.03

    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: 46.6

    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: 46.6

    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.

Reviews for DR. IRIS C GIBBS MD

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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.
1407994429
Step 1: Double the value of the alternate digits, beginning with the rightmost digit.
2407189844
Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24.
2 + 4 + 0 + 7 + 1 + 8 + 9 + 8 + 4 + 4 + 24 = 71
Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit.
80 - 71 = 99

The NPI number 1407994429 is valid because the calculated check digit 9 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
1831127646 KRISTAN JAN WHEELER PA-C
Individual
Physician Assistant (Surgical)875 BLAKE WILBUR DR MAIL CODE 5826
PALO ALTO, CA 94304
(650) 725-7722
1417007469DR. LAWRENCE DAVID RECHT MD
Individual
Psychiatry & Neurology (Neurology)875 BLAKE WILBUR DR RM CC2221
PALO ALTO, CA 94304
(650) 725-8630
1225184245DR. CHARLOTTE D. JACOBS M.D.
Individual
Internal Medicine875 BLAKE WILBUR DR CC2241
PALO ALTO, CA 94304
(650) 725-8738
1689714248DR. JENNIFER C.Y. KAO M.D.
Individual
Specialist875 BLAKE WILBUR DR #2234
PALO ALTO, CA 94304
(650) 723-8462
1780724427DR. DON ROBERT GOFFINET M.D.
Individual
Radiology (Radiation Oncology)875 BLAKE WILBUR DR STANFORD CANCER CENTER ROOM CC-G220A
PALO ALTO, CA 94304
(650) 723-5714
1194869685DR. SEAN PATRICK BOHEN M.D., PH.D.
Individual
Internal Medicine (Medical Oncology)875 BLAKE WILBUR DR
PALO ALTO, CA 94304
(650) 723-7621
1881738003DR. MARK LEE MD, PHD
Individual
Internal Medicine (Medical Oncology)875 BLAKE WILBUR DR
PALO ALTO, CA 94304
(650) 723-7621
1427193846MRS. KATHLEEN DOHERTY SMITH RN, MS, FNP
Individual
Nurse Practitioner (Family)875 BLAKE WILBUR DR RM CC2342
PALO ALTO, CA 94304
(650) 498-6335
1881874519DR. ERIC WILLIAM HUMKE M.D., PH.D.
Individual
Internal Medicine (Medical Oncology)875 BLAKE WILBUR DR STANFORD CANCER CENTER
PALO ALTO, CA 94304
(650) 498-6000
1922389394MS. KELLY L MCCARTY DPHARM
Individual
Pharmacist (Oncology)875 BLAKE WILBUR DR SUITE CC1101
PALO ALTO, CA 94304
(650) 838-0429
1952688301DR. AUDREY ROUX M.D.
Individual
Specialist875 BLAKE WILBUR DR
PALO ALTO, CA 94304
(650) 723-6171
1265764666MRS. HOPE ELIZABETH QAMOOS CNP
Individual
Nurse Practitioner (Women's Health)875 BLAKE WILBUR DR
PALO ALTO, CA 94304
(650) 498-6004
1922288604 ALEXANDER UNGEWICKELL M.D., PH.D.
Individual
Internal Medicine875 BLAKE WILBUR DR STANFORD CANCER CENTER
PALO ALTO, CA 94304
(650) 498-6000
1912034240DR. SUSAN JANE KNOX M.D.,PH.D.
Individual
Radiology (Radiation Oncology)875 BLAKE WILBUR DR DEPT. RADIATION ONCOLOGY - CANCER CENTER
PALO ALTO, CA 94304
(650) 723-6171
1528201209DR. PELIN CINAR M.D.
Individual
Internal Medicine875 BLAKE WILBUR DR MC: 5826
PALO ALTO, CA 94304
(650) 498-6000
1740678481 SHUBHA KAMATH
Individual
Pharmacist875 BLAKE WILBUR DR
PALO ALTO, CA 94304
(650) 838-0429
1780840447 CARRIE MARSHALL LI N.P.
Individual
Nurse Practitioner (Acute Care)875 BLAKE WILBUR DR OFFICE 2321
PALO ALTO, CA 94304
(650) 724-6690
1407172687 MICHAEL GENSHEIMER M.D.
Individual
Radiology (Radiation Oncology)875 BLAKE WILBUR DR MC 5847
PALO ALTO, CA 94304
(650) 723-6171
1083937031MS. MELISSA VIATORI N.P.
Individual
Nurse Practitioner875 BLAKE WILBUR DR
PALO ALTO, CA 94304
(650) 498-6000
1447655014 KSENIYA ALEKSANDROVNA MANDIC FNP
Individual
Nurse Practitioner (Family)875 BLAKE WILBUR DR
PALO ALTO, CA 94304
(650) 498-6000

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1407994429, enumerated in the NPI registry as an "individual" on February 02, 2007

The provider is located at 875 Blake Wilbur Dr Mc 5847 Palo Alto, Ca 94304 and the phone number is (650) 723-6171

The provider's speciality is Radiology with taxonomy code 2085R0001X with a focus in Radiation Oncology

The provider has more than 31 years of experience. She graduated from Stanford University School Of Medicine in 1995.

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: quality clinical practices and patient outcomes and experiences , uses technology to exchange and make use of healthcare information.

Medicare beneficiaries should expect a typical cost of $206.04 with an average copayment of $51.51 for new patient appointments. Established patients should expect a typical charge of $86.56 and an average copayment of 21.64. 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: Ct guidance for insertion of radiation therapy fields and Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy.

This NPI record was last updated on February 02, 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].
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.