Dr. Iris C. Gibbs, MD

  • Stanford, CA
  • Radiation oncologist
NPI1407994429PAC ID3173684842
Medicare services, 2024
75
Medicare patients, 2024
41
Publications
167
Clinical trials
6
MIPS score, 2024
89
Practice address
300 Pasteur Drive, Stanford, CA 94305
Practice phone
Call (650) 723-4000
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Stanford Hospital at 300 Pasteur Drive

Hospital · Stanford, California

See all 4 affiliations

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Dr. Iris C. Gibbs is a radiation oncologist in Stanford, California

Dr. Gibbs practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University.

Dr. Gibbs' NPI, 1407994429, was assigned on February 2, 2007. Dr. Gibbs graduated from Stanford University School Of Medicine in 1995. Dr. Gibbs holds California license A61589.

NPI and contact details
Medicare PAC ID
3173684842
NPI enumeration date
February 2, 2007
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(650) 723-4000
Professional email
Get email
Personal email
Get email
Mobile number
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Sex
Female
Estimated age
57
Medical school graduation
1995

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Iris C. Gibbs practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California

Dr. Gibbs' primary practice is Stanford Hospital at 300 Pasteur Drive, at 300 Pasteur Drive, Stanford, CA 94305 in Santa Clara County. The practice phone is (650) 723-4000.

Source: Dmand AI Affiliation Data

Dr. Iris C. Gibbs is affiliated with 3 sites of care and 1 medical group

Dr. Gibbs' primary practice is Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University. The medical group on file is Stanford Health Care. Dmand AI also links Dr. Gibbs to 1 more hospital and 1 group practice or clinic, each named with a free account. Dr. Gibbs' employer is on file too: a hospital.

See all 4 affiliations for Dr. Gibbs

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Iris C. Gibbs' practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gibbs practices, 3 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Stanford Hospital at 300 Pasteur DriveAvailable with a free account
+2 more affiliated sitesAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Iris C. Gibbs is one of 685 radiation oncologists in California

Radiation oncology is Dr. Gibbs' primary specialty in the NPI Registry, under taxonomy code 2085R0001X. Dr. Gibbs is board certified in radiation oncology by the American Board of Radiology. Dr. Gibbs is licensed in California.

Specialties and state licenses

  • Radiation oncology, CaliforniaPrimaryLicense A61589 · 1997 to 2026 · taxonomy 2085R0001X

Clinical focus

Dmand AI lists brain tumor radiation among the conditions Dr. Gibbs treats.

Radiation oncologists near Dr. Gibbs

Counts of radiation oncologists with a Dmand AI profile, by place and practice. Each opens the list.

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Iris C. Gibbs billed Medicare for 75 services in 2024

CMS data shows 75 Medicare services from Dr. Gibbs across 2 procedure codes in 2024, for 41 Medicare patients. Medicare paid $2,823 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 202475
Medicare patients41
Paid by Medicare$2,823
Procedure codes2

Dr. Gibbs' Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Imaging
2023: 502024: 4118%
Other services
2023: 442024: 3423%

Dr. Gibbs compared with the California median for radiation oncologists, 2024

  • Dr. Gibbs
  • California median
Medicare services
75vs 1,44495% below
Medicare patients
41vs 16475% below

Medians across 633 radiation oncologists in California with Dmand AI profiles that report each measure.

Dr. Gibbs' most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Iris C. Gibbs treated 41 Medicare patients in 2024, average age 69

CMS counts 41 Medicare patients who saw Dr. Gibbs in 2024. The largest group is 65 to 74, with 17 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 34% are also on Medicaid. Their average risk score is 2.69, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Gibbs' median patient age at 57, with 52% women.

Medicare patients, 202441
Average age69
Average risk score2.69
Also on Medicaid34%

Dr. Gibbs' Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Dr. Gibbs' Medicare patients by sex, 2024

  • Women2151%
  • Men2049%

Chronic conditions among Dr. Gibbs' Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Cancer51%
  4. Arthritis41%
  5. Diabetes37%
  6. Chronic kidney disease34%
  7. Depression29%
  8. Mood disorders29%

Share of Medicare patients with each condition. A patient can have several.

Dr. Gibbs' patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 57

Patient panel by sex, all payers

  • Women52%
  • Men47%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Iris C. Gibbs scored 89 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 89 out of 100 for Dr. Gibbs for performance year 2024, reported as part of a group. Dr. Gibbs accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Gibbs as offering telehealth.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Dr. Gibbs' MIPS scores, performance year 2024

  • 89of 100Final score
  • 87.1of 100Quality
  • 100of 100Promoting Interoperability
  • 40of 100Improvement Activities
  • 70of 100Cost

Each score is out of 100. The final score weighs the categories CMS scored for this clinician.

Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026

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Dr. Iris C. Gibbs has 167 publications on record

Dmand AI links 167 papers to Dr. Gibbs, published from 2001 to 2025. 2020 was the busiest year, with 12. The most frequent topics are Radiosurgery, Brain Neoplasms and Spinal Neoplasms. Dr. Gibbs has published most often in Int J Radiat Oncol Biol Phys. Dr. Gibbs' most frequent co-authors are Scott Gerard Soltys, MD, Steven Daniel Chang, MD and John R. Adler, MD.

Papers167
Years published2001 to 2025

Dr. Gibbs' papers by year, 2016 to 2025

Topics Dr. Gibbs writes about most

  • Radiosurgery
  • Brain Neoplasms
  • Spinal Neoplasms
  • Magnetic Resonance Imaging
  • Radiotherapy Dosage
  • Radiation Injuries
  • Surgery, Computer-Assisted
  • Tomography, X-Ray Computed

Dr. Gibbs' most frequent co-authors

Recent publications by Dr. Gibbs

See all 167 publications and co-authors

See who Dr. Gibbs researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Gibbs works with, so you can find a warm path to the right radiation oncologists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Iris C. Gibbs has worked on 6 clinical trials

Dmand AI links Dr. Gibbs to 6 clinical trials, 2 of them phase 1 studies. Conditions studied include Brain Neoplasms, Neoplasm Metastasis and Glioblastoma. Stanford University sponsors the most, 5.

Clinical trials with Dr. Gibbs by phase

  1. 2Phase 1: 2 trials
  2. 2Phase 1/2: 2 trials
  3. NonePhase 2: no trials
  4. NonePhase 3: no trials
  5. NonePhase 4: no trials

Conditions in Dr. Gibbs' trials

  • Brain Neoplasms
  • Neoplasm Metastasis
  • Glioblastoma
  • Neurologic Manifestations
  • Sarcoma

Investigators on the most trials with Dr. Gibbs

Recent clinical trials with Dr. Gibbs

See all 6 clinical trials and co-investigators

Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)

Dr. Iris C. Gibbs received $16,773 in industry payments from 2019 to 2022

CMS Open Payments shows 31 general payments to Dr. Gibbs from 4 drug and device companies from 2019 to 2022. Travel and lodging make up the largest share, 53% of the total. Accuray Incorporated paid the most, $16,537.

General payments to Dr. Gibbs by program year, 2019 to 2022

General payments to Dr. Gibbs by kind, 2019 to 2022

$16.8Kin total
  • Travel and lodging$8,82953%
  • Honoraria$7,50045%
  • Food and beverage$4443%

Companies that paid Dr. Gibbs the most, 2019 to 2022

Share is of all general payments to this clinician.

See all payments to Dr. Gibbs

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Iris C. Gibbs has 2 awards and honors on record

Dmand AI lists 2 awards for Dr. Gibbs, most recently Regional Top Doctor in 2014.

Awards and honors for Dr. Gibbs

  1. 2014
    • Regional Top Doctor
  2. 2013
    • CMS Stage 1 EHR

Source: Dmand AI Professional Profile Data

Dr. Iris C. Gibbs graduated from Stanford University School Of Medicine

Dr. Gibbs graduated from Stanford University School Of Medicine in 1995.

  1. Medical schoolStanford University School Of Medicine
  2. Board certified in radiation oncologyAmerican Board of Radiology

Source: Dmand AI Professional Profile Data

Dr. Iris C. Gibbs accepts plans from 5 insurance carriers

Dr. Gibbs is in network with 5 carriers, including Aetna, Elevance and United Healthcare. EPO plans come from the most carriers, 2. Check the plan with the practice before a visit.

  • Aetna
  • Elevance
  • United Healthcare
  • Blue Cross and Blue Shield of Kansas City
  • NV State Medicaid

Plan types Dr. Gibbs accepts, by number of carriers

  1. EPO2
  2. HMO2
  3. Medicare2
  4. POS2
  5. PPO2
  6. Medicaid1

Source: Dmand AI Insurance Network Data

Sources for Dr. Iris C. Gibbs's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Clinical trials and co-investigatorsDmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Awards and committee rolesDmand AI Professional Profile Data
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Iris C. Gibbs

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Dr. Iris C. Gibbs' NPI number?

Dr. Iris C. Gibbs' NPI number is 1407994429. It was assigned on February 2, 2007, and it is active in the NPI Registry.

What kind of doctor is Dr. Iris C. Gibbs?

Dr. Iris C. Gibbs is a radiation oncologist in Stanford, California. The primary specialty in the NPI Registry is Radiation Oncology Physician (taxonomy code 2085R0001X).

Where does Dr. Iris C. Gibbs practice?

Dr. Gibbs practices at 300 Pasteur Drive, Stanford, CA 94305. Dr. Gibbs' primary practice is Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University. Dmand AI also links Dr. Gibbs to 1 hospital and 1 group practice or clinic.

What is Dr. Iris C. Gibbs' office phone number?

The practice phone on file for Dr. Gibbs is (650) 723-4000.

What is Dr. Iris C. Gibbs' medical license number?

Dr. Gibbs holds California license A61589.

Which hospitals is Dr. Iris C. Gibbs affiliated with?

Dr. Gibbs practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California. Dmand AI links Dr. Gibbs to 1 more hospital.

What medical group is Dr. Iris C. Gibbs part of?

Dr. Gibbs is linked to Stanford Health Care.

Does Dr. Iris C. Gibbs accept Medicare?

Yes. CMS data shows Dr. Gibbs billed Medicare for 75 services in 2024, and Dr. Gibbs accepts Medicare assignment.

Does Dr. Iris C. Gibbs offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Dr. Gibbs as offering telehealth services.

What is Dr. Iris C. Gibbs' MIPS score?

Dr. Gibbs' MIPS final score for performance year 2024 is 89 out of 100, reported as part of a group.

Show 9 more questionsShow fewer questions

How many Medicare patients does Dr. Iris C. Gibbs see?

CMS counts 41 Medicare patients who saw Dr. Gibbs in 2024, with an average age of 69.

Is Dr. Iris C. Gibbs board certified?

Yes. Dr. Gibbs is board certified in radiation oncology by the American Board of Radiology.

What services does Dr. Iris C. Gibbs bill to Medicare?

In 2024, Dr. Gibbs' most billed Medicare services were radiation oncology (77334) and medicare service (G6002).

Where did Dr. Iris C. Gibbs go to medical school?

Dr. Gibbs graduated from Stanford University School Of Medicine in 1995.

Has Dr. Iris C. Gibbs received payments from drug or device companies?

CMS Open Payments shows $16,773 in general payments to Dr. Gibbs from 4 companies from 2019 to 2022. The largest total came from Accuray Incorporated.

How long has Dr. Iris C. Gibbs been practicing?

Dr. Gibbs graduated from medical school in 1995, 31 years ago.

Does Dr. Iris C. Gibbs do research?

Dmand AI links 167 publications to Dr. Gibbs, published from 2001 to 2025. Dr. Gibbs has worked on 6 clinical trials.

Who does Dr. Iris C. Gibbs publish with?

Dr. Gibbs' most frequent co-authors are Scott Gerard Soltys, MD (91 shared papers), Steven Daniel Chang, MD (84 shared papers) and John R. Adler, MD (68 shared papers).

What insurance does Dr. Iris C. Gibbs accept?

Dr. Gibbs is in network with 5 carriers, including Aetna, Elevance and United Healthcare. EPO plans come from the most carriers, 2. Check the plan with the practice before a visit.

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