NPPES file of Aug 9, 2026

Martin Irwin Bronk, MD

Surgery Physician · Menlo Park, CA

Martin Irwin Bronk, MD is a surgery physician with a practice address in Menlo Park, California, and NPI 1083678726, issued on Apr 12, 2006. Check the license (California G42455, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1083678726
Name
Martin Irwin Bronk
Credential
MD
Primary taxonomy
Surgery Physician 208600000X
License number
G42455 CA
Self-reported in NPPES; status is on the state search
Practice location
1300 Crane Street, Menlo Park, CA 94025
Phone
(650) 498-6500
Enumerated
Apr 12, 2006
Record last updated
Apr 28, 2024
Fax
(650) 322-1329
Medicare enrollment
Enrolled (PECOS I20081229000038); accepts Medicare assignment
Medical or professional school
Stanford University School Of Medicine, 1978
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1300 Crane Street

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Mary Chan, MDGastroenterology Physician1790749430
  2. James Cisco, MDPediatrics Physician1306902150
  3. Nancy Cummings, MDAllergy & Immunology Physician1598728917
  4. Ping Fisher, MDInternal Medicine Physician1093029316
  5. Rebecca Goldfader, NPObstetrics & Gynecology Nurse Practitioner1417910852
  6. David Gregg, MDSurgery Physician1891759536

Verify Martin Irwin Bronk in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G42455
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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69% fewer Medicare Part D claims than the average surgery physician in 2024

45 Medicare Part D claims for 33 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D.

  1. Martin Bronk45
  2. Specialty average147

Most prescribed

  1. Gabapentin21 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Bills Medicare through one group practice

  1. University Healthcare AllianceMenlo Park, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Martin Irwin Bronk among 3,118 surgery physician records in California

Martin Irwin Bronk, MD is one of 3,118 surgery physician records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 6% of them.

  • NPI issued2006 · 6% of these records are older, 55% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 61% of these records are
  • Graduated1978 · median 2003 among the 1,901 with a school on file
  • Record last updated2024 · 59% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Surgery Physician providers in California

There are 3,118 surgery physician records in California.

The 8 surgery physician records with the nearest ZIP codes

  1. David Gregg, MDMenlo Park, CA 940251891759536
  2. Sanford Roberts, MDMenlo Park, CA 940251821594631
  3. Karen Whang, MDMenlo Park, CA 940251477668622
  4. Paul Dagum, MDLos Altos Hills, CA 940241386319788
  5. Jocelyn Dunn, MDPortola Valley, CA 940281689684961
  6. Michael Osborne, MDHalf Moon Bay, CA 940191588163729
  7. Bert Johns, MDDaly City, CA 940151053395848
  8. Katharine Kishiyama, MDDaly City, CA 940151760829600

Common questions

What is Martin Irwin Bronk, MD's NPI number?

Martin Irwin Bronk, MD's National Provider Identifier (NPI) is 1083678726, issued on Apr 12, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Martin Irwin Bronk, MD located?

The NPPES record lists a practice address at 1300 Crane Street, Menlo Park, CA, 94025. Phone: (650) 498-6500. Providers update this record themselves, so call before visiting.

How can I verify Martin Irwin Bronk, MD's license?

NPPES lists California license number G42455, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Martin Irwin Bronk, MD prescribe under Medicare Part D?

In 2024, Martin Irwin Bronk, MD had 45 Medicare Part D claims for 33 beneficiaries; the average among surgery physician prescribers was 147. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.