NPPES file of Aug 9, 2026

Gary Benn Birnbaum, M.D.

Family Medicine Physician · San Francisco, CA

Gary Benn Birnbaum, M.D. is a family medicine physician with a practice address in San Francisco, California, and NPI 1972685972, issued on Oct 19, 2006. Check the license (California G36641, 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
1972685972
Name
Gary Benn Birnbaum
Credential
M.D.
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
G36641 CA
Self-reported in NPPES; status is on the state search
Practice location
1580 Valencia St Ste 201, San Francisco, CA 94110
Phone
(415) 550-4710
Enumerated
Oct 19, 2006
Record last updated
Jul 21, 2022
Fax
(415) 550-6784
Medicaid ID
GR0081800 CA
Medicare enrollment
Enrolled (PECOS I20081218000762); accepts Medicare assignment
Medical or professional school
New York University School Of Medicine, 1976
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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8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →

Also registered at 1580 Valencia St Ste 201

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

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  3. Barbara Bishop, M.D.Family Medicine Physician1144302126
  4. Sophia Dinh, PA-CPhysician Assistant1164104535
  5. Miriam Garcia, M.D.Family Medicine Physician1992887897
  6. Amanda Massad, MDFamily Medicine Physician1467940825

Verify Gary Benn Birnbaum in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G36641    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

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72% fewer Medicare Part D claims than the average family medicine physician in 2024

977 Medicare Part D claims for 79 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 44 claims were for opioids.

  1. Gary Birnbaum977
  2. Specialty average3,544

Most prescribed

  1. Eliquis55 claims
  2. Myrbetriq42 claims
  3. Hydrocodone-Acetaminophen38 claims
  4. Gabapentin33 claims
  5. Atorvastatin Calcium28 claims
  6. Rosuvastatin Calcium28 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.

Industry payments in 2024: $27.73

1 payment: food and beverage; the largest payer was Janssen Biotech, Inc. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Gary Birnbaum$27.73
  2. Specialty average$902.55

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Gary Benn Birnbaum among 17,133 family medicine physician records in California

Gary Benn Birnbaum, M.D. is one of 17,133 family medicine physician records with a practice address in California. 81% 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, 59% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 62% of these records are
  • Graduated1976 · median 2005 among the 10,652 with a school on file
  • Record last updated2022 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Family Medicine Physician providers in California

There are 17,133 family medicine physician records in California.

All 17,133 in California → Every provider in San Francisco → Family Medicine Physician nationwide →

The 8 family medicine physician records with the nearest ZIP codes

  1. Joaquin Barahona, M. D.San Francisco, CA 941101205895133
  2. Luis Bonilla, MDSan Francisco, CA 941101629019708
  3. Christopher Bositis, MDSan Francisco, CA 941101427054493
  4. Romilda Foresti-Lorente, MDSan Francisco, CA 941101164455374
  5. Steven Lawton, MDSan Francisco, CA 941101366486748
  6. Todd May, MDSan Francisco, CA 941101679528335
  7. Pooja Mittal, DOSan Francisco, CA 941101215916200
  8. David Nidorf, MDSan Francisco, CA 941101336186121

Common questions

What is Gary Benn Birnbaum, M.D.'s NPI number?

Gary Benn Birnbaum, M.D.'s National Provider Identifier (NPI) is 1972685972, issued on Oct 19, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Gary Benn Birnbaum, M.D. located?

The NPPES record lists a practice address at 1580 Valencia St Ste 201, San Francisco, CA, 94110. Phone: (415) 550-4710. Providers update this record themselves, so call before visiting.

How can I verify Gary Benn Birnbaum, M.D.'s license?

NPPES lists California license number G36641, 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 Gary Benn Birnbaum, M.D. prescribe under Medicare Part D?

In 2024, Gary Benn Birnbaum, M.D. had 977 Medicare Part D claims for 79 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.