Robert J. Margolin, MD
Specialist · San Francisco, CA
Robert J. Margolin, MD is a specialist with a practice address in San Francisco, California, and NPI 1083739130, issued on Mar 20, 2007. Check the license (California G50108, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Robert J. Margolin
- Credential
- MD
- Primary taxonomy
- Specialist 174400000X
- License number
- G50108 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2001 Union St Ste 570, San Francisco, CA 94123
- Phone
- (415) 694-7500
- Enumerated
- Mar 20, 2007
- Record last updated
- May 23, 2024
- Fax
- (415) 694-7503
- Medicaid ID
- 00G501080 CA
- Entity
- Type 1 · individual
8 nearest specialist records → All 5,749 in California → Look up another NPI →
Also registered at 2001 Union St Ste 570
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Steven Fugaro, M.D.Internal Medicine Physician1144291220
Verify Robert J. Margolin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license G50108Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
19% fewer Medicare Part D claims than the average specialist in 2024
1,121 Medicare Part D claims for 70 beneficiaries, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D.
Most prescribed
- Rosuvastatin Calcium80 claims
- Lisinopril55 claims
- Atorvastatin Calcium39 claims
- Ezetimibe37 claims
- Levothyroxine Sodium34 claims
- Escitalopram Oxalate32 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: $176.78
6 payments; by number, the most common kind was food and beverage; the largest payer was Lilly USA, LLC. The 5,844 providers of this specialty with any payment received $4,760.79 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Robert J. Margolin among 5,749 specialist records in California
Robert J. Margolin, MD is one of 5,749 specialist records with a practice address in California. 30% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 40% of them.
- NPI issued2007 · 40% of these records are older, 44% newer
- In a Medicare fileYes · 30% of these records are
- In the CMS Doctors and Clinicians fileNo · 19% of these records are
- Record last updated2024 · 77% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
666 specialist records list a practice address in San Francisco
They are 666 of the 38,143 NPPES records with a practice address in San Francisco, and 5,749 specialist records in California.
All 5,749 in California → Every provider in San Francisco → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Ulrich Berg, M.D.San Francisco, CA 941231760400667
- Irene DiamondSan Francisco, CA 941231730425117
- Roger Freed, M.D.San Francisco, CA 941231154437200
- Marc Goldyne, M.D., PH.D.San Francisco, CA 941231598780900
- David Leof, M.D.San Francisco, CA 941231992066286
- Kevin Stone, MDSan Francisco, CA 941231104991769
- Elizabeth CookSan Francisco, CA 941241447680814
- Laronda FortenberrySan Francisco, CA 941241023540416
Common questions
What is Robert J. Margolin, MD's NPI number?
Robert J. Margolin, MD's National Provider Identifier (NPI) is 1083739130, issued on Mar 20, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Robert J. Margolin, MD located?
The NPPES record lists a practice address at 2001 Union St Ste 570, San Francisco, CA, 94123. Phone: (415) 694-7500. Providers update this record themselves, so call before visiting.
How can I verify Robert J. Margolin, MD's license?
NPPES lists California license number G50108, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Robert J. Margolin, MD prescribe under Medicare Part D?
In 2024, Robert J. Margolin, MD had 1,121 Medicare Part D claims for 70 beneficiaries; the average among specialist prescribers was 1,380. 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.