Joseph H. Greenberg, MD
Specialist · San Rafael, CA
Joseph H. Greenberg, MD is a specialist with a practice address in San Rafael, California, and NPI 1912085937, issued on Nov 1, 2006. Check the license (California C35289, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Joseph H. Greenberg
- Credential
- MD
- Primary taxonomy
- Specialist 174400000X
- License number
- C35289 CA
Self-reported in NPPES; status is on the state search - Practice location
- 750 Las Gallinas Ave, San Rafael, CA 94903
- Phone
- (415) 472-3930
- Enumerated
- Nov 1, 2006
- Record last updated
- Apr 22, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (415) 472-2102
- Medicaid ID
- 00C352890 CA
- Medicare enrollment
- Enrolled (PECOS I20101005001139); accepts Medicare assignment
- Medical or professional school
- University Of Minnesota Medical School, 1967
- Entity
- Type 1 · individual
8 nearest specialist records → All 5,749 in California → Look up another NPI →
Also registered at 750 Las Gallinas Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Joseph H. Greenberg in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license C35289Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average specialist in 2024
48 Medicare Part D claims, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D.
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
- Joseph H Greenberg Ltd A Medical CorpSan Rafael, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Joseph H. Greenberg among 5,749 specialist records in California
Joseph H. Greenberg, 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 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 60% newer
- In a Medicare fileYes · 30% of these records are
- In the CMS Doctors and Clinicians fileYes · 19% of these records are
- Graduated1967 · median 1989 among the 1,075 with a school on file
- Record last updated2010 · 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).
Specialist providers in California
There are 5,749 specialist records in California.
All 5,749 in California → Every provider in San Rafael → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Molly FarrellSan Rafael, CA 949031063844603
- Kelly MarshallSan Rafael, CA 949031649688128
- Marcella NuttingSan Rafael, CA 949031629401906
- Jaquelin Pearson, MFTSan Rafael, CA 949031689890345
- Yelena PomazanSan Rafael, CA 949031992208136
- Leslie ScottSan Rafael, CA 949031023116290
- Matt Sellers, P.T.San Rafael, CA 949031790802221
- Aparajita Sohoni, MDSan Rafael, CA 949031245475219
Common questions
What is Joseph H. Greenberg, MD's NPI number?
Joseph H. Greenberg, MD's National Provider Identifier (NPI) is 1912085937, issued on Nov 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Joseph H. Greenberg, MD located?
The NPPES record lists a practice address at 750 Las Gallinas Ave, San Rafael, CA, 94903. Phone: (415) 472-3930. Providers update this record themselves, so call before visiting.
How can I verify Joseph H. Greenberg, MD's license?
NPPES lists California license number C35289, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Joseph H. Greenberg, MD prescribe under Medicare Part D?
In 2024, Joseph H. Greenberg, MD had 48 Medicare Part D claims; 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.