Jan Diamond, MD
Family Medicine Physician · Richmond, CA
Jan Diamond, MD is a family medicine physician with a practice address in Richmond, California, and NPI 1326116898, issued on Dec 1, 2006. Check the license (California G57275, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jan Diamond
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- G57275 CA
Self-reported in NPPES; status is on the state search - Practice location
- 225 Western Dr, Richmond, CA 94801
- Phone
- (415) 609-5152
- Enumerated
- Dec 1, 2006
- Record last updated
- Oct 28, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20140702002171); accepts Medicare assignment
- Medical or professional school
- University Of California, San Francisco School Of Medicine, 1981
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Verify Jan Diamond in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G57275Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
100% fewer Medicare Part D claims than the average family medicine physician in 2024
15 Medicare Part D claims, against an average of 3,544 among the 117,163 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.
Industry payments in 2024: $13,526.06
16 payments; by number, the most common kind was food and beverage; the largest payer was Gilead Sciences, 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.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Lifelong Medical CareBerkeley, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jan Diamond among 17,133 family medicine physician records in California
Jan Diamond, MD 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
- Graduated1981 · median 2005 among the 10,652 with a school on file
- Record last updated2020 · 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).
27 family medicine physician records list a practice address in Richmond
They are 27 of the 1,696 NPPES records with a practice address in Richmond, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Richmond → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Justin Chin, DORichmond, CA 948011699399006
- Rebecca Citron, MDRichmond, CA 948011730613142
- Earl Clark, MDRichmond, CA 948011104387174
- Mary Gauthier, M.D.Richmond, CA 948011487823936
- Daniel Hans, D.O.Richmond, CA 948011881081065
- Kristina Heller, D.O.Richmond, CA 948011780046987
- Ki Kim, D.O.Richmond, CA 948011548556665
- Gregory Lee, M.D.Richmond, CA 948011649255282
Common questions
What is Jan Diamond, MD's NPI number?
Jan Diamond, MD's National Provider Identifier (NPI) is 1326116898, issued on Dec 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Jan Diamond, MD located?
The NPPES record lists a practice address at 225 Western Dr, Richmond, CA, 94801. Phone: (415) 609-5152. Providers update this record themselves, so call before visiting.
How can I verify Jan Diamond, MD's license?
NPPES lists California license number G57275, 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 Jan Diamond, MD prescribe under Medicare Part D?
In 2024, Jan Diamond, MD had 15 Medicare Part D claims; 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.
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.