Andrew S. Diamond, MD, PHD
Internal Medicine Physician · San Francisco, CA
Andrew S. Diamond, MD, PHD is an internal medicine physician with a practice address in San Francisco, California, and NPI 1154347235, issued on Jul 14, 2006. Check the license (California A88519, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Andrew S. Diamond
- Credential
- MD, PHD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A88519 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2 Embarcadero Ctr Lbby Level, San Francisco, CA 94111
- Phone
- (888) 663-6331
- Enumerated
- Jul 14, 2006
- Record last updated
- Mar 17, 2025
- Fax
- (415) 252-7176
- Medicare enrollment
- Enrolled (PECOS I20060411000505); accepts Medicare assignment
- Medical or professional school
- University Of Colorado School Of Medicine, Denver, 2003
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 2 Embarcadero Ctr Lbby Level
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Susan AdamNurse Practitioner1033530811
- Julie Ahlrich, FNP-BCFamily Nurse Practitioner1780802629
- Ann Ala, NPFamily Nurse Practitioner1083948012
- Jennifer Alexander, FNPFamily Nurse Practitioner1205179249
- Sameerah Ali, FNP-BCNurse Practitioner1558531566
- Amanda Anderson, P.A.Physician Assistant1104292267
Verify Andrew S. Diamond in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A88519Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average internal medicine physician in 2024
296 Medicare Part D claims for 51 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.
Most prescribed
- Rosuvastatin Calcium42 claims
- Losartan Potassium22 claims
- Allopurinol14 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
- One Medical Group IncSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Andrew S. Diamond among 17,696 internal medicine physician records in California
Andrew S. Diamond, MD, PHD is one of 17,696 internal medicine physician records with a practice address in California. 79% 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 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2003 · median 2004 among the 11,065 with a school on file
- Record last updated2025 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,318 internal medicine physician records list a practice address in San Francisco
They are 1,318 of the 38,143 NPPES records with a practice address in San Francisco, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in San Francisco → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Leena Badhwar, M.D.San Francisco, CA 941111265466874
- Greg Burrell, M.D.San Francisco, CA 941111699090530
- Wayne Chung, MDSan Francisco, CA 941111669404653
- Frank Dumont, MDSan Francisco, CA 941111629063136
- Mark Marin, MDSan Francisco, CA 941111144375668
- Susan Mayo, M.D.San Francisco, CA 941111386696185
- Neetu Nebhwani, MDSan Francisco, CA 941111942457908
- Andres Nieto, M.D.San Francisco, CA 941111740342492
Common questions
What is Andrew S. Diamond, MD, PHD's NPI number?
Andrew S. Diamond, MD, PHD's National Provider Identifier (NPI) is 1154347235, issued on Jul 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Andrew S. Diamond, MD, PHD located?
The NPPES record lists a practice address at 2 Embarcadero Ctr Lbby Level, San Francisco, CA, 94111. Phone: (888) 663-6331. Providers update this record themselves, so call before visiting.
How can I verify Andrew S. Diamond, MD, PHD's license?
NPPES lists California license number A88519, 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 Andrew S. Diamond, MD, PHD prescribe under Medicare Part D?
In 2024, Andrew S. Diamond, MD, PHD had 296 Medicare Part D claims for 51 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.