Joshua Rassen
Internal Medicine Physician · San Francisco, CA
Joshua Rassen is an internal medicine physician with a practice address in San Francisco, California, and NPI 1902885510, issued on Jan 11, 2006. Check the license (California G27677, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Joshua Rassen
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G27677 CA
Self-reported in NPPES; status is on the state search - Practice location
- 700 25TH Ave, San Francisco, CA 94121
- Phone
- (415) 751-1446
- Enumerated
- Jan 11, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (415) 752-6312
- Medicare enrollment
- Enrolled (PECOS I20041230000239); may accept Medicare assignment
- Medical or professional school
- Washington University School Of Medicine, 1973
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 700 25TH Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jennifer Lu, N.P.Family Nurse Practitioner1750764940
- Susan Lucas, M.D.Family Medicine Physician1932185659
- Amy Rassen, LCSWMental Health Counselor1376574830
Verify Joshua Rassen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G27677Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average internal medicine physician in 2024
549 Medicare Part D claims for 71 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium45 claims
- Alendronate Sodium25 claims
- Rosuvastatin Calcium24 claims
- Losartan Potassium23 claims
- Amlodipine Besylate21 claims
- Levothyroxine Sodium18 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.
Joshua Rassen among 17,696 internal medicine physician records in California
Joshua Rassen 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
- Graduated1973 · median 2004 among the 11,065 with a school on file
- Record last updated2007 · 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 →
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- Christina Ghaly, MDSan Francisco, CA 941211427081678
- Sei Lee, MDSan Francisco, CA 941211477513349
- Mei-Lai Lucas, MDSan Francisco, CA 941211104806058
- Maxine Papadakis, MDSan Francisco, CA 941211295768422
Common questions
What is Joshua Rassen's NPI number?
Joshua Rassen's National Provider Identifier (NPI) is 1902885510, issued on Jan 11, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Joshua Rassen located?
The NPPES record lists a practice address at 700 25TH Ave, San Francisco, CA, 94121. Phone: (415) 751-1446. Providers update this record themselves, so call before visiting.
How can I verify Joshua Rassen's license?
NPPES lists California license number G27677, 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 Joshua Rassen prescribe under Medicare Part D?
In 2024, Joshua Rassen had 549 Medicare Part D claims for 71 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.