Alyssa Ren, MD
Family Medicine Physician · San Francisco, CA
Alyssa Ren, MD is a family medicine physician with a practice address in San Francisco, California, and NPI 1811331903, issued on Apr 19, 2013. Check the license (California 141628, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Alyssa Ren
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 141628 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4 Embarcadero Ctr Lbby Level5th, San Francisco, CA 94111
- Phone
- (415) 529-4566
- Enumerated
- Apr 19, 2013
- Record last updated
- Mar 14, 2025
- Fax
- (415) 252-7176
- Medicare enrollment
- Enrolled (PECOS I20160725002508); accepts Medicare assignment
- Medical or professional school
- Morehouse School Of Medicine, 2012
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Verify Alyssa Ren in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 141628Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average family medicine physician in 2024
220 Medicare Part D claims for 49 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium29 claims
- Levothyroxine Sodium16 claims
- Alendronate Sodium12 claims
- Rosuvastatin Calcium12 claims
- Losartan Potassium11 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).
Alyssa Ren among 17,133 family medicine physician records in California
Alyssa Ren, 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 2013, is newer than 68% of them.
- NPI issued2013 · 68% of these records are older, 29% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2012 · median 2005 among the 10,652 with a school on file
- Record last updated2025 · 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).
Family Medicine Physician providers in California
There are 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in San Francisco → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Hollis Burggraf, MDSan Francisco, CA 941111962484329
- Melissa Coomes, M.D.San Francisco, CA 941111811987605
- Jennette Cross, MDSan Francisco, CA 941111942349964
- Paula Dungog-Ocaya, MDSan Francisco, CA 941111962589317
- Susan Fedinec, DOSan Francisco, CA 941111770549958
- Hayden Lewis, MDSan Francisco, CA 941111083783633
- Gwendolyn Okuzumi, MDSan Francisco, CA 941111720164239
- Michael Rosenfield, D.O.San Francisco, CA 941111720087141
Common questions
What is Alyssa Ren, MD's NPI number?
Alyssa Ren, MD's National Provider Identifier (NPI) is 1811331903, issued on Apr 19, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Alyssa Ren, MD located?
The NPPES record lists a practice address at 4 Embarcadero Ctr Lbby Level5th, San Francisco, CA, 94111. Phone: (415) 529-4566. Providers update this record themselves, so call before visiting.
How can I verify Alyssa Ren, MD's license?
NPPES lists California license number 141628, 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 Alyssa Ren, MD prescribe under Medicare Part D?
In 2024, Alyssa Ren, MD had 220 Medicare Part D claims for 49 beneficiaries; 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.