Sangmin Ahn, M.D.
Physical Medicine & Rehabilitation Physician · Union City, CA
Sangmin Ahn, M.D. is a physical medicine & rehabilitation physician with a practice address in Union City, California, and NPI 1073892477, issued on Aug 16, 2011. Check the license (California A141480, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Sangmin Ahn
- Credential
- M.D.
- Primary taxonomy
- Physical Medicine & Rehabilitation Physician 208100000X
- License number
- A141480 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3555 Whipple RD, Union City, CA 94587
- Phone
- (510) 675-3414
- Enumerated
- Aug 16, 2011
- Record last updated
- Dec 16, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (510) 675-3204
- Medicare enrollment
- Enrolled (PECOS I20161004001593); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physical medicine & rehabilitation physician records → All 1,549 in California → Look up another NPI →
Also registered at 3555 Whipple RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Farah Alsaati, MDGeriatric Medicine (Family Medicine) Physician1083147755
- Alejandra AndradeMarriage & Family Therapist1013649227
- Jacqueline Arroyo, JACQUELINE ARROYOPsychologist1275689531
- Kandalena Ary, LCSWClinical Social Worker1720158314
Verify Sangmin Ahn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A141480Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% fewer Medicare Part D claims than the average physical medicine & rehabilitation physician in 2024
108 Medicare Part D claims for 65 beneficiaries, against an average of 727 among the 7,448 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Gabapentin44 claims
- Meloxicam18 claims
- Tizanidine Hcl12 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
- Permanente Medical Group IncUnion City, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Sangmin Ahn among 1,549 physical medicine & rehabilitation physician records in California
Sangmin Ahn, M.D. is one of 1,549 physical medicine & rehabilitation physician records with a practice address in California. 59% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 50% of them.
- NPI issued2011 · 50% of these records are older, 47% newer
- In a Medicare fileYes · 59% of these records are
- In the CMS Doctors and Clinicians fileYes · 51% of these records are
- Graduated2002 · median 2008 among the 786 with a school on file
- Record last updated2021 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208100000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Physical Medicine & Rehabilitation Physician providers in California
There are 1,549 physical medicine & rehabilitation physician records in California.
All 1,549 in California → Every provider in Union City → Physical Medicine & Rehabilitation Physician nationwide →
The 8 physical medicine & rehabilitation physician records with the nearest ZIP codes
- Vidya Hemmad, PTUnion City, CA 945871629249289
- Caroline Koo, MDUnion City, CA 945871093917254
- Binh Luu, M.D.Union City, CA 945871295904092
- Laura Nahm, MDUnion City, CA 945871275824757
- Jordan Shilling, PT, DPTUnion City, CA 945871962930313
- Kevin Zheng, MDUnion City, CA 945871649731951
- Brian ZieglerUnion City, CA 945871285181008
- Garth Greenwell, D.O.Pleasanton, CA 945881578676789
Common questions
What is Sangmin Ahn, M.D.'s NPI number?
Sangmin Ahn, M.D.'s National Provider Identifier (NPI) is 1073892477, issued on Aug 16, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Sangmin Ahn, M.D. located?
The NPPES record lists a practice address at 3555 Whipple RD, Union City, CA, 94587. Phone: (510) 675-3414. Providers update this record themselves, so call before visiting.
How can I verify Sangmin Ahn, M.D.'s license?
NPPES lists California license number A141480, 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 Sangmin Ahn, M.D. prescribe under Medicare Part D?
In 2024, Sangmin Ahn, M.D. had 108 Medicare Part D claims for 65 beneficiaries; the average among physical medicine & rehabilitation physician prescribers was 727. 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.