Stefan Thomas Reynoso, MD
Family Medicine Physician · Claremont, CA
Stefan Thomas Reynoso, MD is a family medicine physician with a practice address in Claremont, California, and NPI 1437207404, issued on Jan 8, 2007. Check the license (California A85033, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Stefan Thomas Reynoso
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A85033 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1601 Monte Vista Ave Ste 190, Claremont, CA 91711
- Phone
- (909) 865-9977
- Enumerated
- Jan 8, 2007
- Record last updated
- Feb 25, 2026
- Fax
- (909) 469-2119
- Medicaid ID
- 1437207404 CA
- Medicare enrollment
- Enrolled (PECOS I20050707000589); may accept Medicare assignment
- Medical or professional school
- Hahneman Medical College Of The Pacific, 2001
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 1601 Monte Vista Ave Ste 190
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Monique Burleigh Sanchez-Castro, M.D.Family Medicine Physician1205247855
- Javier Chang, M.D.Family Medicine Physician1558565366
- Nicholas ChiangPhysician Assistant1245729391
- Darren Favela, PA-CPhysician Assistant1265164644
- Jennifer Guerra, MSPA-CPhysician Assistant1831425875
Verify Stefan Thomas Reynoso in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A85033Check 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 family medicine physician in 2024
546 Medicare Part D claims for 410 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 14 claims were for opioids.
Most prescribed
- Azithromycin69 claims
- Ciprofloxacin Hcl54 claims
- Cephalexin48 claims
- Prednisone43 claims
- Amoxicillin-Clavulanate Potass32 claims
- Naproxen31 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
- Premier Family Medicine Associates, IncClaremont, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Stefan Thomas Reynoso among 17,133 family medicine physician records in California
Stefan Thomas Reynoso, 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 2007, is newer than 41% of them.
- NPI issued2007 · 41% of these records are older, 47% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2001 · median 2005 among the 10,652 with a school on file
- Record last updated2026 · 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).
34 family medicine physician records list a practice address in Claremont
They are 34 of the 800 NPPES records with a practice address in Claremont, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Claremont → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Alan Bergen, M.D.Claremont, CA 917111700022118
- Javier Chang, M.D.Claremont, CA 917111558565366
- Jennie Ho, M.D.Claremont, CA 917111013082403
- Lester Holstein, MDClaremont, CA 917111720088792
- Robyn Jacoby, DOClaremont, CA 917111487623575
- Mary Kasem, MDClaremont, CA 917111982639993
- Yen Lai, MDClaremont, CA 917111033110671
- Paul Orr, M.D.Claremont, CA 917111417950221
Common questions
What is Stefan Thomas Reynoso, MD's NPI number?
Stefan Thomas Reynoso, MD's National Provider Identifier (NPI) is 1437207404, issued on Jan 8, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Stefan Thomas Reynoso, MD located?
The NPPES record lists a practice address at 1601 Monte Vista Ave Ste 190, Claremont, CA, 91711. Phone: (909) 865-9977. Providers update this record themselves, so call before visiting.
How can I verify Stefan Thomas Reynoso, MD's license?
NPPES lists California license number A85033, 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 Stefan Thomas Reynoso, MD prescribe under Medicare Part D?
In 2024, Stefan Thomas Reynoso, MD had 546 Medicare Part D claims for 410 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.