Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Family Practice

Stefan T. Reynoso, MD

Works at hospitals in Pomona, CA · California

Summary

Dr. Stefan T. Reynoso, MD is a family doctor at 1601 Monte Vista Ave, Suite 100, Claremont, CA 91711. Phone: (909) 630-7893. May accept Medicare assignment. In 2024, Stefan T. Reynoso had 334 Original Medicare patients and 571 services. NPI 1437207404. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Family doctor (Medicare lists Family Practice)
  • Address: 1601 Monte Vista Ave, Suite 100, Claremont, CA 91711 · Directions
  • Phone: (909) 630‑7893
  • Medicare: May accept Medicare assignment
  • Hospital: Pomona Valley Hospital Medical Center
  • Group practice: Premier Family Medicine Associates, Inc
  • Medical school: Hahneman Medical College Of The Pacific · graduated 2001 (25 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Stefan T. Reynoso, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Stefan T. Reynoso accept Medicare assignment?
Medicare's clinician data says Stefan T. Reynoso may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
How many Medicare patients does Stefan T. Reynoso see?
In 2024, CMS data shows 334 Original Medicare patients and 571 services for Stefan T. Reynoso. This counts Original Medicare only and measures volume, not quality.
What is Stefan T. Reynoso's NPI number?
1437207404. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Stefan T. Reynoso, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients334
Services billed to Medicare571
Different services or procedures36
Participating Medicare providerYes
Average age of these patients73

Most frequent services

  1. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)224 services
  2. Urinalysis, manual test (81002)57 services
  3. New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)56 services
  4. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)43 services
  5. Routine electrocardiogram (ecg) using at least 12 leads with tracing (93005)21 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High cholesterol75%
  • High blood pressure73%
  • Arthritis56%
  • Diabetes33%
  • Ischemic heart disease23%
  • Anxiety23%

Hospitals where Stefan T. Reynoso works

Medicare's Facility Affiliation Data lists Stefan T. Reynoso at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Stefan T. Reynoso is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Stefan T. Reynoso as a member of this group (CMS data updated October 2, 2026).

  • Premier Family Medicine Associates, Inc65 clinicians in the group

Specialties

Find other Family Practice doctors in California →

Other family doctors in Claremont

Clinicians with the same Medicare primary specialty in Claremont, CA — not a recommendation.

All family doctors in Claremont →

Other clinicians in Premier Family Medicine Associates, Inc

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolHahneman Medical College Of The Pacific
Graduation year2001 (25 years since medical school)
Gender (as listed)Male
Medicare assignmentMay accept for some services
NPI (National Provider Identifier)1437207404
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians