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

Family Practice

Joey Asfahan, MD

Sees patients in San Dimas, CA · El Segundo, CA · California

Summary

Dr. Joey Asfahan, MD is a family doctor at 1330 W Covina Blvd, Suite 102, San Dimas, CA 91773. Phone: (909) 592-3323. Accepts Medicare assignment. In 2024, Joey Asfahan had 781 Original Medicare patients and 6,972 services. NPI 1639706211. Source: CMS National Downloadable File, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Family doctor (Medicare lists Family Practice)
  • Address: 1330 W Covina Blvd, Suite 102, San Dimas, CA 91773 · Directions (1 more location)
  • Phone: (909) 592‑3323
  • Medicare: Accepts Medicare assignment
  • Group practice: Geriatric Support Medical Group PC (+1 more)
  • Medical school: graduated 2017 (9 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Joey Asfahan, 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 Joey Asfahan accept Medicare assignment?
Yes. Medicare's clinician data says Joey Asfahan accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Joey Asfahan see?
In 2024, CMS data shows 781 Original Medicare patients and 6,972 services for Joey Asfahan. This counts Original Medicare only and measures volume, not quality.
What is Joey Asfahan's NPI number?
1639706211. 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 Joey Asfahan, 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 patients781
Services billed to Medicare6,972
Different services or procedures33
Participating Medicare providerYes
Average age of these patients83

Most frequent services

  1. Complex chronic care management services for two or more chronic conditions, each additional 60 minutes of clinical staff time directed by health care professional, per calendar month (99489)2,409 services
  2. Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes (99348)1,150 services
  3. Complex chronic care management services for two or more chronic conditions, first 60 minutes of clinical staff time directed by health care professional, per calendar month (99487)1,085 services
  4. Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes (99349)1,001 services
  5. Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more (99308)277 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 blood pressure75%
  • High cholesterol75%
  • Alzheimer's disease or dementia62%
  • Depression60%
  • Arthritis58%
  • Anxiety53%

Practice locations

Addresses where Joey Asfahan is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Joey Asfahan as a member of these groups (CMS data updated October 2, 2026).

  • Geriatric Support Medical Group PC38 clinicians in the group
  • Rosanna Iskander MD Inc.2 clinicians in the group

Specialties

Find other Family Practice doctors in California →

Other family doctors in San Dimas

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

All family doctors in San Dimas →

Other clinicians in Geriatric Support Medical Group PC

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

Clinician information

CredentialMD
Graduation year2017 (9 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1639706211
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. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  2. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians