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Internal Medicine

Zarshid Arbabi, MD

Sees patients in San Dimas, CA · Diamond Bar, CA · California

Summary

Dr. Zarshid Arbabi, MD is an internal medicine doctor at 1255 W Arrow Hwy, San Dimas, CA 91773. Phone: (909) 394-2526. Accepts Medicare assignment. NPI 1366693954. Source: CMS National Downloadable File, updated October 2, 2026.

  • Specialty: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 1255 W Arrow Hwy, San Dimas, CA 91773 · Directions (1 more location)
  • Phone: (909) 394‑2526
  • Medicare: Accepts Medicare assignment
  • Group practice: Southern California Permanente Medical Group
  • Medical school: graduated 1997 (29 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Zarshid Arbabi, 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 Zarshid Arbabi accept Medicare assignment?
Yes. Medicare's clinician data says Zarshid Arbabi 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.
What is Zarshid Arbabi's NPI number?
1366693954. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Practice locations

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

Group practices

Medicare enrollment lists Zarshid Arbabi as a member of this group (CMS data updated October 2, 2026).

  • Southern California Permanente Medical Group11,293 clinicians in the group

Specialties

Find other Internal Medicine doctors in California →

Other internal medicine doctors in San Dimas

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

All internal medicine doctors in San Dimas →

Other clinicians in Southern California Permanente Medical Group

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

Clinician information

CredentialMD
Graduation year1997 (29 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1366693954
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. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  3. Medicare Care Compare — official Medicare tool to look up clinicians