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Internal Medicine

Sebastian B. Arcila, MD

Works at hospitals in Riverside, CA · California

Summary

Dr. Sebastian B. Arcila, MD is an internal medicine doctor at 10800 Magnolia Ave, Riverside, CA 92505. Phone: (951) 353-2000. Accepts Medicare assignment. NPI 1588956007. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026.

  • Specialty: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 10800 Magnolia Ave, Riverside, CA 92505 · Directions (2 more locations)
  • Phone: (951) 353‑2000
  • Medicare: Accepts Medicare assignment
  • Hospital: Kaiser Foundation Hospital, Riverside
  • Group practice: Southern California Permanente Medical Group
  • Medical school: University Of California, Geffen School Of Medicine · graduated 2011 (15 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Sebastian B. Arcila, 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 Sebastian B. Arcila accept Medicare assignment?
Yes. Medicare's clinician data says Sebastian B. Arcila 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 Sebastian B. Arcila's NPI number?
1588956007. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Sebastian B. Arcila works

Medicare's Facility Affiliation Data lists Sebastian B. Arcila 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 Sebastian B. Arcila is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Sebastian B. Arcila 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 Riverside

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

All internal medicine doctors in Riverside →

Other clinicians in Southern California Permanente Medical Group

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

Clinician information

CredentialMD
Medical schoolUniversity Of California, Geffen School Of Medicine
Graduation year2011 (15 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1588956007
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. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  5. Medicare Care Compare — official Medicare tool to look up clinicians