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Anesthesiology

Brandon K. Abrajan, DO

Works at hospitals in Upland, CA · California

Summary

Dr. Brandon K. Abrajan, DO is an anesthesiologist at 999 San Bernardino Rd, Upland, CA 91786. Phone: (909) 985-2811. Accepts Medicare assignment. NPI 1861141186. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026.

  • Specialty: Anesthesiologist (Medicare lists Anesthesiology)
  • Address: 999 San Bernardino Rd, Upland, CA 91786 · Directions
  • Phone: (909) 985‑2811
  • Medicare: Accepts Medicare assignment
  • Hospital: San Antonio Regional Hospital
  • Group practice: Allied Anesthesia Medical Group Inc
  • Medical school: graduated 2022 (4 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Brandon K. Abrajan, 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 Brandon K. Abrajan accept Medicare assignment?
Yes. Medicare's clinician data says Brandon K. Abrajan 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 Brandon K. Abrajan's NPI number?
1861141186. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Brandon K. Abrajan works

Medicare's Facility Affiliation Data lists Brandon K. Abrajan 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.

  • San Antonio Regional HospitalUpland, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050099

Practice locations

Addresses where Brandon K. Abrajan is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Brandon K. Abrajan as a member of this group (CMS data updated October 2, 2026).

  • Allied Anesthesia Medical Group Inc191 clinicians in the group

Specialties

Find other Anesthesiology doctors in California →

Other anesthesiologists in Upland

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

All anesthesiologists in Upland →

Other clinicians in Allied Anesthesia Medical Group Inc

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

Clinician information

CredentialDO
Graduation year2022 (4 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1861141186
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