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Internal Medicine

Brian J. Clay, MD

Works at hospitals in San Diego, CA · California

Summary

Brian J. Clay, MD (Internal Medicine) is listed by Medicare at 1 hospital in San Diego, CA. NPI 1831124635. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Brian J. Clay, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Internal MedicinePrimary specialty
YesAccepts Medicare assignment
26Years since medical school (graduated 2000)
University Of California, San Diego School Of MedicineMedical school
MaleGender (as listed)
Regents of the University of CaliforniaGroup practice

Quick answers

Which hospitals does Brian J. Clay work at?
Medicare's official clinician data lists Brian J. Clay at 1 hospital: UC San Diego Health Hillcrest - Hillcrest Med Ctr. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Brian J. Clay see patients?
Medicare's clinician data lists 3 practice locations, including San Diego, CA and La Jolla, CA. Call before your visit to confirm the address.
What is Brian J. Clay's specialty?
Medicare lists Internal Medicine as the primary specialty.
Does Brian J. Clay accept Medicare assignment?
Yes. Medicare's clinician data says Brian J. Clay accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
What is the phone number for Brian J. Clay?
(858) 657-7000, as listed in official Medicare / NPI Registry data.
What is Brian J. Clay's NPI number?
1831124635. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Brian J. Clay works

Medicare's Facility Affiliation Data lists Brian J. Clay at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Brian J. Clay is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Brian J. Clay as a member of this group (CMS data updated 2026-10-02).

  • Regents of the University of California2,089 clinicians in the group

Specialties

Find other Internal Medicine doctors in California →

Other internal medicine doctors in San Diego

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

All internal medicine doctors in San Diego →

Clinician information

CredentialMD
Medical schoolUniversity Of California, San Diego School Of Medicine
Graduation year2000
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1831124635
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 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  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