DR. BRIAN J CLAY M.D.
NPI 1831124635
Hospitalist in San Diego, CA
About Dr. Brian J Clay M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. BRIAN J CLAY M.D. (NPI 1831124635) is an individual hospitalist provider in San Diego, California, licensed in California (A83799) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS and is a graduate of University Of California, San Diego School Of Medicine (2000).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 3
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Brian J Clay M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Brian Clay reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
San Diego, CA 92103
- Reassigned Medicare billing, California enrollment
- 1,051 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 3
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92103 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAN DIEGO, CA 92103
SAN DIEGO, CA 92103
SAN DIEGO, CA 92103
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Brian Clay's NPI number?
The NPI number for Brian Clay is 1831124635. It was assigned to this individual provider in the NPPES registry on July 11, 2006.
Where is Brian Clay located?
Brian Clay practices at 200 W Arbor Dr Mail Code 8485, San Diego, CA 92103. The listed phone number is (619) 471-9194.
What is Brian Clay's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is Brian Clay enrolled in Medicare?
Yes. Brian Clay is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Brian Clay's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Brian Clay reassigns Medicare benefits to Regents Of The University Of California (San Diego, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Brian Clay's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Brian Clay was last updated on September 6, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Brian J Clay, M.D. · NPI 1831124635
Hospitalist physician in San Diego, California. Individual provider, active in the CMS NPPES registry since July 11, 2006.
## Identity
- **NPI:** 1831124635 (Entity type: Individual)
- **Enumerated:** July 11, 2006
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** A83799 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 200 W ARBOR DR, MAIL CODE 8485, San Diego, CA 92103-9001
- **Phone:** (619) 471-9194 · **Fax:** (619) 543-8255
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Regents Of The University Of California (NPI 1487772380, San Diego, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California, San Diego School Of Medicine, class of 2000
## Record status
- **NPPES last updated:** September 6, 2017
- **Other identifiers:** Medicare ID-Type Unspecified WA83799A (CA); Medicare UPIN H91007 (CA); Medicaid 00A837990 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1831124635) · Data from the CMS NPPES public registry.