Brian Clay, M.D.
NPI 1831124635 · Hospitalist Physician · San Diego, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Brian Clay, M.D. is a Hospitalist Physician provider in San Diego, CA (NPI 1831124635).
Provider details
- NPI number
- 1831124635
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A83799 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
95 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 48 | $121 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 36 | $80 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 11 | $84 |
Typical Medicare-allowed amounts for these services range $80–$121 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-11
- Last updated
- 2017-09-06
Frequently asked questions
- What is Brian Clay's NPI number?
- Brian Clay's National Provider Identifier (NPI) is 1831124635, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Brian Clay's specialty?
- Brian Clay is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Brian Clay located?
- Brian Clay's practice location on file with NPPES is 200 W Arbor Dr, San Diego, CA 92103-9001.
- What is Brian Clay's phone number?
- The practice phone number listed in the NPPES registry for Brian Clay is (619) 471-9194.
- Does Brian Clay accept Medicare?
- Brian Clay is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Brian Clay's NPI active?
- Yes — Brian Clay's NPI (1831124635) is active in the NPPES registry as of the last update on 2017-09-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.