Joseph Martin, M.D.
NPI 1801862438 · Rheumatology Physician · San Diego, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joseph Martin, M.D. is a Rheumatology Physician provider in San Diego, CA (NPI 1801862438).
Provider details
- NPI number
- 1801862438
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A063488 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
20 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 27 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 397 | 167 |
| Methotrexate Sodiumbrand: Methotrexate | 344 | 131 |
| Hydroxychloroquine Sulfate | 258 | 102 |
| Adalimumab-Attobrand: Amjevita(cf) Autoinjector | 157 | 44 |
| Allopurinol | 132 | 46 |
| Secukinumabbrand: Cosentyx Sensoready (2 Pens) | 121 | 14 |
| Leflunomide | 89 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$142 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-02-24
- Last updated
- 2021-12-01
Frequently asked questions
- What is Joseph Martin's NPI number?
- Joseph Martin's National Provider Identifier (NPI) is 1801862438, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joseph Martin's specialty?
- Joseph Martin is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Joseph Martin located?
- Joseph Martin's practice location on file with NPPES is Naval Medical Ctr, San Diego, CA 92134-3202.
- What is Joseph Martin's phone number?
- The practice phone number listed in the NPPES registry for Joseph Martin is (619) 532-7301.
- Does Joseph Martin accept Medicare?
- Joseph Martin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joseph Martin's NPI active?
- Yes — Joseph Martin's NPI (1801862438) is active in the NPPES registry as of the last update on 2021-12-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.