Mary Margaretten, MD
NPI 1588802706 · Rheumatology Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Margaretten, MD is a Rheumatology Physician provider in San Francisco, CA (NPI 1588802706).
Provider details
- NPI number
- 1588802706
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- A90714 (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 tenure38% of score
17 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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 · 21 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Adalimumabbrand: Humira Pen | 87 | 12 |
| Methotrexate/Pfbrand: Rasuvo | 81 | 12 |
| Methotrexate Sodiumbrand: Methotrexate | 74 | 20 |
| Prednisone | 73 | 19 |
| Hydroxychloroquine Sulfate | 67 | 17 |
| Abataceptbrand: Orencia Clickject | 35 | — |
| Adalimumab |
Practice location
Mailing address
Additional practice locations (1)
- 1001 Potrero AvenueBldg. 90, Fl. 2San Francisco, CA 94110-3518Phone: (628) 206-4777Fax: (628) 206-7503
Registry dates
- Enumerated
- 2009-01-26
- Last updated
- 2026-04-28
- Certified
- 2026-04-28
Frequently asked questions
- What is Mary Margaretten's NPI number?
- Mary Margaretten's National Provider Identifier (NPI) is 1588802706, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Margaretten's specialty?
- Mary Margaretten is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Margaretten located?
- Mary Margaretten's practice location on file with NPPES is 3333 California St, San Francisco, CA 94143-0001.
- What is Mary Margaretten's phone number?
- The practice phone number listed in the NPPES registry for Mary Margaretten is (415) 476-2965.
- Does Mary Margaretten accept Medicare?
- Mary Margaretten is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Margaretten's NPI active?
- Yes — Mary Margaretten's NPI (1588802706) is active in the NPPES registry as of the last update on 2026-04-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.