Catherine Koss, M.D.
NPI 1861727950 · Infectious Disease Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Catherine Koss, M.D. is a Infectious Disease Physician provider in San Francisco, CA (NPI 1861727950).
Provider details
- NPI number
- 1861727950
- Entity type
- Individual
- Primary specialty
- Infectious Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A115493 (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
16 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 · 40 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 86 | 13 |
| Dolutegravir Sodiumbrand: Tivicay | 77 | — |
| Emtricitabine/Tenofov Alafenambrand: Descovy | 58 | — |
| Metoprolol Succinate | 46 | — |
| Ibuprofen | 43 | — |
| Gabapentin | 43 | — |
| Bupropion Hclbrand: Bupropion Xl |
Practice location
Mailing address
Additional practice locations (1)
- 995 Potrero Ave.Bldg. 80, Ward 86, Fl. 6San Francisco, CA 94110-3518Phone: (628) 206-2400Fax: (628) 206-7514
Registry dates
- Enumerated
- 2009-10-08
- Last updated
- 2026-05-13
- Certified
- 2026-05-13
Frequently asked questions
- What is Catherine Koss's NPI number?
- Catherine Koss's National Provider Identifier (NPI) is 1861727950, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Catherine Koss's specialty?
- Catherine Koss is listed in the NPPES registry with a primary specialty of Infectious Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Catherine Koss located?
- Catherine Koss's practice location on file with NPPES is Ucsf Department of Medicine, San Francisco, CA 94143-0001.
- What is Catherine Koss's phone number?
- The practice phone number listed in the NPPES registry for Catherine Koss is (415) 476-1528.
- Does Catherine Koss accept Medicare?
- Catherine Koss is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Catherine Koss's NPI active?
- Yes — Catherine Koss's NPI (1861727950) is active in the NPPES registry as of the last update on 2026-05-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.