Thomas Marsella, M.D.
NPI 1982716460 · Occupational Medicine Physician · San Francisco, CA
Thomas Marsella, M.D. is a Occupational Medicine Physician provider in San Francisco, CA (NPI 1982716460).
Provider details
- NPI number
- 1982716460
- Entity type
- Individual
- Primary specialty
- Occupational Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G060434 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-31
- Last updated
- 2007-07-08
Frequently asked questions
- What is Thomas Marsella's NPI number?
- Thomas Marsella's National Provider Identifier (NPI) is 1982716460, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas Marsella's specialty?
- Thomas Marsella is listed in the NPPES registry with a primary specialty of Occupational Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Thomas Marsella located?
- Thomas Marsella's practice location on file with NPPES is 45 Castro St, San Francisco, CA 94114-1010.
- What is Thomas Marsella's phone number?
- The practice phone number listed in the NPPES registry for Thomas Marsella is (415) 600-5252.
- Is Thomas Marsella's NPI active?
- Yes — Thomas Marsella's NPI (1982716460) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.