Thomas C Gustafson
NPI 1821213612 · General Practice Physician · Seattle, WA
Thomas C Gustafson is a General Practice Physician organization in Seattle, WA (NPI 1821213612).
Provider details
- NPI number
- 1821213612
- Entity type
- Organization
- Primary specialty
- General Practice PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Thomas Gustafson, Physician(206) 782-0500
- License
- AP30007148 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Physician Assistants & Advanced Practice Nursing Providers
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
Other names (DBA / former)
- Doing business as
- Market Street Clinic
Registry dates
- Enumerated
- 2007-04-16
- Last updated
- 2008-07-14
Frequently asked questions
- What is Thomas C Gustafson's NPI number?
- Thomas C Gustafson's National Provider Identifier (NPI) is 1821213612, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Thomas C Gustafson?
- Thomas C Gustafson is classified in the NPPES registry as General Practice Physician (Allopathic & Osteopathic Physicians).
- Where is Thomas C Gustafson located?
- Thomas C Gustafson's practice location on file with NPPES is 1717 Nw Market St, Seattle, WA 98107-5225.
- What is Thomas C Gustafson's phone number?
- The practice phone number listed in the NPPES registry for Thomas C Gustafson is (206) 782-0500.
- Who is the authorized official for Thomas C Gustafson?
- The authorized official listed on Thomas C Gustafson's NPPES record is Thomas Gustafson, Physician. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Thomas C Gustafson's NPI active?
- Yes — Thomas C Gustafson's NPI (1821213612) is active in the NPPES registry as of the last update on 2008-07-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.