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Marianne Twyman, M.D.
NPI 1184849804 · Family Medicine Physician · Seattle, WA
Marianne Twyman, M.D. is a Family Medicine Physician provider in Seattle, WA (NPI 1184849804).
Provider details
- NPI number
- 1184849804
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- MD00015182 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(89/100 index)
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
2001 E Madison St
Seattle, WA 98122-2959
Phone: (206) 328-7722
Fax: (206) 720-4657
Street-level locationGet directions
Mailing address
2001 E. Madison
Seattle, WA 98122-2959
Registry dates
- Enumerated
- 2007-04-16
- Last updated
- 2023-03-07
Frequently asked questions
- What is Marianne Twyman's NPI number?
- Marianne Twyman's National Provider Identifier (NPI) is 1184849804, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marianne Twyman's specialty?
- Marianne Twyman is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Marianne Twyman located?
- Marianne Twyman's practice location on file with NPPES is 2001 E Madison St, Seattle, WA 98122-2959.
- What is Marianne Twyman's phone number?
- The practice phone number listed in the NPPES registry for Marianne Twyman is (206) 328-7722.
- Is Marianne Twyman's NPI active?
- Yes — Marianne Twyman's NPI (1184849804) is active in the NPPES registry as of the last update on 2023-03-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.