IndividualActive
Sean Fennessy, MD
NPI 1720153372 · Internal Medicine Physician · Renton, WA
Sean Fennessy, MD is a Internal Medicine Physician provider in Renton, WA (NPI 1720153372).
Provider details
- NPI number
- 1720153372
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- MD00045507 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(90/100 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
400 S 43rd St
Renton, WA 98055-5714
Phone: (425) 228-3450
Street-level locationGet directions
Mailing address
2505 Nob Hill Pl N
Seattle, WA 98109-2053
Registry dates
- Enumerated
- 2006-11-21
- Last updated
- 2007-07-08
Frequently asked questions
- What is Sean Fennessy's NPI number?
- Sean Fennessy's National Provider Identifier (NPI) is 1720153372, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sean Fennessy's specialty?
- Sean Fennessy is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Sean Fennessy located?
- Sean Fennessy's practice location on file with NPPES is 400 S 43rd St, Renton, WA 98055-5714.
- What is Sean Fennessy's phone number?
- The practice phone number listed in the NPPES registry for Sean Fennessy is (425) 228-3450.
- Is Sean Fennessy's NPI active?
- Yes — Sean Fennessy's NPI (1720153372) 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.