Lesley Althouse, MD
NPI 1669402608 · Internal Medicine Physician · Seattle, WA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lesley Althouse, MD is a Internal Medicine Physician provider in Seattle, WA (NPI 1669402608).
Provider details
- NPI number
- 1669402608
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- MD00022976 (WA)
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
- 2006-07-04
- Last updated
- 2011-08-09
Frequently asked questions
- What is Lesley Althouse's NPI number?
- Lesley Althouse's National Provider Identifier (NPI) is 1669402608, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lesley Althouse's specialty?
- Lesley Althouse is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Lesley Althouse located?
- Lesley Althouse's practice location on file with NPPES is 1100 9th Ave, Seattle, WA 98101-2756.
- What is Lesley Althouse's phone number?
- The practice phone number listed in the NPPES registry for Lesley Althouse is (206) 223-6600.
- Does Lesley Althouse accept Medicare?
- Lesley Althouse is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lesley Althouse's NPI active?
- Yes — Lesley Althouse's NPI (1669402608) is active in the NPPES registry as of the last update on 2011-08-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.