Jim Leng, MD
NPI 1548880982 · Radiation Oncology Physician · Seattle, WA
Enrolled with Medicare as Practitioner - Radiation Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jim Leng, MD is a Radiation Oncology Physician provider in Seattle, WA (NPI 1548880982).
Provider details
- NPI number
- 1548880982
- Entity type
- Individual
- Primary specialty
- Radiation Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD.61659086 (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
6 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 1570 N 115th StSeattle, WA 98133-8401Phone: (206) 306-2800
Registry dates
- Enumerated
- 2020-04-24
- Last updated
- 2025-09-04
- Certified
- 2025-09-04
Frequently asked questions
- What is Jim Leng's NPI number?
- Jim Leng's National Provider Identifier (NPI) is 1548880982, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jim Leng's specialty?
- Jim Leng is listed in the NPPES registry with a primary specialty of Radiation Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Jim Leng located?
- Jim Leng's practice location on file with NPPES is 1354 Aloha St, Seattle, WA 98109-4404.
- What is Jim Leng's phone number?
- The practice phone number listed in the NPPES registry for Jim Leng is (206) 606-7318.
- Does Jim Leng accept Medicare?
- Jim Leng is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jim Leng's NPI active?
- Yes — Jim Leng's NPI (1548880982) is active in the NPPES registry as of the last update on 2025-09-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.