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Mark Groudine
NPI 1912082710 · Radiation Oncology Physician · Seattle, WA
Mark Groudine is a Radiation Oncology Physician provider in Seattle, WA (NPI 1912082710).
Provider details
- NPI number
- 1912082710
- Entity type
- Individual
- Primary specialty
- Radiation Oncology PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- MD00018005 (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
University of Washington Medical Ctr
1959 Ne Pacific St
Seattle, WA 98195-0001
Phone: (206) 598-4100
Approximate (ZIP-level) locationGet directions
Mailing address
Po Box 50095
Seattle, WA 98145-5095
Registry dates
- Enumerated
- 2006-10-27
- Last updated
- 2013-02-20
Frequently asked questions
- What is Mark Groudine's NPI number?
- Mark Groudine's National Provider Identifier (NPI) is 1912082710, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Groudine's specialty?
- Mark Groudine is listed in the NPPES registry with a primary specialty of Radiation Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Groudine located?
- Mark Groudine's practice location on file with NPPES is University of Washington Medical Ctr, Seattle, WA 98195-0001.
- What is Mark Groudine's phone number?
- The practice phone number listed in the NPPES registry for Mark Groudine is (206) 598-4100.
- Is Mark Groudine's NPI active?
- Yes — Mark Groudine's NPI (1912082710) is active in the NPPES registry as of the last update on 2013-02-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.