IndividualActive
Delfred Diehl, M.D., FRCSC
NPI 1952468274 · Ophthalmology Physician · Seattle, WA
Delfred Diehl, M.D., FRCSC is a Ophthalmology Physician provider in Seattle, WA (NPI 1952468274).
Provider details
- NPI number
- 1952468274
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., FRCSC
- Sex
- Male
- Sole proprietor
- No
- License
- MD00026231 (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
310 15th Ave E
Group Health Cooperative: Ophthalmology Cnb-5
Seattle, WA 98112-5103
Phone: (206) 326-3131
Fax: (206) 326-2094
Street-level locationGet directions
Mailing address
Po Box 34581
Seattle, WA 98124-1581
Registry dates
- Enumerated
- 2007-01-03
- Last updated
- 2009-06-10
Frequently asked questions
- What is Delfred Diehl's NPI number?
- Delfred Diehl's National Provider Identifier (NPI) is 1952468274, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Delfred Diehl's specialty?
- Delfred Diehl is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Delfred Diehl located?
- Delfred Diehl's practice location on file with NPPES is 310 15th Ave E, Seattle, WA 98112-5103.
- What is Delfred Diehl's phone number?
- The practice phone number listed in the NPPES registry for Delfred Diehl is (206) 326-3131.
- Is Delfred Diehl's NPI active?
- Yes — Delfred Diehl's NPI (1952468274) is active in the NPPES registry as of the last update on 2009-06-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.