Duncan Riddell, M.D.
NPI 1801993829 · Otolaryngology Physician · Edmonds, WA
Enrolled with Medicare as Practitioner - Otolaryngology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Duncan Riddell, M.D. is a Otolaryngology Physician provider in Edmonds, WA (NPI 1801993829).
Provider details
- NPI number
- 1801993829
- Entity type
- Individual
- Primary specialty
- Otolaryngology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- MD00029782 (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
- 2006-09-20
- Last updated
- 2011-10-24
Frequently asked questions
- What is Duncan Riddell's NPI number?
- Duncan Riddell's National Provider Identifier (NPI) is 1801993829, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Duncan Riddell's specialty?
- Duncan Riddell is listed in the NPPES registry with a primary specialty of Otolaryngology Physician (Allopathic & Osteopathic Physicians).
- Where is Duncan Riddell located?
- Duncan Riddell's practice location on file with NPPES is 21616 76th Ave W, Edmonds, WA 98026-7512.
- What is Duncan Riddell's phone number?
- The practice phone number listed in the NPPES registry for Duncan Riddell is (425) 775-6651.
- Does Duncan Riddell accept Medicare?
- Duncan Riddell is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Duncan Riddell's NPI active?
- Yes — Duncan Riddell's NPI (1801993829) is active in the NPPES registry as of the last update on 2011-10-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.