DR. DUNCAN A RIDDELL (M.D.) – Otolaryngology Physician, NPI 1801993829
Otolaryngology Physician
Main info
Profile Insights
NPPES metrics only — not quality of care.
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Provider Addresses for DR. DUNCAN A RIDDELL (M.D.)
Metropolitan Deli & Cafe, 805, Madison Street, Central Business District, First Hill, Seattle, King County, Washington, 98104, United States
SUITE 901
SEATTLE, WA 981041172
Phone: (206) 264-8100
Fax: (206) 264-8689
Type: Mailing
Edmonds Medical Plaza, 21616, 76th Avenue West, Perrinville, Edmonds, Snohomish County, Washington, 98026, United States
SUITE 112
EDMONDS, WA 980267512
Phone: (425) 775-6651
Fax: (425) 670-6718
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2007-12-11
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20071211000143 | I | Otolaryngology | WA | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 98104)
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