Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Duane D. Webb, MD

Individual provider Gastroenterology Physician · NPI 1881637742

Duane D. Webb, MD practises Gastroenterology in Sequim, Washington. Graduated from State University of New York at Stony Brook, School of Medicine in 1974, 52 years ago. Practices with Public Hospital Dist No 1 Skagit, a 321-clinician group, works from 4 locations, accepts Medicare assignment and offers telehealth. Licensed in Montana and Washington.

Years since qualifying
52
Trained at
State University of New York at Stony Brook, School of Medicine
Licensed in
MT, WA
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

840 N 5th Ave Ste 1500
Sequim, WA 98382-3045
Phone: (360) 565-0999
Fax: (360) 582-2841
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (3)

  • 1101 26th St S, Great Falls, MT 59405-5161 — (406) 731-8888
  • 320 Sunnyview Ln, Kalispell, MT 59901-3129 — (406) 752-7441
  • 4545 Cordata Pkwy Ste 1b, Bellingham, WA 98226-7264 — (360) 752-5216

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence MD00046034 (WA)
Gastroenterology Physician Taxonomy 207RG0100X · Licence MED-PHYS-LIC-81016 (MT)

Record details

NPI number1881637742
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 14, 2006
Last updated in NPPESJuly 22, 2025
Certification dateJuly 22, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGASTROENTEROLOGY
Also practisesINTERNAL MEDICINE
Medical schoolSTATE UNIVERSITY OF NEW YORK AT STONY BROOK, SCHOOL OF MEDICINE
Graduated 1974 (52 years in practice)
Group practice Public Hospital Dist No 1 Skagit — 321 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Upper gastrointestinal (GI) endoscopy for acid reflux 20 times · 50th percentile
Colonoscopy 15 times · 44th percentile

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients217
Services billed 300 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Public Hospital Dist No 1 Skagit

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 321 clinicians in the practice; 12 are shown here.

Other providers in Sequim