Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Klaus D Mergener, MD

Individual provider Gastroenterology Physician · NPI 1578537031

Klaus D Mergener, MD is a Gastroenterology in Edmonds, Washington. Qualified in 1989, 37 years ago. Practices with Avera McKennan, a 962-clinician group and accepts Medicare assignment. Licensed in Washington.

Years since qualifying
37
Licensed in
WA
In the registry since
2006
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

21600 Highway 99 Ste 260
Edmonds, WA 98026-8049
Phone: (425) 774-2650
Fax: (425) 774-2643
Show map & directions

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

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence MD00039380 (WA)

Record details

NPI number1578537031
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 13, 2006
Last updated in NPPESOctober 25, 2024
Certification dateOctober 25, 2024
Mailing address1917 Warren Ave N, Seattle, WA 98109-2551

Medicare enrollment

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

Medicare specialtyGASTROENTEROLOGY
Medical schoolOTHER
Graduated 1989 (37 years in practice)
Group practice Avera McKennan — 962 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations9 on file with Medicare

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