NPPES file of Aug 9, 2026

Klaus D. Mergener, M.D.

Gastroenterology Physician · Edmonds, WA

Klaus D. Mergener, M.D. is a gastroenterology physician with a practice address in Edmonds, Washington, and NPI 1578537031, issued on Feb 13, 2006. Check the license (Washington MD00039380, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1578537031
Name
Klaus D. Mergener
Credential
M.D.
Primary taxonomy
Gastroenterology Physician 207RG0100X
License number
MD00039380 WA
Self-reported in NPPES; status is on the state search
Practice location
21600 Highway 99 Ste 260, Edmonds, WA 98026
Phone
(425) 774-2650
Enumerated
Feb 13, 2006
Record last updated
Oct 25, 2024
Fax
(425) 774-2643
Medicaid ID
1013635 WA
Medicare enrollment
Enrolled (PECOS I20210729003775); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 21600 Highway 99 Ste 260

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Crystal Bernstein, M.D.Gastroenterology Physician1326019167
  2. Kimberly Boyce, PA-CPhysician Assistant1447464094
  3. Victoria Gasparyan, ARNPFamily Nurse Practitioner1912268004
  4. Michelle Goodman, ARNPNurse Practitioner1093899478
  5. David Liang, M.D.Gastroenterology Physician1619178027

Verify Klaus D. Mergener in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWashington Medical Commission
    Search for license MD00039380    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Washington license search

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Industry payments in 2024: $151.30

4 payments; by number, the most common kind was food and beverage; the largest payer was Cook Medical LLC. The 13,350 providers of this specialty with any payment received $5,015.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Klaus Mergener$151.30
  2. Specialty average$5,015.95

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 2 group practices

  1. Avera MckennanSioux Falls, SD
  2. Puget Sound Gastroenterology PLLCEverett, WA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Gastroenterology Physician providers in Washington

There are 533 gastroenterology physician records in Washington.

All 533 in Washington → Every provider in Edmonds →

Other gastroenterology physician records in Washington

  1. Abimbola AdikePoulsbo, WA1821357112
  2. Abhishek Agarwal, MDPuyallup, WA1801010053
  3. Gaurav Aggarwal, M.D.Bellevue, WA1902083587
  4. Sanjay Agrawal, M.D.Tacoma, WA1710912894
  5. Ehsaan Akhtar, MDKirkland, WA1710255591
  6. Oviea Akpotaire, MDSeattle, WA1649632936
  7. Steven Alabaster, MDTacoma, WA1801869623
  8. Sankar Alagugurusamy, MDMount Vernon, WA1093970576
  9. Hawwa Alao, MDSeattle, WA1376774752
  10. Nouredin Alebouyeh, M.D.Seattle, WA1144454711

Common questions

What is Klaus D. Mergener, M.D.'s NPI number?

Klaus D. Mergener, M.D.'s National Provider Identifier (NPI) is 1578537031, issued on Feb 13, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Klaus D. Mergener, M.D. located?

The NPPES record lists a practice address at 21600 Highway 99 Ste 260, Edmonds, WA, 98026. Phone: (425) 774-2650. Providers update this record themselves, so call before visiting.

How can I verify Klaus D. Mergener, M.D.'s license?

NPPES lists Washington license number MD00039380, as entered by the provider. Search the Washington Medical Commission at https://wahelms.my.site.com/s/license-search. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.