NPPES file of Aug 9, 2026

Karen Kathleen Stout, MD

Adult Congenital Heart Disease Physician · Seattle, WA

Karen Kathleen Stout, MD is an adult congenital heart disease physician with a practice address in Seattle, Washington, and NPI 1306921127, issued on Oct 27, 2006. Check the license (Washington MD00038766, 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
1306921127
Name
Karen Kathleen Stout
Credential
MD
Primary taxonomy
Adult Congenital Heart Disease Physician 207RA0002X
License number
MD00038766 WA
Self-reported in NPPES; status is on the state search
Practice location
University OF Washington Medical Ctr, Seattle, WA 98195
Phone
(206) 598-4300
Enumerated
Oct 27, 2006
Record last updated
Oct 13, 2020 (not updated in 6 years: call before relying on the address or phone)
Medicaid ID
1306921127 WA
Medicare enrollment
Enrolled (PECOS I20040429000114); accepts Medicare assignment
Medical or professional school
University Of Arizona College Of Medicine, 1996
Telehealth
Offers telehealth (CMS)
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 University OF Washington Medical Ctr

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

  1. Jan AgostiInfectious Disease Physician1912082744
  2. Suhail AhmadNephrology Physician1821173659
  3. Moira AitkenPulmonary Disease Physician1558446385
  4. Charles AlpersAnatomic Pathology & Clinical Pathology Physician1922188820
  5. William Altemeier, MDPulmonary Disease Physician1447335278
  6. Frederick AppelbaumMedical Oncology Physician1356426183

Verify Karen Kathleen Stout in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWashington Medical Commission
    Search for license MD00038766
    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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53% fewer Medicare Part D claims than the average adult congenital heart disease physician in 2024

217 Medicare Part D claims for 34 beneficiaries, against an average of 462 among the 117 providers of this specialty who prescribed in Part D.

  1. Karen Stout217
  2. Specialty average462

Most prescribed

  1. Lisinopril26 claims
  2. Metoprolol Succinate22 claims
  3. Entresto19 claims
  4. Potassium Chloride17 claims
  5. Carvedilol15 claims
  6. Eliquis14 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Bills Medicare through 2 group practices

  1. Central Washington Health Services AssociationWenatchee, WA
  2. The Association OF University PhysiciansShoreline, WA

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

Adult Congenital Heart Disease Physician providers in Washington

There are 5 adult congenital heart disease physician records in Washington.

The 4 adult congenital heart disease physician records with the nearest ZIP codes

  1. Yonatan Buber, MDSeattle, WA 981951346584174
  2. Andrew Pistner, M.D.Seattle, WA 981951205194636
  3. Zachary Steinberg, M.D.Seattle, WA 981951609023936
  4. Jill Steiner, MDSeattle, WA 981951992029516

Common questions

What is Karen Kathleen Stout, MD's NPI number?

Karen Kathleen Stout, MD's National Provider Identifier (NPI) is 1306921127, issued on Oct 27, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Karen Kathleen Stout, MD located?

The NPPES record lists a practice address at University OF Washington Medical Ctr, Seattle, WA, 98195. Phone: (206) 598-4300. Providers update this record themselves, so call before visiting.

How can I verify Karen Kathleen Stout, MD's license?

NPPES lists Washington license number MD00038766, 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.

How much does Karen Kathleen Stout, MD prescribe under Medicare Part D?

In 2024, Karen Kathleen Stout, MD had 217 Medicare Part D claims for 34 beneficiaries; the average among adult congenital heart disease physician prescribers was 462. Part D covers Medicare prescriptions only.

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.

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.