Karen Stout, MD
NPI 1306921127 · Adult Congenital Heart Disease Physician · Seattle, WA
Enrolled with Medicare as Practitioner - Adult Congenital Heart Disease (achd) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Stout, MD is a Adult Congenital Heart Disease Physician provider in Seattle, WA (NPI 1306921127).
Provider details
- NPI number
- 1306921127
- Entity type
- Individual
- Primary specialty
- Adult Congenital Heart Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- MD00038766 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
540 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 183 | $71 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate and Valve Function93325 | 54 | $3 |
| Ultrasound of Heart, Follow-Up93308 | 52 | $26 |
| Heart Muscle Strain Imaging93356 | 48 | $12 |
| Critical Care, First 30-74 Minutes99291 | 44 | $221 |
| Ultrasound of Heart Blood Flow, Valves and Chambers, Follow-Up93321 | 37 | $7 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Lisinopril | 26 |
| Metoprolol Succinate | 22 |
| Sacubitril/Valsartanbrand: Entresto | 19 |
| Potassium Chloride | 17 |
| Carvedilol | 15 |
| Apixabanbrand: Eliquis | 14 |
| Furosemide | 14 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-27
- Last updated
- 2020-10-13
- Certified
- 2020-10-13
Frequently asked questions
- What is Karen Stout's NPI number?
- Karen Stout's National Provider Identifier (NPI) is 1306921127, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Stout's specialty?
- Karen Stout is listed in the NPPES registry with a primary specialty of Adult Congenital Heart Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Karen Stout located?
- Karen Stout's practice location on file with NPPES is University of Washington Medical Ctr, Seattle, WA 98195-6043.
- What is Karen Stout's phone number?
- The practice phone number listed in the NPPES registry for Karen Stout is (206) 598-4300.
- Does Karen Stout accept Medicare?
- Karen Stout is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Stout's NPI active?
- Yes — Karen Stout's NPI (1306921127) is active in the NPPES registry as of the last update on 2020-10-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.