What is Stefan Wiktor's NPI number?

Stefan Wiktor's National Provider Identifier (NPI) is 1366306482, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Stefan Wiktor's specialty?

Stefan Wiktor is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).

Where is Stefan Wiktor located?

Stefan Wiktor's practice location on file with NPPES is 5506 16th Ave Ne, Seattle, WA 98105-3415.

What is Stefan Wiktor's phone number?

The practice phone number listed in the NPPES registry for Stefan Wiktor is (206) 661-3597.

Is Stefan Wiktor's NPI active?

Yes — Stefan Wiktor's NPI (1366306482) is active in the NPPES registry as of the last update on 2025-12-17.

IndividualActive

Stefan Wiktor

NPI 1366306482 · Internal Medicine Physician · Seattle, WA

Stefan Wiktor is a Internal Medicine Physician provider in Seattle, WA (NPI 1366306482).

Provider details

NPI number: 1366306482
Entity type: Individual
Primary specialty: Internal Medicine PhysicianAllopathic & Osteopathic Physicians
Sex: Male
Sole proprietor: Yes
License: 61394323 (WA)

Specialties & taxonomies

Internal Medicine PhysicianPrimary207R00000XLicense 61394323 (WA)
Allopathic & Osteopathic Physicians

Profile Score

Established profile(53/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
Under 1 yr in registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
1 documented practice location

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.

Practice location

5506 16th Ave Ne

Seattle, WA 98105-3415

Phone: (206) 661-3597

Street-level locationGet directions

More WA providers

Mailing address