Kathy Stepien, MD
NPI 1598959314 · Pediatrics Physician · Bellevue, WA
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kathy Stepien, MD is a Pediatrics Physician provider in Bellevue, WA (NPI 1598959314).
Provider details
- NPI number
- 1598959314
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- MD60721936 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Mailing address
Additional practice locations (1)
- 747 BroadwaySeattle, WA 98122Phone: (206) 215-2700Fax: (206) 215-3101
Registry dates
- Enumerated
- 2007-09-05
- Last updated
- 2021-05-04
- Certified
- 2021-05-04
Frequently asked questions
- What is Kathy Stepien's NPI number?
- Kathy Stepien's National Provider Identifier (NPI) is 1598959314, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kathy Stepien's specialty?
- Kathy Stepien is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Kathy Stepien located?
- Kathy Stepien's practice location on file with NPPES is 11511 Ne 10th St, Bellevue, WA 98004-8578.
- What is Kathy Stepien's phone number?
- The practice phone number listed in the NPPES registry for Kathy Stepien is (425) 502-3000.
- Does Kathy Stepien accept Medicare?
- Kathy Stepien is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kathy Stepien's NPI active?
- Yes — Kathy Stepien's NPI (1598959314) is active in the NPPES registry as of the last update on 2021-05-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.