Katharina Stewart, MD
NPI 1053380345 · Maternal & Fetal Medicine Physician · Madison, WI
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katharina Stewart, MD is a Maternal & Fetal Medicine Physician provider in Madison, WI (NPI 1053380345).
Provider details
- NPI number
- 1053380345
- Entity type
- Individual
- Primary specialty
- Maternal & Fetal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 39824 (WI)
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
20 yrs in NPPES 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
Mailing address
Registry dates
- Enumerated
- 2006-03-17
- Last updated
- 2009-04-07
Frequently asked questions
- What is Katharina Stewart's NPI number?
- Katharina Stewart's National Provider Identifier (NPI) is 1053380345, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katharina Stewart's specialty?
- Katharina Stewart is listed in the NPPES registry with a primary specialty of Maternal & Fetal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Katharina Stewart located?
- Katharina Stewart's practice location on file with NPPES is 202 S Park St, Madison, WI 53715-1507.
- What is Katharina Stewart's phone number?
- The practice phone number listed in the NPPES registry for Katharina Stewart is (608) 417-6667.
- Does Katharina Stewart accept Medicare?
- Katharina Stewart is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Katharina Stewart's NPI active?
- Yes — Katharina Stewart's NPI (1053380345) is active in the NPPES registry as of the last update on 2009-04-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.