Katherine Kowalczyk, D.O.
NPI 1295997633 · Obstetrics & Gynecology Physician · Grand Rapids, MI
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katherine Kowalczyk, D.O. is a Obstetrics & Gynecology Physician provider in Grand Rapids, MI (NPI 1295997633).
Provider details
- NPI number
- 1295997633
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Female
- Sole proprietor
- No
- License
- 5101017587 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
17 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$37 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-06-26
- Last updated
- 2022-12-05
- Certified
- 2022-12-05
Frequently asked questions
- What is Katherine Kowalczyk's NPI number?
- Katherine Kowalczyk's National Provider Identifier (NPI) is 1295997633, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katherine Kowalczyk's specialty?
- Katherine Kowalczyk is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Katherine Kowalczyk located?
- Katherine Kowalczyk's practice location on file with NPPES is 100 Michigan St Ne # Mc027, Grand Rapids, MI 49503-2560.
- What is Katherine Kowalczyk's phone number?
- The practice phone number listed in the NPPES registry for Katherine Kowalczyk is (616) 391-2160.
- Does Katherine Kowalczyk accept Medicare?
- Katherine Kowalczyk is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Katherine Kowalczyk's NPI active?
- Yes — Katherine Kowalczyk's NPI (1295997633) is active in the NPPES registry as of the last update on 2022-12-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.