Catherine Bartnik, MD, MPH
NPI 1548688773ActiveIndividual· Internal Medicine, Gastroenterology· Grand Rapids, MI
Internal Medicine, Gastroenterology (MD, MPH) in Grand Rapids, Michigan, trained at Michigan State University College of Human Medicine (class of 2014). Their prescriptions cost Medicare Part D more than their services did: $308,654 for 709 claims, against $19,809 paid for services in 2024. Novo Nordisk Inc was the largest of 7 companies reporting payments in 2025, $384.53 in all, mostly food and beverage.
Overview
| NPI | 1548688773 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD, MPH |
| Sole proprietor | No |
| NPI issued | Apr 4, 2014 |
| Last updated in NPPES | Aug 30, 2021 |
| Certified by provider | Aug 30, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 4301503842 | MI |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Gastroenterology (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 109 |
|---|---|
| Services billed | 215 across 29 procedure codes |
| Paid by Medicare | $19,809 |
Part D prescriptions in 2024
| Prescriptions (claims) | 709 · 1,103 30-day fills |
|---|---|
| Patients | 215 |
| Total drug cost | $308,654 |
| Generic share | 82% of claims |
Education and affiliations
| Medical school | Michigan State University College of Human Medicine |
|---|---|
| Graduation year | 2014 |
| Medicare specialty | Gastroenterology |
| Telehealth | Offers telehealth |
Medical group
- Spectrum Health Primary Care PartnersGrand Rapids, MI · 2,294 clinicians
Hospital affiliations
- Corewell Health Gerber HospitalFremont, MI
- Corewell Health Pennock HospitalHastings, MI
- Corewell Health Zeeland HospitalZeeland, MI
- Spectrum HealthGrand Rapids, MI
- Spectrum Health United HospitalGreenville, MI
Industry payments (Open Payments)
- 2025$384.53 · 12 payments from 7 companies
- 2024$246.85 · 9 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $155.68 | 3 |
| Madrigal Pharmaceuticals | $81.69 | 3 |
| Ipsen Biopharmaceuticals, Inc | $49.78 | 2 |
| Braintree Laboratories, Inc. | $37.61 | 1 |
| Regeneron Healthcare Solutions, Inc. | $26.21 | 1 |
What the 2025 payments were for
- Food and Beverage$384.53 · 12 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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