Michael Maitar, MD
NPI 1619019304ActiveIndividual· Internal Medicine, Gastroenterology· Rockford, IL
Internal Medicine, Gastroenterology (MD) with Bellin Memorial Hospital Inc and 4 other groups, practicing in Rockford, Illinois. Their prescriptions cost Medicare Part D more than their services did: $167,232 for 260 claims, against $47,215 paid for services in 2024. Phathom Pharmaceuticals, Inc. was the largest of 6 companies reporting payments in 2025, $881.11 in all, mostly food and beverage. Lists Bellin Memorial Hospital and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1619019304 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Feb 12, 2007 |
| Last updated in NPPES | Oct 28, 2026 |
| Certified by provider | Oct 28, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 036081217 | IL |
| Internal Medicine, Gastroenterology | 207RG0100X | 64928-20 | WI |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Gastroenterology (IL); Practitioner - Gastroenterology (MI); Practitioner - Internal Medicine (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 217 |
|---|---|
| Services billed | 429 across 42 procedure codes |
| Paid by Medicare | $47,215 |
Part D prescriptions in 2024
| Prescriptions (claims) | 260 · 342 30-day fills |
|---|---|
| Patients | 109 |
| Total drug cost | $167,232 |
| Generic share | 75% of claims |
Education and affiliations
| Graduation year | 1986 |
|---|---|
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
Medical groups
- Bellin Memorial Hospital IncGreen Bay, WI · 697 clinicians
- St Vincent Hospital-Hospital Sisters-Third Order of St FrancisGreen Bay, WI · 603 clinicians
- Swedishamerican HospitalBelvidere, IL · 389 clinicians
- Siu Physicians and Surgeons IncSpringfield, IL · 314 clinicians
- Decatur Memorial HospitalDecatur, IL · 174 clinicians
Hospital affiliations
- Bellin Memorial HospitalGreen Bay, WI
- Decatur Memorial HospitalDecatur, IL
- St Marys Hospital Medical CtrGreen Bay, WI
- St Vincent HospitalGreen Bay, WI
- Uw HealthRockford, IL
Industry payments (Open Payments)
- 2025$881.11 · 9 payments from 6 companies
- 2024$1,407 · 16 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Phathom Pharmaceuticals, Inc. | $246.52 | 2 |
| Aimmune Therapeutics, Inc. | $218.53 | 2 |
| Janssen Biotech, Inc. | $135.36 | 2 |
| Boston Scientific Corporation | $132.44 | 1 |
| Abbvie Inc. | $123.26 | 1 |
What the 2025 payments were for
- Food and Beverage$881.11 · 9 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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