Robert A. Williams, D.O.
Internal Medicine, Cardiovascular Disease (D.O.) in Kalamazoo, Michigan, trained at Michigan State University College of Osteopathic Medicine (class of 1994). Their prescriptions cost Medicare Part D more than their services did: $2,157,080 for 6,484 claims, against $93,853 paid for services in 2024. Novartis Pharmaceuticals Corporation was the largest of 16 companies reporting payments in 2025, $1,216 in all, mostly food and beverage. A record with the same name and state is on the OIG exclusion list; it carries no NPI, so check it before acting.
Overview
| NPI | 1730109778 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | No |
| NPI issued | Jul 20, 2006 |
| Last updated in NPPES | Nov 27, 2023 |
| Certified by provider | Sep 25, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Cardiovascular Disease Primary | 207RC0000X | 5101012289 | MI |
Exclusion screening
Possible match: verify before acting. The OIG list has a record with the same name in Michigan, but that record carries no NPI, so it may be a different person or business.
| Matched by | Name on OIG list | Exclusion type | Excluded since | Location |
|---|---|---|---|---|
| Name + state | Robert Gary Williams · Nurse/Nurses Aide | 1128b4 | Dec 18, 2008 | Saginaw, MI |
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | Possible (name) | See above |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Cardiovascular Disease (Cardiology) (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,416 |
|---|---|
| Services billed | 2,522 across 49 procedure codes |
| Paid by Medicare | $93,853 |
Part D prescriptions in 2024
| Prescriptions (claims) | 6,484 · 13,721 30-day fills |
|---|---|
| Patients | 888 |
| Total drug cost | $2,157,080 |
| Generic share | 70% of claims |
Education and affiliations
| Medical school | Michigan State University College of Osteopathic Medicine |
|---|---|
| Graduation year | 1994 |
| Medicare specialty | Cardiovascular Disease (Cardiology) |
| Secondary specialties | Internal Medicine |
Medical groups
- Bronson Methodist HospitalKalamazoo, MI · 729 clinicians
- Bronson Battle Creek HospitalBattle Creek, MI · 193 clinicians
- Bronson Lakeview HospitalSouth Haven, MI · 76 clinicians
- Bronson South Haven HospitalSouth Haven, MI · 39 clinicians
Hospital affiliations
- Borgess Medical CenterKalamazoo, MI
- Bronson Battle Creek HospitalBattle Creek, MI
- Bronson Lakeview HospitalPaw Paw, MI
- Bronson Methodist HospitalKalamazoo, MI
- Bronson South Haven HospitalSouth Haven, MI
Industry payments (Open Payments)
- 2025$1,216 · 67 payments from 16 companies
- 2024$1,568 · 101 payments from 19 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novartis Pharmaceuticals Corporation | $191.67 | 14 |
| Boston Scientific Corporation | $188.53 | 11 |
| Pfizer Inc. | $140.24 | 9 |
| Abbott Laboratories | $126.40 | 6 |
| E.R. Squibb & Sons, L.L.C. | $97.36 | 5 |
What the 2025 payments were for
- Food and Beverage$1,216 · 67 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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