Ronald J. Stewart, D.O.
NPI 1801889654ActiveIndividual· Internal Medicine, Cardiovascular Disease· Bloomfield Hills, MI
Internal Medicine, Cardiovascular Disease (D.O.) with Women's Healthcare Associates of Oakland PLLC, practicing in Bloomfield Hills, Michigan. Their prescriptions cost Medicare Part D more than their services did: $533,190 for 3,614 claims, against $82,119 paid for services in 2024. Boehringer Ingelheim Pharmaceuticals, Inc. was the largest of 8 companies reporting payments in 2025, $260.09 in all, mostly food and beverage. Lists Ascension Providence Rochester Hospital and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1801889654 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | Yes |
| NPI issued | Aug 26, 2005 |
| Last updated in NPPES | May 7, 2026 |
| Certified by provider | May 7, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Cardiovascular Disease Primary | 207RC0000X | RS005546 | 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 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 - Internal Medicine (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 101 |
|---|---|
| Services billed | 782 across 32 procedure codes |
| Paid by Medicare | $82,119 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,614 · 8,758 30-day fills |
|---|---|
| Patients | 180 |
| Total drug cost | $533,190 |
| Generic share | 84% of claims |
Education and affiliations
| Graduation year | 1965 |
|---|---|
| Medicare specialty | Internal Medicine |
| Secondary specialties | Cardiovascular Disease (Cardiology) |
Medical group
- Women's Healthcare Associates of Oakland PLLCLake Orion, MI · 7 clinicians
Hospital affiliations
- Ascension Providence Rochester HospitalRochester, MI
- Beaumont Hospital, TroyTroy, MI
- Henry Ford Macomb HospitalClinton Township, MI
Industry payments (Open Payments)
- 2025$260.09 · 12 payments from 8 companies
- 2024$402.13 · 20 payments from 11 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boehringer Ingelheim Pharmaceuticals, Inc. | $61.88 | 3 |
| Pfizer Inc. | $43.09 | 2 |
| Novartis Pharmaceuticals Corporation | $39.71 | 2 |
| Actelion Pharmaceuticals US, Inc. | $38.95 | 1 |
| Novo Nordisk Inc | $24.97 | 1 |
What the 2025 payments were for
- Food and Beverage$260.09 · 12 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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