Rex B. Mowat, MD
NPI 1346247251ActiveIndividual· Internal Medicine, Hematology & Oncology· Toledo, OH
Internal Medicine, Hematology & Oncology (MD) in Toledo, Ohio, trained at Wayne State University School of Medicine (class of 1985). Their prescriptions cost Medicare Part D more than their services did: $4,359,002 for 1,031 claims, against $2,541,005 paid for services in 2024. Geron Corporation was the largest of 26 companies reporting payments in 2025, $3,287 in all, mostly consulting fees.
Overview
| NPI | 1346247251 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 7, 2005 |
| Last updated in NPPES | Feb 5, 2026 |
| Certified by provider | Feb 5, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 35063502M | OH |
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 - Hematology/Oncology (MI); Practitioner - Hematology/Oncology (OH) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 695 |
|---|---|
| Services billed | 166,452 across 127 procedure codes |
| Paid by Medicare | $2,541,005 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,031 · 1,520 30-day fills |
|---|---|
| Patients | 242 |
| Total drug cost | $4,359,002 |
| Generic share | 67% of claims |
Education and affiliations
| Medical school | Wayne State University School of Medicine |
|---|---|
| Graduation year | 1985 |
| Medicare specialty | Hematology/Oncology |
Medical groups
- Toledo Clinic IncorporatedToledo, OH · 210 clinicians
- Fchc Medical Care, LLCWauseon, OH · 59 clinicians
Hospital affiliations
- Fulton County Health CenterWauseon, OH
- Mercy St Vincent Medical CenterToledo, OH
- Promedica Charles and Virginia Hickman HospitalAdrian, MI
- Promedica Toledo HospitalToledo, OH
- Wood County HospitalBowling Green, OH
Industry payments (Open Payments)
- 2025$3,287 · 51 payments from 26 companies
- 2024$2,206 · 43 payments from 25 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Geron Corporation | $960.00 | 1 |
| Daiichi Sankyo Inc. | $946.70 | 2 |
| Genzyme Corporation | $187.22 | 3 |
| Novartis Pharmaceuticals Corporation | $166.93 | 7 |
| Janssen Biotech, Inc. | $135.64 | 3 |
What the 2025 payments were for
- Consulting Fee$1,793 · 2 payments
- Food and Beverage$1,374 · 47 payments
- Education$119.99 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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