John N. Larrimer, M.D.
NPI 1073565354ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Reynoldsburg, OH
Internal Medicine, Endocrinology, Diabetes & Metabolism (M.D.) in Reynoldsburg, Ohio, trained at Ohio State University College of Medicine (class of 1972). Their prescriptions cost Medicare Part D more than their services did: $898,605 for 4,094 claims, against $52,836 paid for services in 2024. Novo Nordisk Inc was the largest of 14 companies reporting payments in 2025, $802.08 in all, mostly food and beverage.
Overview
| NPI | 1073565354 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 16, 2006 |
| Last updated in NPPES | Sep 14, 2024 |
| Certified by provider | Sep 14, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | 35-03-4948 | OH |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| 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 - Endocrinology (OH) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 391 |
|---|---|
| Services billed | 795 across 5 procedure codes |
| Paid by Medicare | $52,836 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,094 · 10,251 30-day fills |
|---|---|
| Patients | 550 |
| Total drug cost | $898,605 |
| Generic share | 53% of claims |
Education and affiliations
| Medical school | Ohio State University College of Medicine |
|---|---|
| Graduation year | 1972 |
| Medicare specialty | Endocrinology |
Hospital affiliations
- Diley Ridge Medical CenterCanal Winchester, OH
- Genesis HospitalZanesville, OH
- Licking Memorial HospitalNewark, OH
- Mount Carmel East & WestColumbus, OH
- Ohio State University State Health SystemColumbus, OH
Industry payments (Open Payments)
- 2025$802.08 · 37 payments from 14 companies
- 2024$868.34 · 43 payments from 19 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $229.30 | 12 |
| Abbvie Inc. | $95.61 | 5 |
| Amgen Inc. | $78.08 | 3 |
| Ascendis Pharma Endocrinology Inc | $64.22 | 2 |
| Lilly USA, LLC | $58.40 | 3 |
What the 2025 payments were for
- Food and Beverage$802.08 · 37 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Endocrinology, Diabetes & Metabolism providers in Reynoldsburg
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