Nathan Michael Weir, M.D., PH.D.
NPI 1861735912ActiveIndividual· Dermatology· Mason, OH
Dermatology (M.D., PH.D.) in Mason, Ohio, trained at Wright State University Boonshoft School of Medicine (class of 2013). 821 Medicare patients in 2024, $254,545 paid; nearly all of their 1,204 Part D prescriptions were generic (94%). Abbvie Inc. was the largest of 24 companies reporting payments in 2025, $43,678 in all, mostly speaking and faculty fees.
Overview
| NPI | 1861735912 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D., PH.D. |
| Sole proprietor | No |
| NPI issued | Mar 27, 2013 |
| Last updated in NPPES | Dec 21, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Dermatology Primary | 207N00000X | 35.130393 | 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 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 - Dermatology (OH) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 821 |
|---|---|
| Services billed | 4,274 across 87 procedure codes |
| Paid by Medicare | $254,545 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,204 · 1,622 30-day fills |
|---|---|
| Patients | 522 |
| Total drug cost | $333,335 |
| Generic share | 94% of claims |
Education and affiliations
| Medical school | Wright State University Boonshoft School of Medicine |
|---|---|
| Graduation year | 2013 |
| Medicare specialty | Dermatology |
Medical group
- Dermatologists of Southwestern Ohio, LLCNew Albany, OH · 116 clinicians
Industry payments (Open Payments)
- 2025$43,678 · 346 payments from 24 companies
- 2024$16,024 · 319 payments from 23 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $15,250 | 73 |
| Almirall LLC | $11,424 | 13 |
| E.R. Squibb & Sons, L.L.C. | $10,770 | 30 |
| Genzyme Corporation | $2,454 | 17 |
| Sun Pharmaceutical Industries Inc. | $557.48 | 32 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$34,058 · 17 payments
- Food and Beverage$6,281 · 323 payments
- Consulting Fee$2,156 · 1 payment
- Travel and Lodging$899.36 · 1 payment
- Education$283.98 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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