Joan T. Merrill, MD
NPI 1962471813ActiveIndividual· Internal Medicine, Rheumatology· Oklahoma City, OK
Internal Medicine, Rheumatology (MD) in Oklahoma City, Oklahoma, licensed in OK, with an NPI issued in March 2006. Merck Sharp & Dohme LLC was the largest of 8 companies reporting payments in 2025, $141,319 in all, mostly consulting fees.
Overview
| NPI | 1962471813 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 14, 2006 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Rheumatology Primary | 207RR0500X | 22229 | OK |
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) | Not in the public enrollment file of Oct 1, 2026 |
|---|
Industry payments (Open Payments)
- 2025$141,319 · 37 payments from 8 companies
- 2024$104,893 · 44 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Merck Sharp & Dohme LLC | $57,042 | 7 |
| E.R. Squibb & Sons, L.L.C. | $34,225 | 8 |
| Abbvie Inc. | $28,439 | 12 |
| Ucb Sa | $12,480 | 3 |
| F. Hoffmann-La Roche Ag | $5,479 | 4 |
What the 2025 payments were for
- Consulting Fee$139,595 · 28 payments
- Travel and Lodging$1,350 · 4 payments
- Food and Beverage$373.62 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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