Frederick Charles Delafield, M.D.
NPI 1982708939ActiveIndividual· Internal Medicine, Rheumatology· Oklahoma City, OK
Internal Medicine, Rheumatology (M.D.) in Oklahoma City, Oklahoma, trained at University of South Florida College of Medicine (class of 1980). In 2024 Medicare paid $73,602 for 396 patients, and Part D covered 423 of their prescriptions, 87% of them generic. Boehringer Ingelheim Pharmaceuticals, Inc. reported $115.43 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1982708939 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Sep 12, 2006 |
| Last updated in NPPES | Sep 29, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Rheumatology Primary | 207RR0500X | 13196 | OK |
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 - Internal Medicine (OK) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 396 |
|---|---|
| Services billed | 1,142 across 11 procedure codes |
| Paid by Medicare | $73,602 |
Part D prescriptions in 2024
| Prescriptions (claims) | 423 · 497 30-day fills |
|---|---|
| Patients | 194 |
| Total drug cost | $33,562 |
| Generic share | 87% of claims |
Education and affiliations
| Medical school | University of South Florida College of Medicine |
|---|---|
| Graduation year | 1980 |
| Medicare specialty | Internal Medicine |
Medical group
- Mercy Clinic Oklahoma CommunitiesOklahoma City, OK · 649 clinicians
Hospital affiliation
- Mercy Hospital Oklahoma City, IncOklahoma City, OK
Other facilities
- Mercy HospiceHospice · Oklahoma City, OK
Industry payments (Open Payments)
- 2025$115.43 · 1 payment from 1 company
- 2024$269.81 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boehringer Ingelheim Pharmaceuticals, Inc. | $115.43 | 1 |
What the 2025 payments were for
- Food and Beverage$115.43 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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