William Daniel Chapman, DO
NPI 1184129512ActiveIndividual· Psychiatry & Neurology, Neurology· Cincinnati, OH
Psychiatry & Neurology, Neurology (DO) in Cincinnati, Ohio, trained at Oklahoma State University College of Osteopathic Medicine (class of 2018). Their prescriptions cost Medicare Part D more than their services did: $1,603,883 for 1,300 claims, against $15,994 paid for services in 2024. Biogen, Inc. was the largest of 9 companies reporting payments in 2025, $40,969 in all, mostly speaking and faculty fees.
Overview
| NPI | 1184129512 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Mar 27, 2018 |
| Last updated in NPPES | May 16, 2023 |
| Certified by provider | May 16, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Neurology Primary | 2084N0400X | 34.016298 | OH |
| Psychiatry & Neurology, Neurology | 2084N0400X | DO208115 | OR |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
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 - Neurology (KY); Practitioner - Neurology (OH) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 110 |
|---|---|
| Services billed | 313 across 10 procedure codes |
| Paid by Medicare | $15,994 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,300 · 1,684 30-day fills |
|---|---|
| Patients | 142 |
| Total drug cost | $1,603,883 |
| Generic share | 84% of claims |
Education and affiliations
| Medical school | Oklahoma State University College of Osteopathic Medicine |
|---|---|
| Graduation year | 2018 |
| Medicare specialty | Neurology |
| Telehealth | Offers telehealth |
Medical group
- University of Cincinnati Physicians Company LLCCincinnati, OH · 1,506 clinicians
Hospital affiliations
- University of Cincinnati Medical Center, LLCCincinnati, OH
- West Chester HospitalWest Chester, OH
Industry payments (Open Payments)
- 2025$40,969 · 82 payments from 9 companies
- 2024$10,777 · 60 payments from 10 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Biogen, Inc. | $18,974 | 15 |
| Tg Therapeutics, Inc. | $11,479 | 10 |
| Amgen Inc. | $7,017 | 7 |
| Novartis Pharmaceuticals Corporation | $2,883 | 42 |
| Emd Serono, Inc. | $281.27 | 4 |
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$27,623 · 11 payments
- Consulting Fee$8,827 · 7 payments
- Food and Beverage$2,543 · 56 payments
- Travel and Lodging$1,977 · 8 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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