William Diebold, MD
NPI 1770573511ActiveIndividual· Psychiatry & Neurology, Psychiatry· Johnson City, TN
Psychiatry & Neurology, Psychiatry (MD) in Johnson City, Tennessee, trained at University of Louisville School of Medicine (class of 1991). Their prescriptions cost Medicare Part D more than their services did: $112,545 for 3,653 claims, against $12,943 paid for services in 2024. Otsuka America Pharmaceutical, Inc. was the largest of 9 companies reporting payments in 2025, $801.25 in all, mostly food and beverage.
Overview
| NPI | 1770573511 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Oct 24, 2005 |
| Last updated in NPPES | Dec 12, 2025 |
| Certified by provider | Dec 12, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Psychiatry Primary | 2084P0800X | MD26973 | TN |
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 - Psychiatry (TN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 60 |
|---|---|
| Services billed | 164 across 4 procedure codes |
| Paid by Medicare | $12,943 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,653 · 5,266 30-day fills |
|---|---|
| Patients | 193 |
| Total drug cost | $112,545 |
| Generic share | 96% of claims |
Education and affiliations
| Medical school | University of Louisville School of Medicine |
|---|---|
| Graduation year | 1991 |
| Medicare specialty | Psychiatry |
| Telehealth | Offers telehealth |
Medical group
- Takoma Regional Hospital IncGreeneville, TN · 28 clinicians
Hospital affiliation
- Greeneville Community HospitalGreeneville, TN
Industry payments (Open Payments)
- 2025$801.25 · 47 payments from 9 companies
- 2024$878.76 · 47 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Otsuka America Pharmaceutical, Inc. | $165.59 | 9 |
| Vanda Pharmaceuticals Inc. | $161.30 | 12 |
| Teva Pharmaceuticals USA, Inc. | $159.62 | 9 |
| Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) | $75.74 | 3 |
| Lundbeck LLC | $64.74 | 4 |
What the 2025 payments were for
- Food and Beverage$801.25 · 47 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 58 psychiatrists in Johnson City · All psychiatrists in Tennessee