William Oliva, M.D.
NPI 1356781199ActiveIndividual· Psychiatry & Neurology, Child & Adolescent Psychiatry· Spencer, OK
Psychiatry & Neurology, Child & Adolescent Psychiatry (M.D.) with Integris Ambulatory Care Corporation and 2 other groups, practicing in Spencer, Oklahoma. Their prescriptions cost Medicare Part D more than their services did: $21,272 for 443 claims, against $9,015 paid for services in 2024. Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) was the largest of 11 companies reporting payments in 2025, $558.10 in all, mostly food and beverage. Lists Integris Baptist Medical Center, Inc as a hospital affiliation.
Overview
| NPI | 1356781199 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Jun 25, 2013 |
| Last updated in NPPES | Dec 1, 2020 |
| Certified by provider | Dec 1, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Child & Adolescent Psychiatry Primary | 2084P0804X | 32105 | OK |
| Psychiatry & Neurology, Psychiatry | 2084P0800X | 036139372 | IL |
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 (OK) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 46 |
|---|---|
| Services billed | 200 across 10 procedure codes |
| Paid by Medicare | $9,015 |
Part D prescriptions in 2024
| Prescriptions (claims) | 443 · 550 30-day fills |
|---|---|
| Patients | 79 |
| Total drug cost | $21,272 |
| Generic share | 97% of claims |
Education and affiliations
| Graduation year | 2012 |
|---|---|
| Medicare specialty | Psychiatry |
| Telehealth | Offers telehealth |
Medical groups
- Integris Ambulatory Care CorporationSpencer, OK · 685 clinicians
- Oakwood Springs Physician Group LLCOklahoma City, OK · 17 clinicians
- Olive Branch PsychiatryOklahoma City, OK · 4 clinicians
Hospital affiliation
- Integris Baptist Medical Center, IncOklahoma City, OK
Industry payments (Open Payments)
- 2025$558.10 · 31 payments from 11 companies
- 2024$612.37 · 33 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) | $148.24 | 9 |
| Janssen Pharmaceuticals, Inc | $72.36 | 4 |
| Tris Pharma Inc | $70.59 | 4 |
| Vanda Pharmaceuticals Inc. | $56.93 | 2 |
| Otsuka America Pharmaceutical, Inc. | $53.73 | 3 |
What the 2025 payments were for
- Food and Beverage$558.10 · 31 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other child and adolescent psychiatrists in Spencer
- 1225022924
- 1285798793
- 1013173780