John Michael Brennan, M.D, P.A.
NPI 1336123173ActiveIndividual· Psychiatry & Neurology, Psychiatry· Dallas, TX
Psychiatry & Neurology, Psychiatry (M.D, P.A.) in Dallas, Texas, trained at University of Texas Southwestern Medical School at Dallas (class of 1989). Their prescriptions cost Medicare Part D more than their services did: $465,996 for 3,225 claims, against $46,958 paid for services in 2024. Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) was the largest of 16 companies reporting payments in 2025, $3,051 in all, mostly food and beverage.
Overview
| NPI | 1336123173 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D, P.A. |
| Sole proprietor | Yes |
| NPI issued | Dec 5, 2005 |
| Last updated in NPPES | Dec 2, 2025 |
| Certified by provider | Dec 2, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Psychiatry Primary | 2084P0800X | J3750 | TX |
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 (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 138 |
|---|---|
| Services billed | 716 across 5 procedure codes |
| Paid by Medicare | $46,958 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,225 · 5,164 30-day fills |
|---|---|
| Patients | 243 |
| Total drug cost | $465,996 |
| Generic share | 92% of claims |
Education and affiliations
| Medical school | University of Texas Southwestern Medical School at Dallas |
|---|---|
| Graduation year | 1989 |
| Medicare specialty | Psychiatry |
| Telehealth | Offers telehealth |
Hospital affiliation
- Baylor University Medical CenterDallas, TX
Industry payments (Open Payments)
- 2025$3,051 · 159 payments from 16 companies
- 2024$2,518 · 114 payments from 15 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) | $456.16 | 27 |
| Otsuka America Pharmaceutical, Inc. | $396.60 | 17 |
| Vanda Pharmaceuticals Inc. | $395.77 | 18 |
| Abbvie Inc. | $335.95 | 22 |
| Bausch Health US, LLC | $270.53 | 17 |
What the 2025 payments were for
- Food and Beverage$3,051 · 159 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Psychiatry & Neurology, Psychiatry providers in Dallas
- 1144146713
- 1316914666
- 1639769490
- 1134503873
- 1588251854
- 1750562237
- 1740081595
- 1912032319
- 1225866114
- 1164948097
- 1700651775
- 1407328594