Doctor profile · Federal record
Dr. John Brennan, M.D, P.A.
Psychiatry Physician (CMS: Psychiatry) · Dallas, TX
- NPI 1336123173
- Accepts Medicare
- 37 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
7557 Rambler RD Ste 565
Dallas, TX 752312373
(214) 824-2273
fax (214) 826-9340
Credentials & registration
- NPI registered
- December 2005 — 21 yrs on file
- Profile last updated
- December 2, 2025
- Year of graduation
- 1989 — 37 yrs since
- Specialty taxonomy
- 2084P0800X — NUCC code
- State license (1)
- Texas #J3750
- Medicaid
- TX #0359267-01
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1336123173. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
450
Distinct HCPCS
3
Medicare allowed
$50,756
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 290 | 127 | $127 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 134 | 76 | $90 | |
90833 |
Psychotherapy with evaluation and management visit, 30 minutes | 26 | 19 | $69 |
In context: peer comparison
Among 53 peers in this city , average services per provider: 123. This provider delivers 3.7× the peer median.Open Payments
Industry payments received
All-time total
$2,518
Transactions
114
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| ABBVIE INC. | 15 | $313.52 | |
| Supernus Pharmaceuticals, Inc. | 1 | $297.74 | |
| Alkermes, Inc. | 14 | $284.19 | |
| ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.) | 15 | $265.65 | |
| Almatica Pharma LLC | 13 | $259.75 | |
| Lundbeck LLC | 10 | $222.55 | |
| Tris Pharma Inc | 11 | $205.48 | |
| Bausch Health US, LLC | 12 | $205.41 | |
| Otsuka America Pharmaceutical, Inc. | 7 | $138.18 | |
| Takeda Pharmaceuticals U.S.A., Inc. | 6 | $109.89 | |
| Corium, LLC | 4 | $70.25 | |
| Validus Pharmaceuticals LLC | 1 | $62.56 | |
| E.R. Squibb & Sons, L.L.C. | 2 | $35.61 | |
| Neos Therapeutics, LP | 2 | $32.36 | |
| IDORSIA PHARMACEUTICALS US INC | 1 | $14.66 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
2,457
Patients
480
Total drug cost
$47,651
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Clonazepam | Generic | 337 | 58 | $2,990 |
| Alprazolam | Generic | 316 | 44 | $1,807 |
| Trazodone Hcl | Generic | 264 | 63 | $4,956 |
| Venlafaxine Hcl Er (Venlafaxine Hcl) | Brand | 254 | 52 | $7,977 |
| Dextroamphetamine-Amphetamine (Dextroamphetamine/Amphetamine) | Brand | 164 | 38 | $8,814 |
| Zolpidem Tartrate | Generic | 162 | 25 | $915 |
| Lorazepam | Generic | 159 | 29 | $1,530 |
| Duloxetine Hcl | Generic | 122 | 29 | $4,582 |
| Diazepam | Generic | 117 | 20 | $858 |
| Bupropion Xl (Bupropion Hcl) | Brand | 112 | 28 | $4,439 |
Frequently asked questions
What is Dr. John Brennan's medical specialty?
Dr. John Brennan practices Psychiatry Physician in Dallas, TX.
Where does Dr. John Brennan practice?
Dr. John Brennan practices at 7557 Rambler RD Ste 565, Dallas, TX 752312373. Office phone: 2148242273.
What is Dr. John Brennan's NPI?
Dr. John Brennan's National Provider Identifier (NPI) is 1336123173, issued by NPPES.
Does Dr. John Brennan accept Medicare assignment?
Yes. Dr. John Brennan accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. John Brennan commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99213); Psychotherapy with evaluation and management visit (HCPCS 90833). Source: CMS Medicare Physician & Other Practitioners file.