Doctor profile · Federal record
Dr. Brennan Walker, APRN, CNP
Acute Care Nurse Practitioner (CMS: Nurse Practitioner) · Family Nurse Practitioner · Gerontology Nurse Practitioner · Oklahoma City, OK
- NPI 1215692702
- Accepts Medicare
- MIPS 99.2 / 100 · 2023
- 5 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
4050 W Memorial RD Fl 3
Oklahoma City, OK 731208382
(405) 608-3800
fax (405) 242-5946 - Mailing address
-
7800 Nw 85Th Ter
Oklahoma City, OK 731323385
Credentials & registration
- NPI registered
- November 2021 — 5 yrs on file
- Profile last updated
- February 16, 2023
- Year of graduation
- 2021 — 5 yrs since
- Specialty taxonomy
- 363LA2100X — NUCC code
- State license (1)
- Oklahoma #204622
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1215692702. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
920
Distinct HCPCS
4
Medicare allowed
$68,970
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 448 | 384 | $78 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 368 | 316 | $78 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 61 | 61 | $53 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 43 | 42 | $52 |
In context: peer comparison
Among 27 peers in this city , average services per provider: 66. This provider delivers 14× the peer median.Open Payments
Industry payments received
All-time total
$253
Transactions
13
Manufacturers
6
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| ZOLL Services LLC (A/K/A ZOLL LifeCor Corp) | 4 | $86.88 | |
| E.R. Squibb & Sons, L.L.C. | 3 | $47.50 | |
| Novartis Pharmaceuticals Corporation | 2 | $46.10 | |
| Merck Sharp & Dohme LLC | 2 | $43.90 | |
| Novo Nordisk Inc | 1 | $15.29 | |
| PFIZER INC. | 1 | $13.50 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
695
Patients
309
Total drug cost
$76,911
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Clopidogrel (Clopidogrel Bisulfate) | Brand | 115 | 59 | $2,398 |
| Amlodipine Besylate | Generic | 110 | 52 | $1,599 |
| Isosorbide Mononitrate Er (Isosorbide Mononitrate) | Brand | 67 | 33 | $1,108 |
| Metoprolol Succinate | Generic | 67 | 35 | $1,556 |
| Eliquis (Apixaban) | Brand | 59 | 18 | $51,433 |
| Lisinopril | Generic | 43 | 18 | $338 |
| Losartan Potassium | Generic | 35 | 13 | $698 |
| Hydralazine Hcl | Generic | 34 | 15 | $581 |
| Atorvastatin Calcium | Generic | 30 | 15 | $455 |
| Diltiazem 24hr Er (Cd) (Diltiazem Hcl) | Brand | 27 | 12 | $1,923 |
Frequently asked questions
What is Dr. Brennan Walker's medical specialty?
Dr. Brennan Walker practices Acute Care Nurse Practitioner in Oklahoma City, OK.
Where does Dr. Brennan Walker practice?
Dr. Brennan Walker practices at 4050 W Memorial RD Fl 3, Oklahoma City, OK 731208382. Office phone: 4056083800.
What is Dr. Brennan Walker's NPI?
Dr. Brennan Walker's National Provider Identifier (NPI) is 1215692702, issued by NPPES.
Does Dr. Brennan Walker accept Medicare assignment?
Yes. Dr. Brennan Walker accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Brennan Walker 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 99214); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.