Doctor profile · Federal record
Dr. Gregory Walker, APRN, PMHNP-BC
Psychiatric/Mental Health Nurse Practitioner (CMS: Nurse Practitioner) · Psychiatric/Mental Health Registered Nurse · Psychiatric/Mental Health Nurse Practitioner · Austin, TX
- NPI 1972109684
- Accepts Medicare
- MIPS 93.3 / 100 · 2023
- 6 yrs in practice
- Licensed in 2 states
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
3501 Mills Ave
Austin, TX 787316309
(512) 324-2020
Credentials & registration
- NPI registered
- December 2020 — 6 yrs on file
- Profile last updated
- December 7, 2021
- Year of graduation
- 2020 — 6 yrs since
- Specialty taxonomy
- 363LP0808X — NUCC code
- State licenses (3)
- Texas #1017007 · Texas #903731 · Colorado #C-APN.0003311-C-NP
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1972109684. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
146
Distinct HCPCS
2
Medicare allowed
$11,282
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 123 | 31 | $66 | |
90792 |
Psychiatric diagnostic evaluation with medical services | 23 | 23 | $140 |
In context: peer comparison
Among 26 peers in this city , average services per provider: 161. This provider delivers 0.9× the peer median.Hospital affiliations
Frequently asked questions
What is Dr. Gregory Walker's medical specialty?
Dr. Gregory Walker practices Psychiatric/Mental Health Nurse Practitioner in Austin, TX.
Where does Dr. Gregory Walker practice?
Dr. Gregory Walker practices at 3501 Mills Ave, Austin, TX 787316309. Office phone: 5123242020.
What is Dr. Gregory Walker's NPI?
Dr. Gregory Walker's National Provider Identifier (NPI) is 1972109684, issued by NPPES.
Does Dr. Gregory Walker accept Medicare assignment?
Yes. Dr. Gregory Walker accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Gregory Walker commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Psychiatric diagnostic evaluation with medical services (HCPCS 90792). Source: CMS Medicare Physician & Other Practitioners file.