Gregory James Walker, APRN, PMHNP-BC
Psychiatric/Mental Health Nurse Practitioner · Austin, TX
Gregory James Walker, APRN, PMHNP-BC is a psychiatric/mental health nurse practitioner with a practice address in Austin, Texas, and NPI 1972109684, issued on Dec 8, 2020. Check the license (Texas 1017007, as entered in NPPES) with the Texas board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Gregory James Walker
- Credential
- APRN, PMHNP-BC
- Primary taxonomy
- Psychiatric/Mental Health Nurse Practitioner 363LP0808X
- License numbers
- 1017007 TX
903731 TX
C-APN.0003311-C-NP CO
Self-reported in NPPES; status is on the state search - Practice location
- 3501 Mills Ave, Austin, TX 78731
- Phone
- (512) 324-2020
- Enumerated
- Dec 8, 2020
- Record last updated
- Dec 7, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20220120002596); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest psychiatric/mental health nurse practitioner records → All 4,227 in Texas → Look up another NPI →
Also registered at 3501 Mills Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Anna Beasley, M.D.Psychiatry Physician1104119981
- Lloyd Berg, PHDPsychologist1548295785
- Sarah Bovio, MDStudent in an Organized Health Care Education/Training Program1912520073
- Debra Burkhardt, LCSWClinical Social Worker1740927177
- Kira Carey, M.DPsychiatry Physician1386665453
- Benjamin Chambers, M.D.Psychiatry Physician1255725511
Verify Gregory James Walker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Texas board licenses this profession
Search for license 1017007Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average psychiatric/mental health nurse practitioner in 2024
67 Medicare Part D claims for 19 beneficiaries, against an average of 906 among the 30,717 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 97.6 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Poudre Valley Medical Group LLCFort Collins, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory James Walker among 4,227 psychiatric/mental health nurse practitioner records in Texas
Gregory James Walker, APRN, PMHNP-BC is one of 4,227 psychiatric/mental health nurse practitioner records with a practice address in Texas. 66% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 37% of them.
- NPI issued2020 · 37% of these records are older, 56% newer
- In a Medicare fileYes · 66% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2020 · median 2021 among the 2,245 with a school on file
- Record last updated2021 · 18% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LP0808X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
304 psychiatric/mental health nurse practitioner records list a practice address in Austin
They are 304 of the 26,585 NPPES records with a practice address in Austin, and 4,227 psychiatric/mental health nurse practitioner records in Texas.
All 4,227 in Texas → Every provider in Austin → Psychiatric/Mental Health Nurse Practitioner nationwide →
The 8 psychiatric/mental health nurse practitioner records with the nearest ZIP codes
- Christine Chioma, NURSEAustin, TX 787311083972608
- Fidelia Chukwuto, DNP, PMHNP-BC, APRNAustin, TX 787311194186668
- Kristen Davis, NPAustin, TX 787311063943421
- Tracy Figlan, APRNAustin, TX 787311104042621
- Olivia Gachomo, PMHMPAustin, TX 787311942690359
- Sonia Ike, PMHNP-BCAustin, TX 787311730689605
- Jacquelin Joffray, APRNAustin, TX 787311154574879
- Kimia Lambert, FNP-C, PMHNP-CAustin, TX 787311619491917
Common questions
What is Gregory James Walker, APRN, PMHNP-BC's NPI number?
Gregory James Walker, APRN, PMHNP-BC's National Provider Identifier (NPI) is 1972109684, issued on Dec 8, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Gregory James Walker, APRN, PMHNP-BC located?
The NPPES record lists a practice address at 3501 Mills Ave, Austin, TX, 78731. Phone: (512) 324-2020. Providers update this record themselves, so call before visiting.
How can I verify Gregory James Walker, APRN, PMHNP-BC's license?
NPPES lists Texas license number 1017007, as entered by the provider. Search the Texas board that licenses this profession; the NPPES record confirms identity only.
How much does Gregory James Walker, APRN, PMHNP-BC prescribe under Medicare Part D?
In 2024, Gregory James Walker, APRN, PMHNP-BC had 67 Medicare Part D claims for 19 beneficiaries; the average among psychiatric/mental health nurse practitioner prescribers was 906. Part D covers Medicare prescriptions only.
What is Gregory James Walker, APRN, PMHNP-BC's MIPS final score?
The 2023 MIPS final score is 97.6 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.