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Individual provider Active NPI

Gregory James Walker, APRN, PMHNP-BC

  • Psychiatric/Mental Health Nurse Practitioner
  • Austin, TX
National Provider Identifier
1972109684
Registry record updated Dec 7, 2021
On this page

Key facts

NPPES NPI Registry
Primary specialty
Psychiatric/Mental Health Nurse PractitionerTaxonomy code 363LP0808X
License
1017007 Issued in TX
Practice address
3501 Mills Ave
Austin, TX 78731-6309
Phone
(512) 324-2020
NPI assigned
Dec 8, 2020
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Dec 7, 2021

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Psychiatric/Mental Health Registered Nurse 163WP0808X 903731 TX
Psychiatric/Mental Health Nurse Practitioner 363LP0808X C-APN.0003311-C-NP CO
Psychiatric/Mental Health Nurse Practitioner 363LP0808X 1017007 TX Primary

Addresses

Primary practice location

3501 Mills Ave
Austin, TX 78731-6309

Mailing address

3501 Mills Ave
Austin, TX 78731-6309
Phone (512) 324-2020

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CO
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20220120002596 CO Practitioner - Nurse Practitioner 8325430549 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Nurse Practitioner
Education
Other, 2020
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Poudre Valley Medical Group LLCGroup PAC ID 9638208549, 2,425 clinicians

Practice addresses (Care Compare)

1024 S Lemay Ave
Fort Collins, CO 80524-3929

4404 Barranca LN
Unit 101
Castle Rock, CO 80104-7419
Phone (720) 733-5260

Hospital & facility affiliations

  • Poudre Valley Hospital Hospital, Fort Collins, CO, CCN 060010

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Nurse Practitioner

State licenses

LicenseStateTypeSpecialty
903731TXMDPsychiatric/Mental Health Registered Nurse
1017007TXMDPsychiatric/Mental Health Nurse Practitioner

Practice roles

OrganizationSpecialtyStatusNew patients
Poudre Valley Medical Group, LLC CurrentSince Sep 29, 2025 Accepting new patients
Poudre Valley Health Care Inc CurrentSince Feb 21, 2022 Accepting new patients
Poudre Valley Medical Group, LLC CurrentSince Sep 29, 2025 Accepting new patients
Poudre Valley Health Care Inc. Current Accepting new patients

Locations

4404 Barranca Ln
Castle Rock, CO 80104
Phone (720) 733-5260

4601 Corbett Dr
Fort Collins, CO 80528
Phone (970) 207-4800

1024 S Lemay Ave
Fort Collins, CO 80524
Phone (970) 495-7000

1025 Pennock Pl
Fort Collins, CO 80524
Phone (970) 495-8800

2695 Rocky Mountain Ave
Ste 150
Loveland, CO 80538
Phone (970) 624-2412

Organizations & group practices 4

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

Hospital & facility affiliations 15

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

View all 15

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1607385600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1638835200000",
    "number": "1972109684",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3501 MILLS AVE",
            "city": "AUSTIN",
            "state": "TX",
            "postal_code": "787316309",
            "telephone_number": "512-324-2020"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3501 MILLS AVE",
            "city": "AUSTIN",
            "state": "TX",
            "postal_code": "787316309",
            "telephone_number": "512-324-2020"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "WALKER",
        "first_name": "GREGORY",
        "middle_name": "JAMES",
        "credential": "APRN, PMHNP-BC",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2020-12-08",
        "last_updated": "2021-12-07",
        "certification_date": "2021-12-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "163WP0808X",
            "taxonomy_group": "",
            "desc": "Registered Nurse, Psychiatric/Mental Health",
            "state": "TX",
            "license": "903731",
            "primary": false
        },
        {
            "code": "363LP0808X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Psychiatric/Mental Health",
            "state": "CO",
            "license": "C-APN.0003311-C-NP",
            "primary": false
        },
        {
            "code": "363LP0808X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Psychiatric/Mental Health",
            "state": "TX",
            "license": "1017007",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Austin, TX

Sources for this page

Verify at the official NPI Registry.