Individual provider Active NPI

Alejandro Mustieles, MD

  • Psychiatry Physician
  • Atascadero, CA
National Provider Identifier
1508445255
Registry record updated Sep 15, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Psychiatry PhysicianTaxonomy code 2084P0800X
License
A208541 Issued in CA
Practice address
10333 El Camino Real
Atascadero, CA 93422-5808
Phone
(805) 468-2000
NPI assigned
Apr 7, 2021
Last updated
Sep 15, 2026By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Sep 15, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Psychiatry Physician 2084P0800X ME172694 FL
Psychiatry Physician 2084P0800X A208541 CA Primary

Addresses

Primary practice location

10333 El Camino Real
Atascadero, CA 93422-5808

Mailing address

10333 El Camino Real
Atascadero, CA 93422-5808
Phone (805) 468-2000

Medicare participation

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

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20260302001187 TX Practitioner - Psychiatry 6103308085 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Psychiatry
Education
Other, 2010
Medicare assignment
May accept Medicare assignment
Group practices
DFW Physicians Medical Associates LLCGroup PAC ID 8820493000, 14 clinicians

Practice addresses (Care Compare)

425 N Highland Ave
260 DFW Physicians Medical Associates LLC
Sherman, TX 75092-7377
Phone (903) 957-0082

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
A208541CAMDPsychiatry Physician
ME172694FLMDPsychiatry Physician

Practice roles

OrganizationSpecialtyStatusNew patients
DFW Physicians Medical Associates LLC CurrentSince Jan 21, 2026 Accepting new patients

Locations

7589 Preston Rd
Ste 900
Frisco, TX 75034
Phone (214) 705-7749

1220 W Presidio St
Ft Worth, TX 76102
Phone (817) 333-2767

425 N Highland Ave
Ste 260
Sherman, TX 75092
Phone (817) 729-4532

Interoperability endpoints

  • FHIR API: https://fhir.nextgen.com/nge/prod/fhir-api-r4/fhir/r4/

Organizations & group practices 1

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

NPI Registry JSON

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

{
    "created_epoch": "1617753600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1789430400000",
    "number": "1508445255",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "10333 EL CAMINO REAL",
            "city": "ATASCADERO",
            "state": "CA",
            "postal_code": "934225808",
            "telephone_number": "805-468-2000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "10333 EL CAMINO REAL",
            "city": "ATASCADERO",
            "state": "CA",
            "postal_code": "934225808",
            "telephone_number": "805-468-2000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MUSTIELES",
        "first_name": "ALEJANDRO",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2021-04-07",
        "last_updated": "2026-09-15",
        "certification_date": "2026-09-15",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "FL",
            "license": "ME172694",
            "primary": false
        },
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "CA",
            "license": "A208541",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Atascadero, CA

Sources for this page

Verify at the official NPI Registry.