Mary Elizabeth Steiner, FNP-C, PMHNP-C

Primary specialty

Family Nurse PractitionerTaxonomy code 363LF0000X

License

AP8398 Issued in AZ

Practice address

2711 S Gordon
Mesa, AZ 85209-7349

Phone

(480) 748-9823

NPI assigned

Feb 3, 2016

Last updated

Aug 18, 2026By the provider in NPPES

Sex

Female

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Enrolled in AZ

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: No

Green means eligible to order or refer.

Enrollment records 1

Specialty

Nurse Practitioner

Education

Other, 2015

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Unchained-Gilbert LLCGroup PAC ID 8527424100, 2 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Nurse Practitioner

Practice roles

Locations

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.

• Unchained-Gilbert LLC

  dba Unchained Wellness Clinic

  • Psychiatry Physician
  • Gilbert, AZ
  • NPI 1578274346
  Medicare reassignment Care Compare group NPD
• Arizona Spine and Pain Specialists LLC

  • Interventional Pain Medicine Physician
  • Glendale, AZ
  • NPI 1336552140
  Medicare reassignment NPD
• Arizona Spine and Pain Specialists LLC

  dba AZ Pain Doctors

  • Durable Medical Equipment & Medical Supplies
  • Sun City West, AZ
  • NPI 1871124206
  NPD

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

{
    "created_epoch": "1454457600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1787011200000",
    "number": "1831557958",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2711 S GORDON",
            "city": "MESA",
            "state": "AZ",
            "postal_code": "852097349",
            "telephone_number": "480-748-9823"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2711 S GORDON",
            "city": "MESA",
            "state": "AZ",
            "postal_code": "852097349",
            "telephone_number": "480-748-9823"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "STEINER",
        "first_name": "MARY",
        "middle_name": "ELIZABETH",
        "credential": "FNP-C, PMHNP-C",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2016-02-03",
        "last_updated": "2026-08-18",
        "certification_date": "2026-08-18",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "AZ",
            "license": "AP8398",
            "primary": true
        },
        {
            "code": "363LP0808X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Psychiatric/Mental Health",
            "state": "AZ",
            "license": "AP8398",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Mary Martha Stefan
• Alyson Steffens, SLP-A
• Craig M Stein, M.D.
• Darryl G Stein, MD
• Tania May Stein, CCC-SLP
• Caitlyn Marie Stekeur, MS, OTR/L
• Justin Jay Stenquist, M.D.
• Stephen a. Bair, DO PC (Family Physicians of East Valley)
• Stephen C Driggs, DDS and Rick Turley, DDS, PLC
• Stephen E. Hatfield, DO LLC (East Mesa Orthopedics & Sports Medicine)

• Family Nurse Practitioner in Mesa, AZ
• Providers in Mesa, AZ by specialty
• Family Nurse Practitioner in Arizona

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 18, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.