Mary Louise Elaine Montgomery, OTD, OTR/L

Primary specialty

Pediatric Occupational TherapistTaxonomy code 225XP0200X

License

7456 Issued in AZ

Practice address

13801 E Benson Hwy
Vail, AZ 85641-9074

Phone

(510) 204-2672

NPI assigned

Feb 10, 2017

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

Other names 1

• Dr. Mary Louise Hesterwerth Former name

Medicare fee-for-service enrollment

Enrolled in AZ

Enrollment records 1

Medicare enrollment (NPD)

Enrolled

State licenses

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 and National Provider Directory roles.

• Theraplay4Kidz, LLC

  • Occupational Therapist
  • Scottsdale, AZ
  • NPI 1750727798
  Medicare reassignment NPD
• Achievement Therapy Services

  • Home Health Agency
  • Scottsdale, AZ
  • NPI 1265499701
  NPD (past)

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

{
    "created_epoch": "1486684800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1784073600000",
    "number": "1235677188",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "13801 E BENSON HWY",
            "city": "VAIL",
            "state": "AZ",
            "postal_code": "856419074"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "13801 E BENSON HWY",
            "city": "VAIL",
            "state": "AZ",
            "postal_code": "856419074",
            "telephone_number": "510-204-2672"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MONTGOMERY",
        "first_name": "MARY",
        "middle_name": "LOUISE ELAINE",
        "name_prefix": "Dr.",
        "credential": "OTD, OTR/L",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2017-02-10",
        "last_updated": "2026-07-15",
        "certification_date": "2026-07-15",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "225XP0200X",
            "taxonomy_group": "",
            "desc": "Occupational Therapist, Pediatrics",
            "state": "CA",
            "license": "16162",
            "primary": false
        },
        {
            "code": "225XP0200X",
            "taxonomy_group": "",
            "desc": "Occupational Therapist, Pediatrics",
            "state": "AZ",
            "license": "7456",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "MARY",
            "last_name": "HESTERWERTH",
            "middle_name": "LOUISE",
            "prefix": "DR.",
            "credential": "OTD, OTR/L",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

• Brienne Elizabeth McCreery, MS, CCC-SLP
• Jada Nicole McGlothin, DOCTOR OF EDUCATION
• Laurie Anne McMahon, FNP-C
• Rita Lorraine Mellon, RN
• Jason Daniel Miller
• Ana S Moreno, MA, BCBA, LBA
• Shannon Murphy, PT
• John Niggl, R.R.T
• Cliff Moseti Obwoge
• Jennica Louise Olauson

• Pediatric Occupational Therapist in Vail, AZ
• Providers in Vail, AZ by specialty
• Pediatric Occupational Therapist in Arizona

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 15, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.