Mary Karen Mertz, MPT

Primary specialty

Physical TherapistTaxonomy code 225100000X

Practice address

39570 Spanish Oaks Dr
Temecula, CA 92592-8477

Phone

(951) 314-4806

Fax

(951) 696-3808

NPI assigned

Apr 25, 2007

Sex

Female

Sole proprietor

Yes

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

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Enrolled

Practice roles

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.

• Littlefield Physical Therapy, Inc.

  • Physical Therapist
  • Murrieta, CA
  • NPI 1467506691
  NPD (past)

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

{
    "created_epoch": "1177459200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1775088000000",
    "number": "1841419769",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "39570 SPANISH OAKS DR",
            "city": "TEMECULA",
            "state": "CA",
            "postal_code": "925928477",
            "telephone_number": "951-314-4806"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "39570 SPANISH OAKS DR",
            "city": "TEMECULA",
            "state": "CA",
            "postal_code": "925928477",
            "telephone_number": "951-314-4806",
            "fax_number": "951-696-3808"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MERTZ",
        "first_name": "MARY",
        "middle_name": "KAREN",
        "credential": "MPT",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2007-04-25",
        "last_updated": "2026-04-02",
        "certification_date": "2026-04-02",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "225100000X",
            "taxonomy_group": "",
            "desc": "Physical Therapist",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Caitlyn Congetta Marie Menton
• Cheyenne Mercado
• Drew Mercer, M.ED., BCBA, LBA
• Meredith E. Mebane, LCSW
• Matthew Amado Merli
• Tanya Mesirow, PH.D
• Janita Saraiva Mestre, AMFT
• Nicole E. Mevs-Martin, MA, LMFT
• Cheyanne Meyer
• Caitlyne Meyers

• Physical Therapist in Temecula, CA
• Providers in Temecula, CA by specialty
• Physical Therapist in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 2, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.