Individual provider Active NPI

Mary Thorsen, PT

  • Physical Therapist
  • Walkersville, MD
National Provider Identifier
1497755300
Registry record updated Jul 13, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Physical TherapistTaxonomy code 225100000X
License
17003 Issued in MD
Practice address
19 W Frederick St
Walkersville, MD 21793-8230
Phone
(301) 845-0045
Fax
(301) 845-0045
NPI assigned
Jul 21, 2005
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 13, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Physical Therapist 225100000X 17003 MD Primary

Addresses

Primary practice location

19 W Frederick St
Walkersville, MD 21793-8230

Mailing address

731 Baltimore Blvd
Westminster, MD 21157-6105
Phone (410) 848-8628

Other identifiers 5

IdentifierTypeStateIssuer
322679OtherMAMSI PLANS
5060511OtherAETNA NON HMO
T615-0008OtherDCCAREFIRST BLUECHOICE
2118118OtherAETNA HMO
H481DO-53189902OtherMDCAREFIRST BLUECROSS

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Not listed in the public Medicare enrollment file

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled

State licenses

LicenseStateTypeSpecialty
7728ALMDPharmacist

Practice roles

OrganizationSpecialtyStatusNew patients
Fredericks Sport and Spine Clinic Inc Past Accepting new patients

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 and National Provider Directory roles.

NPI Registry JSON

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

{
    "created_epoch": "1121904000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1497755300",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "731 BALTIMORE BLVD",
            "city": "WESTMINSTER",
            "state": "MD",
            "postal_code": "211576105",
            "telephone_number": "410-848-8628",
            "fax_number": "410-848-3909"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "19 W FREDERICK ST",
            "city": "WALKERSVILLE",
            "state": "MD",
            "postal_code": "217938230",
            "telephone_number": "301-845-0045",
            "fax_number": "301-845-0045"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "THORSEN",
        "first_name": "MARY",
        "credential": "PT",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2005-07-21",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "225100000X",
            "taxonomy_group": "",
            "desc": "Physical Therapist",
            "state": "MD",
            "license": "17003",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MAMSI PLANS",
            "identifier": "322679",
            "state": null
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "AETNA NON HMO",
            "identifier": "5060511",
            "state": null
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "CAREFIRST BLUECHOICE",
            "identifier": "T615-0008",
            "state": "DC"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "AETNA HMO",
            "identifier": "2118118",
            "state": null
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "CAREFIRST BLUECROSS",
            "identifier": "H481DO-53189902",
            "state": "MD"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Walkersville, MD

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 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.