Individual provider Active NPI

Mary Jean Stack, DPT

  • Physical Therapist
  • Great Falls, VA
National Provider Identifier
1508262734
Registry record updated Jun 4, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Physical TherapistTaxonomy code 225100000X
License
2305212350 Issued in VA
Practice address
766 Walker Rd Ste B
Great Falls, VA 22066-2650
Phone
(202) 349-1030
Fax
(703) 364-5124
NPI assigned
Nov 17, 2014
Sex
Female
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Jun 4, 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 2305212350 VA Primary

Addresses

Primary practice location

766 Walker Rd Ste B
Great Falls, VA 22066-2650

Mailing address

766 Walker Rd Ste B
Great Falls, VA 22066-2650
Phone (202) 349-1030

Other practice location 1

10135 Colvin Run Rd Ste 100
Great Falls, VA 22066-1872
Phone (703) 349-1030

Other identifiers 2

IdentifierTypeStateIssuer
1508262734OtherNPI
PT872017OtherDCLICENSE

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in DC

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20161012001002 DC Practitioner - Physical Therapist in Private Practice 9032428123 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Physical Therapist in Private Practice
Education
Other, 2014
Medicare assignment
May accept Medicare assignment
Group practices
Great Falls Physical Therapy LLCGroup PAC ID 6406286533, 8 clinicians

Practice addresses (Care Compare)

10135 Colvin Run Rd
Suite 100
Great Falls, VA 22066-1872
Phone (703) 349-1030

766 Walker Rd
Suite B
Great Falls, VA 22066-2650
Phone (703) 349-1030

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled

State licenses

LicenseStateTypeSpecialty
038499NYMDGeneral Practice Dentistry

Practice roles

OrganizationSpecialtyStatusNew patients
Great Falls Physical Therapy LLC Physical Therapist CurrentSince Jan 4, 2020 Accepting new patients

Locations

766 Walker Rd
Ste B
Great Falls, VA 22066
Phone (703) 349-1030

10135 Colvin Run Rd
Ste 100
Great Falls, VA 22066
Phone (703) 349-1030

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": "1416182400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1780531200000",
    "number": "1508262734",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "766 WALKER RD STE B",
            "city": "GREAT FALLS",
            "state": "VA",
            "postal_code": "220662650",
            "telephone_number": "202-349-1030",
            "fax_number": "703-364-5124"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "766 WALKER RD STE B",
            "city": "GREAT FALLS",
            "state": "VA",
            "postal_code": "220662650",
            "telephone_number": "202-349-1030",
            "fax_number": "703-364-5124"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "10135 Colvin Run Rd Ste 100",
            "address_purpose": "LOCATION",
            "city": "Great Falls",
            "state": "VA",
            "postal_code": "220661872",
            "country_code": "US",
            "telephone_number": "703-349-1030",
            "fax_number": "703-364-5124",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "STACK",
        "first_name": "MARY JEAN",
        "name_prefix": "Dr.",
        "credential": "DPT",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2014-11-17",
        "last_updated": "2026-06-04",
        "certification_date": "2026-06-04",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "225100000X",
            "taxonomy_group": "",
            "desc": "Physical Therapist",
            "state": "VA",
            "license": "2305212350",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "NPI",
            "identifier": "1508262734",
            "state": null
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "LICENSE",
            "identifier": "PT872017",
            "state": "DC"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Great Falls, VA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 4, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
  • 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.