Active NPI
Mary Jean Stack, DPT
- Physical Therapist
- Great Falls, VA
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Physical Therapist
- License
- 2305212350
- 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
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| 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
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 1508262734 | Other | NPI | |
| PT872017 | Other | DC | LICENSE |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in DC
Enrollment records 1
Care Compare profile
Medicare Care Compare- Specialty
- Physical Therapist in Private Practice
- Education
- Other, 2014
- Medicare assignment
- May accept Medicare assignment
- Group practices
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
| License | State | Type | Specialty |
|---|---|---|---|
| 038499 | NY | MD | General Practice Dentistry |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Great Falls Physical Therapy LLC | Physical Therapist | Current | 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.