Active NPI
Mahasha Greffin
- Physician Assistant
- Fredericksburg, VA
National Provider Identifier
1851245161
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Physician Assistant
- License
- 0110011337
- Practice address
- 1031 Care Way
Fredericksburg, VA 22401-8425 - Phone
- (540) 371-7600
- NPI assigned
- Feb 24, 2026
- Sex
- Female
- Sole proprietor
- No
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 |
|---|---|---|---|---|
| Physician Assistant | 363A00000X | 0110011337 | VA | Primary |
Addresses
Primary practice location
1031 Care Way
Fredericksburg, VA 22401-8425
Mailing address
331 W Sample Rd
Deerfield Beach, FL 33064-2756
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in VA
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: No
Enrollment records 1
Care Compare profile
Medicare Care Compare- Specialty
- Physician Assistant
- Education
- Other, 2025
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
Practice addresses (Care Compare)
1031 Care Way
Fredericksburg, VA 22401-8425
Phone (540) 371-7600
Hospital & facility affiliations
- Mary Washington Hospital
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 0110011337 | VA | MD | Physician Assistant |
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.
-
- Hospitalist Physician
- Fredericksburg, VA
- NPI 1750826277
Hospital & facility affiliations 3
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- General Acute Care Hospital
- Fredericksburg, VA
- NPI 1942288527
-
- Cardiovascular Disease Physician
- Fredericksburg, VA
- NPI 1013089879
Hospital
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1771891200000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1771891200000",
"number": "1851245161",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "331 W SAMPLE RD",
"city": "DEERFIELD BEACH",
"state": "FL",
"postal_code": "330642756"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "1031 CARE WAY",
"city": "FREDERICKSBURG",
"state": "VA",
"postal_code": "224018425",
"telephone_number": "540-371-7600"
}
],
"practiceLocations": [],
"basic": {
"last_name": "GREFFIN",
"first_name": "MAHASHA",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2026-02-24",
"last_updated": "2026-02-24",
"certification_date": "2026-02-24",
"status": "A"
},
"taxonomies": [
{
"code": "363A00000X",
"taxonomy_group": "",
"desc": "Physician Assistant",
"state": "VA",
"license": "0110011337",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Fredericksburg, VA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 24, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
- 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.