Active NPI
Kristy Marie Grainger, FNP
- Family Nurse Practitioner
- Winchendon, MA
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Family Nurse Practitioner
- License
- RN270461
- Practice address
- 55 Hospital Dr
Winchendon, MA 01475-1820 - Phone
- (978) 297-2311
- Fax
- (978) 297-4173
- NPI assigned
- Aug 6, 2020
- Last updated
- May 6, 2026
- 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 2
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Family Nurse Practitioner | 363LF0000X | RN270461 | MA | Primary |
| Student in an Organized Health Care Education/Training Program | 390200000X | MA |
Addresses
Primary practice location
55 Hospital Dr
Winchendon, MA 01475-1820
Mailing address
55 Hospital Dr
Winchendon, MA 01475-1899
Phone (978) 297-2311
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in MA
- 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
- Nurse Practitioner
- Education
- Other, 2020
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Telehealth
- Offers telehealth services
- Group practices
Practice addresses (Care Compare)
2033 Main St
Athol, MA 01331-3535
Phone (978) 249-3511
250 Green St
Gardner, MA 01440-1396
Phone (978) 630-6460
Hospital & facility affiliations
Merit-based Incentive Payment System (MIPS)
- Final score
- 100 of 100
- Quality
- 82.98
- Promoting interoperability
- 100
- Improvement activities
- 40
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Nurse Practitioner
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Henry Heywood Memorial Hospital | Family | Current | Accepting new patients |
| Athol Memorial Hospital Incorporated | Family | Current | Accepting new patients |
| Henry Heywood Memorial Hospital | Current | Accepting new patients | |
| Heywood Medical Group Inc. | Family | Current | Accepting new patients |
Locations
2033 Main St
Athol, MA 01331
Phone (978) 249-1295
242 Green St
Gardner, MA 01440
Phone (978) 258-4734
250 Green St
Gardner, MA 01440
Phone (978) 630-5050
55 Hospital Dr
Winchendon, MA 01475
Phone (978) 297-2311
Interoperability endpoints
- kristy.grainger.1@192.direct.athenahealth.com
Organizations & group practices 4
Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.
-
dba Heywood Hospital
- General Acute Care Hospital
- Gardner, MA
- NPI 1205823879
Family
-
dba Heywood Hospital
- Psychiatric Hospital Unit
- Gardner, MA
- NPI 1457685299
Hospital & facility affiliations 5
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- Critical Access Hospital
- Athol, MA
- NPI 1336120047
-
- Home Health Agency
- Gardner, MA
- NPI 1477526705
-
dba Heywood Hospital
- General Acute Care Hospital
- Gardner, MA
- NPI 1205823879
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1596672000000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1778025600000",
"number": "1740890573",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "55 HOSPITAL DR",
"city": "WINCHENDON",
"state": "MA",
"postal_code": "014751899",
"telephone_number": "978-297-2311",
"fax_number": "978-297-4173"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "55 HOSPITAL DR",
"city": "WINCHENDON",
"state": "MA",
"postal_code": "014751820",
"telephone_number": "978-297-2311",
"fax_number": "978-297-4173"
}
],
"practiceLocations": [],
"basic": {
"last_name": "GRAINGER",
"first_name": "KRISTY",
"middle_name": "MARIE",
"credential": "FNP",
"sole_proprietor": "YES",
"sex": "F",
"enumeration_date": "2020-08-06",
"last_updated": "2026-05-06",
"certification_date": "2026-05-06",
"status": "A"
},
"taxonomies": [
{
"code": "363LF0000X",
"taxonomy_group": "",
"desc": "Nurse Practitioner, Family",
"state": "MA",
"license": "RN270461",
"primary": true
},
{
"code": "390200000X",
"taxonomy_group": "",
"desc": "Student in an Organized Health Care Education/Training Program",
"state": "MA",
"license": null,
"primary": false
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Winchendon, MA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 6, 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.