Kristy Marie Grainger, FNP
Family Nurse Practitioner · Winchendon, MA
Kristy Marie Grainger, FNP is a family nurse practitioner with a practice address in Winchendon, Massachusetts, and NPI 1740890573, issued on Aug 6, 2020. Check the license (Massachusetts RN270461, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Kristy Marie Grainger
- Credential
- FNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- RN270461 MA
Self-reported in NPPES; status is on the state search - Practice location
- 55 Hospital Dr, Winchendon, MA 01475
- Phone
- (978) 297-2311
- Enumerated
- Aug 6, 2020
- Record last updated
- May 6, 2026
- Fax
- (978) 297-4173
- Medicare enrollment
- Enrolled (PECOS I20201123001442); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 4,724 in Massachusetts → Look up another NPI →
Also registered at 55 Hospital Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- David Havlin, M.D.Family Medicine Physician1548231731
- Kavitha Kayathi, M.D.Family Medicine Physician1114160736
- Bethany Kullman-Duval, LICSWClinical Social Worker1831202142
- Monica MbuguaRegistered Nurse1821700493
Verify Kristy Marie Grainger in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license RN270461Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
6.1 times the Medicare Part D claims of the average family nurse practitioner in 2024
7,907 Medicare Part D claims for 499 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 364 claims were for opioids.
Most prescribed
- Atorvastatin Calcium411 claims
- Levothyroxine Sodium344 claims
- Lisinopril335 claims
- Gabapentin322 claims
- Amlodipine Besylate291 claims
- Omeprazole252 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 97 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- Athol Memorial Hospital IncorporatedAthol, MA
- Heywood Medical Group Inc.Gardner, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kristy Marie Grainger among 4,724 family nurse practitioner records in Massachusetts
Kristy Marie Grainger, FNP is one of 4,724 family nurse practitioner records with a practice address in Massachusetts. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 60% of them.
- NPI issued2020 · 60% of these records are older, 33% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2020 · median 2019 among the 2,704 with a school on file
- Record last updated2026 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
3 family nurse practitioner records list a practice address in Winchendon
They are 3 of the 45 NPPES records with a practice address in Winchendon, and 4,724 family nurse practitioner records in Massachusetts.
All 4,724 in Massachusetts → Every provider in Winchendon → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Renee Boucher, NPWinchendon, MA 014751699750034
- Carol Reich, FNP-BC, CPNPWinchendon, MA 014751366854481
- Amanda Eastman, NPWestminster, MA 014731275964892
- Holly West, FNP-CTownsend, MA 014691982212106
- Desire Huckfeldt KangsenShirley, MA 014641043775562
- Joan Kima-Tabong, NPShirley, MA 014641588004527
- Breanna DevinePepperell, MA 014631881494094
- Hannah Lawler, FNPPepperell, MA 014631790407138
Common questions
What is Kristy Marie Grainger, FNP's NPI number?
Kristy Marie Grainger, FNP's National Provider Identifier (NPI) is 1740890573, issued on Aug 6, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Kristy Marie Grainger, FNP located?
The NPPES record lists a practice address at 55 Hospital Dr, Winchendon, MA, 01475. Phone: (978) 297-2311. Providers update this record themselves, so call before visiting.
How can I verify Kristy Marie Grainger, FNP's license?
NPPES lists Massachusetts license number RN270461, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Kristy Marie Grainger, FNP prescribe under Medicare Part D?
In 2024, Kristy Marie Grainger, FNP had 7,907 Medicare Part D claims for 499 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
What is Kristy Marie Grainger, FNP's MIPS final score?
The 2023 MIPS final score is 97 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.