Diana Vandermast, FNP
Family Nurse Practitioner · Sangerville, ME
Diana Vandermast, FNP is a family nurse practitioner with a practice address in Sangerville, Maine, and NPI 1669423349, issued on May 15, 2006. Check the license (Maine R048203, as entered in NPPES) with the Maine board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Diana Vandermast
- Credential
- FNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- R048203 ME
Self-reported in NPPES; status is on the state search - Practice location
- 22 Haley CT, Sangerville, ME 04479
- Phone
- (207) 876-4811
- Enumerated
- May 15, 2006
- Record last updated
- Aug 31, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (207) 695-2329
- Medicaid IDs
- 432355199 ME
434805099 ME - Medicare enrollment
- Enrolled (PECOS I20060519000081); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 1,274 in Maine → Look up another NPI →
Also registered at 22 Haley CT
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Jason Perrin, DPTPhysical Therapist1720956378
- Shelly Roope, ARNPNurse Practitioner1487021259
- Sierra Valente, NPFamily Nurse Practitioner1740084383
Verify Diana Vandermast in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maine board licenses this profession
Search for license R048203Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% more Medicare Part D claims than the average family nurse practitioner in 2024
2,466 Medicare Part D claims for 224 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. 74 claims were for opioids.
Most prescribed
- Atorvastatin Calcium134 claims
- Lisinopril132 claims
- Amlodipine Besylate95 claims
- Metoprolol Succinate95 claims
- Gabapentin89 claims
- Omeprazole80 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 practice group's MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Mrh CorpDover Foxcroft, ME
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Diana Vandermast among 1,274 family nurse practitioner records in Maine
Diana Vandermast, FNP is one of 1,274 family nurse practitioner records with a practice address in Maine. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 2% of them.
- NPI issued2006 · 2% of these records are older, 81% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2004 · median 2018 among the 811 with a school on file
- Record last updated2015 · 46% 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 Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Family Nurse Practitioner providers in Maine
There are 1,274 family nurse practitioner records in Maine.
The 8 family nurse practitioner records with the nearest ZIP codes
- Nancy Honeychuck, FNPSangerville, ME 044791942353370
- Sierra Valente, NPSangerville, ME 044791740084383
- Leona Cerkovitz, FNPOrono, ME 044731073628376
- Jennifer Kennerk, FNPOrono, ME 044731982398897
- Jacqueline Carter, FNPOrland, ME 044721952560708
- Corinne Malenfant, FNP-BCOrland, ME 044721801569488
- Sean Sibley, FNPOrono, ME 044691730674599
- Sarah Somers, FNPOrono, ME 044691144830126
Common questions
What is Diana Vandermast, FNP's NPI number?
Diana Vandermast, FNP's National Provider Identifier (NPI) is 1669423349, issued on May 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Diana Vandermast, FNP located?
The NPPES record lists a practice address at 22 Haley CT, Sangerville, ME, 04479. Phone: (207) 876-4811. Providers update this record themselves, so call before visiting.
How can I verify Diana Vandermast, FNP's license?
NPPES lists Maine license number R048203, as entered by the provider. Search the Maine board that licenses this profession; the NPPES record confirms identity only.
How much does Diana Vandermast, FNP prescribe under Medicare Part D?
In 2024, Diana Vandermast, FNP had 2,466 Medicare Part D claims for 224 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
What is Diana Vandermast, FNP's MIPS final score?
The 2023 MIPS final score is 100 of 100, reported for the practice group. 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.