Gisele M. Castonguay, NP
Nurse Practitioner · Lewiston, ME
Gisele M. Castonguay, NP is a nurse practitioner with a practice address in Lewiston, Maine, and NPI 1205089521, issued on Oct 30, 2008. Check the license (Maine CNP81961, as entered in NPPES) with the Maine board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Gisele M. Castonguay
- Credential
- NP
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License numbers
- CNP81961 ME
10051311 OR
Self-reported in NPPES; status is on the state search - Practice location
- 60 High St, Lewiston, ME 04240
- Phone
- (207) 795-2886
- Enumerated
- Oct 30, 2008
- Record last updated
- Nov 19, 2025
- Fax
- (207) 795-8280
- Medicare enrollment
- Enrolled (PECOS I20090117000072); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 450 in Maine → Look up another NPI →
Also registered at 60 High St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Beata Bajgierowicz, MDCardiovascular Disease Physician1093012726
- Michael Berlowitz, M.D.Interventional Cardiology Physician1902871817
- Stephen Buergin, PA-CSurgical Physician Assistant1790734861
- Elizabeth CloutierAcute Care Nurse Practitioner1891574042
- Jamie Dufour, PAPhysician Assistant1023176245
- Bryce EinhornInterventional Cardiology Physician1891140158
Verify Gisele M. Castonguay in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maine board licenses this profession
Search for license CNP81961Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average nurse practitioner in 2024
56 Medicare Part D claims for 25 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D.
Most prescribed
- Amoxicillin-Clavulanate Potass11 claims
- Clotrimazole-Betamethasone11 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): 77 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).
Industry payments in 2024: $12,762.83
19 payments; by number, the most common kind was food and beverage; the largest payer was Molnlycke Health Care US, LLC. The 38,884 providers of this specialty with any payment received $791.64 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
2 hospitals and group practices
- Central Maine Medical CenterLewiston, ME · Acute Care Hospitals4 of 5 stars
- Salem HealthSalem, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Gisele M. Castonguay among 450 nurse practitioner records in Maine
Gisele M. Castonguay, NP is one of 450 nurse practitioner records with a practice address in Maine. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 34% of them.
- NPI issued2008 · 34% of these records are older, 64% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2008 · median 2017 among the 258 with a school on file
- Record last updated2025 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
30 nurse practitioner records list a practice address in Lewiston
They are 30 of the 1,728 NPPES records with a practice address in Lewiston, and 450 nurse practitioner records in Maine.
All 450 in Maine → Every provider in Lewiston → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Miriam Charette, APRNLewiston, ME 042401205931201
- Kathleen Coleman, NPLewiston, ME 042401568425957
- Janet Cutter, FNPLewiston, ME 042401518914571
- Mary Ellen DavisLewiston, ME 042401215917919
- Barbara GervaisLewiston, ME 042401679553655
- Jennifer Kimball, NPLewiston, ME 042401902871205
- Rosanne Marquis, NPLewiston, ME 042401366575284
- Jane MarshLewiston, ME 042401316926520
Common questions
What is Gisele M. Castonguay, NP's NPI number?
Gisele M. Castonguay, NP's National Provider Identifier (NPI) is 1205089521, issued on Oct 30, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Gisele M. Castonguay, NP located?
The NPPES record lists a practice address at 60 High St, Lewiston, ME, 04240. Phone: (207) 795-2886. Providers update this record themselves, so call before visiting.
How can I verify Gisele M. Castonguay, NP's license?
NPPES lists Maine license number CNP81961, as entered by the provider. Search the Maine board that licenses this profession; the NPPES record confirms identity only.
How much does Gisele M. Castonguay, NP prescribe under Medicare Part D?
In 2024, Gisele M. Castonguay, NP had 56 Medicare Part D claims for 25 beneficiaries; the average among nurse practitioner prescribers was 1,109. Part D covers Medicare prescriptions only.
What is Gisele M. Castonguay, NP's MIPS final score?
The 2023 MIPS final score is 77 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.