Holly Ann Desmarais, NP-C
Family Nurse Practitioner · Willimantic, CT
Holly Ann Desmarais, NP-C is a family nurse practitioner with a practice address in Willimantic, Connecticut, and NPI 1235533415, issued on Oct 16, 2014. Check the license (Connecticut 5956, as entered in NPPES) with the Connecticut board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Holly Ann Desmarais
- Credential
- NP-C
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License numbers
- 5956 CT
CNP161017 ME
Self-reported in NPPES; status is on the state search - Practice location
- 150 Mansfield Ave, Willimantic, CT 06226
- Phone
- (860) 423-3299
- Enumerated
- Oct 16, 2014
- Record last updated
- Jan 23, 2025
- Medicare enrollment
- Enrolled (PECOS I20150107001203); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 2,669 in Connecticut → Look up another NPI →
Also registered at 150 Mansfield Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Julie Bousquet, OTOccupational Therapist1780614313
- Janice Bryant, PTPhysical Therapist1851335244
- Erica ForsythePediatric Nurse Practitioner1740695766
- Jennifer Iacampo, PTPhysical Therapist1225221724
- Ajit Kokkat, M.D.Gastroenterology Physician1962438143
Verify Holly Ann Desmarais in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Connecticut board licenses this profession
Search for license 5956Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.9 times the Medicare Part D claims of the average family nurse practitioner in 2024
3,746 Medicare Part D claims for 476 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 61 claims were for opioids.
Most prescribed
- Atorvastatin Calcium231 claims
- Omeprazole181 claims
- Lisinopril153 claims
- Amlodipine Besylate128 claims
- Pantoprazole Sodium120 claims
- Rosuvastatin Calcium119 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.
Industry payments in 2024: $589.96
29 payments; by number, the most common kind was food and beverage; the largest payer was Takeda Pharmaceuticals U.S.A., Inc. The 99,489 providers of this specialty with any payment received $650.95 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.
Bills Medicare through one group practice
- Connecticut GI PLLCNorwich, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Holly Ann Desmarais among 2,669 family nurse practitioner records in Connecticut
Holly Ann Desmarais, NP-C is one of 2,669 family nurse practitioner records with a practice address in Connecticut. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 29% of them.
- NPI issued2014 · 29% of these records are older, 67% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2014 · median 2018 among the 1,664 with a school on file
- Record last updated2025 · 43% 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 Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
17 family nurse practitioner records list a practice address in Willimantic
They are 17 of the 487 NPPES records with a practice address in Willimantic, and 2,669 family nurse practitioner records in Connecticut.
All 2,669 in Connecticut → Every provider in Willimantic → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Naida Arcenas, APRNWillimantic, CT 062261861456774
- Susie Bernado, NPWillimantic, CT 062261295244135
- Alisa Bray, APRNWillimantic, CT 062261720620065
- Jamie CharronWillimantic, CT 062261720569379
- Emmanuela Chery, NPWillimantic, CT 062261225534266
- Danielle Digeronimo, APRNWillimantic, CT 062261598070989
- Nicole Dukett, APRNWillimantic, CT 062261457610800
- Shaina Forte, FNPWillimantic, CT 062261467123687
Common questions
What is Holly Ann Desmarais, NP-C's NPI number?
Holly Ann Desmarais, NP-C's National Provider Identifier (NPI) is 1235533415, issued on Oct 16, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Holly Ann Desmarais, NP-C located?
The NPPES record lists a practice address at 150 Mansfield Ave, Willimantic, CT, 06226. Phone: (860) 423-3299. Providers update this record themselves, so call before visiting.
How can I verify Holly Ann Desmarais, NP-C's license?
NPPES lists Connecticut license number 5956, as entered by the provider. Search the Connecticut board that licenses this profession; the NPPES record confirms identity only.
How much does Holly Ann Desmarais, NP-C prescribe under Medicare Part D?
In 2024, Holly Ann Desmarais, NP-C had 3,746 Medicare Part D claims for 476 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
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.