Holly Ann Desmarais, NP-C
NPI 1235533415ActiveIndividual· Nurse Practitioner, Family· Willimantic, CT
Nurse Practitioner, Family (NP-C) with Connecticut Gi PLLC, practicing in Willimantic, Connecticut. Their prescriptions cost Medicare Part D more than their services did: $390,054 for 3,746 claims, against $7,457 paid for services in 2024. Janssen Biotech, Inc. was the largest of 16 companies reporting payments in 2025, $2,474 in all, mostly food and beverage. Lists Day Kimball Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1235533415 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | NP-C |
| Sole proprietor | No |
| NPI issued | Oct 16, 2014 |
| Last updated in NPPES | Jan 23, 2025 |
| Certified by provider | Jan 23, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Family Primary | 363LF0000X | 5956 | CT |
| Nurse Practitioner, Family | 363LF0000X | CNP161017 | ME |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Nurse Practitioner (CT); Practitioner - Nurse Practitioner (ME) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 83 |
|---|---|
| Services billed | 91 across 6 procedure codes |
| Paid by Medicare | $7,457 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,746 · 8,598 30-day fills |
|---|---|
| Patients | 476 |
| Total drug cost | $390,054 |
| Generic share | 85% of claims |
Education and affiliations
| Graduation year | 2014 |
|---|---|
| Medicare specialty | Nurse Practitioner |
| Telehealth | Offers telehealth |
Medical group
- Connecticut Gi PLLCWallingford, CT · 248 clinicians
Hospital affiliations
- Day Kimball HospitalPutnam, CT
- Windham Community Memorial HospitalWillimantic, CT
Industry payments (Open Payments)
- 2025$2,474 · 91 payments from 16 companies
- 2024$589.96 · 29 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $645.36 | 18 |
| Abbvie Inc. | $543.45 | 20 |
| Ardelyx, Inc. | $253.68 | 11 |
| Phathom Pharmaceuticals, Inc. | $247.39 | 10 |
| Madrigal Pharmaceuticals | $228.21 | 8 |
What the 2025 payments were for
- Food and Beverage$2,380 · 89 payments
- Education$93.65 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 16 family nurse practitioners in Willimantic · All family nurse practitioners in Connecticut