Callie Jean Grenier, FNP-C
NPI 1275099723ActiveIndividual· Nurse Practitioner, Family· Chelmsford, MA
Nurse Practitioner, Family (FNP-C) with New England Community Medical Services PLLC and 1 other group, practicing in Chelmsford, Massachusetts. In 2024 Medicare paid $176,609 for 484 patients, and Part D covered 816 of their prescriptions, 84% of them generic. Acadia Pharmaceuticals Inc reported $18.80 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1275099723 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | FNP-C |
| Sole proprietor | No |
| NPI issued | Feb 20, 2019 |
| Last updated in NPPES | May 28, 2025 |
| Certified by provider | May 28, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Family Primary | 363LF0000X | RN2260921 | MA |
| Nurse Practitioner, Family | 363LF0000X | 061024-23 | NH |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Nurse Practitioner (MA); Practitioner - Nurse Practitioner (NH) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 484 |
|---|---|
| Services billed | 2,151 across 9 procedure codes |
| Paid by Medicare | $176,609 |
Part D prescriptions in 2024
| Prescriptions (claims) | 816 · 821 30-day fills |
|---|---|
| Patients | 171 |
| Total drug cost | $40,297 |
| Generic share | 84% of claims |
Education and affiliations
| Graduation year | 2018 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical groups
- New England Community Medical Services PLLCChelmsford, MA · 55 clinicians
- Lawrence General Community Medical Service PLLCChelmsford, MA · 52 clinicians
Industry payments (Open Payments)
- 2025$18.80 · 1 payment from 1 company
- 2024$146.40 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Acadia Pharmaceuticals Inc | $18.80 | 1 |
What the 2025 payments were for
- Food and Beverage$18.80 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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