Marissa Jane Casillo, FNP
NPI 1972251817ActiveIndividual· Nurse Practitioner, Family· Foxboro, MA
Nurse Practitioner, Family (FNP) in Foxboro, Massachusetts, licensed in MA, with an NPI issued in March 2022. Part D covered 1,233 prescriptions written in 2024, 62% of them generic. Tg Therapeutics, Inc. was the largest of 38 companies reporting payments in 2025, $22,113 in all, mostly speaking and faculty fees.
Overview
| NPI | 1972251817 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | FNP |
| Sole proprietor | No |
| NPI issued | Mar 10, 2022 |
| Last updated in NPPES | Jun 12, 2026 |
| Certified by provider | Jun 12, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Family Primary | 363LF0000X | RN2273512 | MA |
| Nurse Practitioner, Family | 363LF0000X | F03210086 | MA |
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 (MA) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 1,233 · 1,658 30-day fills |
|---|---|
| Patients | 171 |
| Total drug cost | $1,209,682 |
| Generic share | 62% of claims |
Industry payments (Open Payments)
- 2025$22,113 · 219 payments from 38 companies
- 2024$3,785 · 143 payments from 32 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Tg Therapeutics, Inc. | $8,835 | 22 |
| Pfizer Inc. | $6,446 | 22 |
| Abbvie Inc. | $3,219 | 26 |
| Emd Serono, Inc. | $1,041 | 43 |
| Lundbeck LLC | $599.72 | 17 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$15,206 · 12 payments
- Food and Beverage$5,104 · 201 payments
- Travel and Lodging$1,128 · 5 payments
- Consulting Fee$675.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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