Robert A. Grillo Jr., M.D.
NPI 1770565566ActiveIndividual· Psychiatry & Neurology, Psychiatry· Groton, CT
Psychiatry & Neurology, Psychiatry (M.D.) with The William W Backus Hospital, practicing in Groton, Connecticut. Their prescriptions cost Medicare Part D more than their services did: $432,405 for 1,960 claims, against $14,634 paid for services in 2024. Axsome Therapeutics, Inc. was the largest of 7 companies reporting payments in 2025, $282.92 in all, mostly food and beverage. Lists William W Backus Hospital as a hospital affiliation.
Overview
| NPI | 1770565566 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Nov 17, 2005 |
| Last updated in NPPES | Jun 20, 2023 |
| Certified by provider | Jun 20, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Psychiatry Primary | 2084P0800X | 26488 | CT |
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 - Psychiatry (CT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 39 |
|---|---|
| Services billed | 205 across 4 procedure codes |
| Paid by Medicare | $14,634 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,960 · 2,450 30-day fills |
|---|---|
| Patients | 108 |
| Total drug cost | $432,405 |
| Generic share | 95% of claims |
Education and affiliations
| Graduation year | 1983 |
|---|---|
| Medicare specialty | Psychiatry |
Medical group
- The William W Backus HospitalNorwich, CT · 249 clinicians
Hospital affiliation
- William W Backus HospitalNorwich, CT
Industry payments (Open Payments)
- 2025$282.92 · 9 payments from 7 companies
- 2024$259.73 · 10 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Axsome Therapeutics, Inc. | $82.59 | 1 |
| E.R. Squibb & Sons, L.L.C. | $55.07 | 2 |
| Otsuka America Pharmaceutical, Inc. | $42.51 | 2 |
| Neurocrine Biosciences, Inc. | $38.41 | 1 |
| Janssen Pharmaceuticals, Inc | $33.85 | 1 |
What the 2025 payments were for
- Food and Beverage$282.92 · 9 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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