Timothy D. Grinnell, PA-C
NPI 1790828119ActiveIndividual· Physician Assistant· Waltham, MA
Physician Assistant (PA-C) with Northeast Orthopaedic Alliance PLLC, practicing in Waltham, Massachusetts. 311 Medicare patients in 2024, $41,312 paid; nearly all of their 345 Part D prescriptions were generic (91%). Vertex Pharmaceuticals Incorporated was the largest of 2 companies reporting payments in 2025, $407.74 in all, mostly food and beverage. Lists Beth Israel Deaconess Hospital - Milton as a hospital affiliation.
Overview
| NPI | 1790828119 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Feb 15, 2007 |
| Last updated in NPPES | Nov 5, 2024 |
| Certified by provider | Nov 5, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | PA2274 | MA |
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 - Physician Assistant (MA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 311 |
|---|---|
| Services billed | 1,724 across 20 procedure codes |
| Paid by Medicare | $41,312 |
Part D prescriptions in 2024
| Prescriptions (claims) | 345 · 345 30-day fills |
|---|---|
| Patients | 169 |
| Total drug cost | $3,897 |
| Generic share | 91% of claims |
Education and affiliations
| Graduation year | 2006 |
|---|---|
| Medicare specialty | Physician Assistant |
| Telehealth | Offers telehealth |
Medical group
- Northeast Orthopaedic Alliance PLLCDedham, MA · 291 clinicians
Hospital affiliation
- Beth Israel Deaconess Hospital - MiltonMilton, MA
Other facilities
- Spaulding Rehabilitation HospitalInpatient rehabilitation facility · Charlestown, MA
Industry payments (Open Payments)
- 2025$407.74 · 6 payments from 2 companies
- 2024$132.18 · 2 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Vertex Pharmaceuticals Incorporated | $218.10 | 2 |
| Stryker Corporation | $189.64 | 4 |
What the 2025 payments were for
- Food and Beverage$407.74 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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