Daniel Underhill
NPI 1083251490ActiveIndividual· Physician Assistant· Derby, CT
Physician Assistant with Mhs Primary Care, Inc. and 1 other group, practicing in Derby, Connecticut. 40 Medicare patients in 2024, $4,970 paid; nearly all of their 61 Part D prescriptions were generic (97%). Medtronic, Inc. was the largest of 2 companies reporting payments in 2025, $4,244 in all, mostly consulting fees. Lists Griffin Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1083251490 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | No |
| NPI issued | Dec 4, 2019 |
| Last updated in NPPES | Aug 13, 2025 |
| Certified by provider | Aug 13, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | 23.005285 | 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 - Physician Assistant (CT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 40 |
|---|---|
| Services billed | 58 across 27 procedure codes |
| Paid by Medicare | $4,970 |
Part D prescriptions in 2024
| Prescriptions (claims) | 61 · 61 30-day fills |
|---|---|
| Patients | 37 |
| Total drug cost | $184.79 |
| Generic share | 97% of claims |
Education and affiliations
| Graduation year | 2021 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical groups
- Mhs Primary Care, Inc.Essex, CT · 180 clinicians
- Griffin Faculty Physicians IncDerby, CT · 134 clinicians
Hospital affiliations
- Griffin HospitalDerby, CT
- Middlesex HospitalMiddletown, CT
Industry payments (Open Payments)
- 2025$4,244 · 9 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Medtronic, Inc. | $4,142 | 8 |
| Solventum Corporation | $101.82 | 1 |
What the 2025 payments were for
- Consulting Fee$3,900 · 5 payments
- Travel and Lodging$175.00 · 1 payment
- Food and Beverage$168.86 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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