Joseph Mark Pruner, M.D.
NPI 1427493048ActiveIndividual· Internal Medicine· Waterbury, CT
Internal Medicine (M.D.) with Trinity Health of New England Provider Network Organization Inc and 1 other group, practicing in Waterbury, Connecticut. Their prescriptions cost Medicare Part D more than their services did: $1,918,112 for 14,816 claims, against $204,841 paid for services in 2024. Novo Nordisk Inc was the largest of 19 companies reporting payments in 2025, $1,227 in all, mostly food and beverage. Lists Saint Mary's Hospital as a hospital affiliation.
Overview
| NPI | 1427493048 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | May 9, 2013 |
| Last updated in NPPES | Oct 28, 2021 |
| Certified by provider | Oct 28, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 55238 | CT |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
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 - Internal Medicine (CT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 389 |
|---|---|
| Services billed | 4,626 across 35 procedure codes |
| Paid by Medicare | $204,841 |
Part D prescriptions in 2024
| Prescriptions (claims) | 14,816 · 31,612 30-day fills |
|---|---|
| Patients | 933 |
| Total drug cost | $1,918,112 |
| Generic share | 85% of claims |
Education and affiliations
| Graduation year | 2013 |
|---|---|
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Trinity Health of New England Provider Network Organization IncHartford, CT · 653 clinicians
- Ptsma IncAnsonia, CT · 224 clinicians
Hospital affiliation
- Saint Mary's HospitalWaterbury, CT
Other facilities
- Atrinity Home HealthHome health agency · Wallingford, CT
- Elara CaringHome health agency · Rocky Hill, CT
- Hartford Healthcare at HomeHome health agency · East Hartford, CT
- Trinity Health of New England at HomeHome health agency · Hartford, CT
- Uconn Health Community Network Home Health, Inc.Home health agency · Watertown, CT
Industry payments (Open Payments)
- 2025$1,227 · 53 payments from 19 companies
- 2024$4,655 · 236 payments from 23 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $213.35 | 9 |
| Bayer Healthcare Pharmaceuticals Inc. | $204.81 | 8 |
| Abbvie Inc. | $91.69 | 4 |
| Astrazeneca Pharmaceuticals LP | $87.33 | 4 |
| Merck Sharp & Dohme LLC | $82.51 | 4 |
What the 2025 payments were for
- Food and Beverage$1,227 · 53 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 134 internal medicine physicians in Waterbury · All internal medicine physicians in Connecticut