Mark A. Piekarsky, M.D.
NPI 1558355792ActiveIndividual· Internal Medicine· New Britain, CT
Internal Medicine (M.D.) in New Britain, Connecticut, trained at State University of New York at Stony Brook, School of Medicine (class of 1996). Their prescriptions cost Medicare Part D more than their services did: $1,019,888 for 9,937 claims, against $70,636 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 28 companies reporting payments in 2025, $3,216 in all, mostly food and beverage.
Overview
| NPI | 1558355792 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Sep 2, 2005 |
| Last updated in NPPES | Jul 9, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 037646 | 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 - Internal Medicine (CT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 251 |
|---|---|
| Services billed | 968 across 20 procedure codes |
| Paid by Medicare | $70,636 |
Part D prescriptions in 2024
| Prescriptions (claims) | 9,937 · 23,707 30-day fills |
|---|---|
| Patients | 850 |
| Total drug cost | $1,019,888 |
| Generic share | 87% of claims |
Education and affiliations
| Medical school | State University of New York at Stony Brook, School of Medicine |
|---|---|
| Graduation year | 1996 |
| Medicare specialty | Internal Medicine |
Medical group
- Starling Physicians, PLLCWethersfield, CT · 283 clinicians
Hospital affiliation
- The Hospital of Central ConnecticutNew Britain, CT
Other facilities
- Berlin Visiting Nurse AssociationHome health agency · Berlin, CT
- Hartford Healthcare at HomeHome health agency · East Hartford, CT
Industry payments (Open Payments)
- 2025$3,216 · 154 payments from 28 companies
- 2024$2,482 · 125 payments from 24 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $544.87 | 29 |
| Glaxosmithkline, LLC. | $324.45 | 16 |
| Abbvie Inc. | $235.16 | 6 |
| Otsuka America Pharmaceutical, Inc. | $229.34 | 7 |
| Pfizer Inc. | $189.17 | 9 |
What the 2025 payments were for
- Food and Beverage$3,216 · 154 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 82 internal medicine physicians in New Britain · All internal medicine physicians in Connecticut