Mark S. Kasper, MD
NPI 1780648238ActiveIndividual· Internal Medicine· Branford, CT
Internal Medicine (MD) in Branford, Connecticut, trained at Yale University School of Medicine (class of 1981). Their prescriptions cost Medicare Part D more than their services did: $656,162 for 9,841 claims, against $248,970 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 13 companies reporting payments in 2025, $820.20 in all, mostly food and beverage.
Overview
| NPI | 1780648238 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 13, 2006 |
| Last updated in NPPES | Jun 11, 2026 |
| Certified by provider | Jun 11, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 024717 | 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 | 358 |
|---|---|
| Services billed | 4,825 across 34 procedure codes |
| Paid by Medicare | $248,970 |
Part D prescriptions in 2024
| Prescriptions (claims) | 9,841 · 24,017 30-day fills |
|---|---|
| Patients | 848 |
| Total drug cost | $656,162 |
| Generic share | 91% of claims |
Education and affiliations
| Medical school | Yale University School of Medicine |
|---|---|
| Graduation year | 1981 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Internal Medicine of East Haven PCBranford, CT · 3 clinicians
Hospital affiliations
- Bridgeport HospitalBridgeport, CT
- Midstate Medical CenterMeriden, CT
- Yale-New Haven HospitalNew Haven, CT
Other facilities
- Masters in Home Care, LLCHome health agency · Rocky Hill, CT
- Yale New Haven Health - Health at HomeHome health agency · Milford, CT
Industry payments (Open Payments)
- 2025$820.20 · 39 payments from 13 companies
- 2024$861.53 · 57 payments from 10 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $258.54 | 15 |
| Novo Nordisk Inc | $93.31 | 3 |
| Lilly USA, LLC | $88.87 | 4 |
| Pfizer Inc. | $71.19 | 3 |
| Almatica Pharma LLC | $61.59 | 3 |
What the 2025 payments were for
- Food and Beverage$820.20 · 39 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 33 internal medicine physicians in Branford · All internal medicine physicians in Connecticut