Richard S. Zelkowitz, M.D.
NPI 1891780805ActiveIndividual· Internal Medicine, Hematology & Oncology· Norwalk, CT
Internal Medicine, Hematology & Oncology (M.D.) in Norwalk, Connecticut, trained at New York Medical College (class of 1983). Their prescriptions cost Medicare Part D more than their services did: $2,204,827 for 725 claims, against $110,046 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 9 companies reporting payments in 2025, $8,946 in all, mostly consulting fees.
Overview
| NPI | 1891780805 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Sep 15, 2005 |
| Last updated in NPPES | Apr 12, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 029798 | 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 - Hematology/Oncology (CT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 407 |
|---|---|
| Services billed | 1,980 across 18 procedure codes |
| Paid by Medicare | $110,046 |
Part D prescriptions in 2024
| Prescriptions (claims) | 725 · 1,237 30-day fills |
|---|---|
| Patients | 184 |
| Total drug cost | $2,204,827 |
| Generic share | 78% of claims |
Education and affiliations
| Medical school | New York Medical College |
|---|---|
| Graduation year | 1983 |
| Medicare specialty | Hematology/Oncology |
| Telehealth | Offers telehealth |
Medical group
- Hartford Healthcare Medical Group Specialists PLLCBridgeport, CT · 1,588 clinicians
Hospital affiliations
- Norwalk HospitalNorwalk, CT
- St Vincent's Medical CenterBridgeport, CT
- Stamford HospitalStamford, CT
Industry payments (Open Payments)
- 2025$8,946 · 29 payments from 9 companies
- 2024$4,629 · 21 payments from 12 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $3,609 | 9 |
| Genentech USA, Inc. | $2,149 | 3 |
| Pfizer Inc. | $1,300 | 1 |
| Eli Lilly and Company | $1,000 | 1 |
| Gilead Sciences, Inc. | $764.59 | 9 |
What the 2025 payments were for
- Consulting Fee$8,120 · 5 payments
- Food and Beverage$803.12 · 23 payments
- Education$22.50 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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