David R. Marks, M.D.
NPI 1841486149ActiveIndividual· Internal Medicine· Ansonia, CT
Internal Medicine (M.D.) in Ansonia, Connecticut, trained at Yale University School of Medicine (class of 1984). Their prescriptions cost Medicare Part D more than their services did: $651,189 for 6,856 claims, against $65,798 paid for services in 2024. Abbvie Inc. was the largest of 7 companies reporting payments in 2025, $573.36 in all, mostly food and beverage.
Overview
| NPI | 1841486149 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Sep 20, 2007 |
| Last updated in NPPES | Dec 7, 2020 |
| Certified by provider | Dec 7, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 032912 | CT |
| Preventive Medicine, Addiction Medicine | 2083A0300X | 032912 | CT |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 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 | 210 |
|---|---|
| Services billed | 1,093 across 35 procedure codes |
| Paid by Medicare | $65,798 |
Part D prescriptions in 2024
| Prescriptions (claims) | 6,856 · 15,266 30-day fills |
|---|---|
| Patients | 730 |
| Total drug cost | $651,189 |
| Generic share | 87% of claims |
Education and affiliations
| Medical school | Yale University School of Medicine |
|---|---|
| Graduation year | 1984 |
| Medicare specialty | Internal Medicine |
Medical group
- Griffin Faculty Physicians IncDerby, CT · 134 clinicians
Hospital affiliation
- Griffin HospitalDerby, CT
Other facilities
- All About You Home Care ServicesHome health agency · Naugatuck, CT
- Elara CaringHome health agency · Rocky Hill, CT
Industry payments (Open Payments)
- 2025$573.36 · 33 payments from 7 companies
- 2024$1,018 · 55 payments from 10 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $222.83 | 18 |
| Novartis Pharmaceuticals Corporation | $124.05 | 5 |
| Glaxosmithkline, LLC. | $86.32 | 4 |
| Astrazeneca Pharmaceuticals LP | $78.70 | 3 |
| Exact Sciences Corporation | $26.23 | 1 |
What the 2025 payments were for
- Food and Beverage$573.36 · 33 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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