David J. Hass, M.D.
NPI 1225177769ActiveIndividual· Internal Medicine, Gastroenterology· Hamden, CT
Internal Medicine, Gastroenterology (M.D.) in Hamden, Connecticut, trained at Js Weill Medical College, Cornell University (class of 2001). Their prescriptions cost Medicare Part D more than their services did: $551,633 for 1,495 claims, against $67,861 paid for services in 2024. Medtronic, Inc. was the largest of 16 companies reporting payments in 2025, $7,429 in all, mostly speaking and faculty fees.
Overview
| NPI | 1225177769 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Feb 5, 2007 |
| Last updated in NPPES | May 27, 2021 |
| Certified by provider | May 27, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 045092 | 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 - Gastroenterology (CT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 327 |
|---|---|
| Services billed | 777 across 40 procedure codes |
| Paid by Medicare | $67,861 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,495 · 2,821 30-day fills |
|---|---|
| Patients | 445 |
| Total drug cost | $551,633 |
| Generic share | 82% of claims |
Education and affiliations
| Medical school | Js Weill Medical College, Cornell University |
|---|---|
| Graduation year | 2001 |
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Hhc Physician Services PLLCHamden, CT · 132 clinicians
Hospital affiliations
- Bridgeport HospitalBridgeport, CT
- Yale-New Haven HospitalNew Haven, CT
Industry payments (Open Payments)
- 2025$7,429 · 39 payments from 16 companies
- 2024$9,009 · 38 payments from 10 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Medtronic, Inc. | $6,569 | 4 |
| Abbvie Inc. | $273.85 | 15 |
| Takeda Pharmaceuticals U.S.A., Inc. | $108.74 | 4 |
| Conmed Corporation | $98.08 | 1 |
| Janssen Biotech, Inc. | $50.25 | 2 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$6,500 · 3 payments
- Food and Beverage$929.31 · 36 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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