Daniel Paul Stupak, M.D.
NPI 1669664314ActiveIndividual· Internal Medicine, Gastroenterology· Trumbull, CT
Internal Medicine, Gastroenterology (M.D.) in Trumbull, Connecticut, trained at Albert Einstein College of Medicine of Yeshiva University (class of 2004). Their prescriptions cost Medicare Part D more than their services did: $364,027 for 1,162 claims, against $43,675 paid for services in 2024. Phathom Pharmaceuticals, Inc. was the largest of 22 companies reporting payments in 2025, $8,161 in all, mostly food and beverage.
Overview
| NPI | 1669664314 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Aug 16, 2007 |
| Last updated in NPPES | Aug 6, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 045783 | CT |
| Internal Medicine | 207R00000X | 245703 | NY |
| Internal Medicine | 207R00000X | 045783 | 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 | 267 |
|---|---|
| Services billed | 466 across 23 procedure codes |
| Paid by Medicare | $43,675 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,162 · 2,235 30-day fills |
|---|---|
| Patients | 336 |
| Total drug cost | $364,027 |
| Generic share | 71% of claims |
Education and affiliations
| Medical school | Albert Einstein College of Medicine of Yeshiva University |
|---|---|
| Graduation year | 2004 |
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Rehabilitation Associates IncFairfield, CT · 529 clinicians
- Connecticut Gi PLLCWallingford, CT · 248 clinicians
Hospital affiliations
- Bridgeport HospitalBridgeport, CT
- Griffin HospitalDerby, CT
- St Vincent's Medical CenterBridgeport, CT
Industry payments (Open Payments)
- 2025$8,161 · 179 payments from 22 companies
- 2024$11,160 · 150 payments from 18 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Phathom Pharmaceuticals, Inc. | $4,304 | 14 |
| Abbvie Inc. | $801.66 | 26 |
| Takeda Pharmaceuticals U.S.A., Inc. | $602.36 | 25 |
| Ipsen Biopharmaceuticals, Inc | $457.80 | 16 |
| Janssen Biotech, Inc. | $289.16 | 12 |
What the 2025 payments were for
- Food and Beverage$4,291 · 177 payments
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$3,870 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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