Robert Dettmer, MD
NPI 1679648281ActiveIndividual· Internal Medicine, Gastroenterology· Stamford, CT
Internal Medicine, Gastroenterology (MD) in Stamford, Connecticut, trained at Albert Einstein College of Medicine of Yeshiva University (class of 1994). In 2024 Medicare paid $110,970 for 535 patients, and Part D covered 509 of their prescriptions, 87% of them generic. Abbvie Inc. was the largest of 21 companies reporting payments in 2025, $4,074 in all, mostly food and beverage.
Overview
| NPI | 1679648281 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Nov 21, 2006 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 038509 | 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 | 535 |
|---|---|
| Services billed | 1,006 across 25 procedure codes |
| Paid by Medicare | $110,970 |
Part D prescriptions in 2024
| Prescriptions (claims) | 509 · 890 30-day fills |
|---|---|
| Patients | 149 |
| Total drug cost | $111,826 |
| Generic share | 87% of claims |
Education and affiliations
| Medical school | Albert Einstein College of Medicine of Yeshiva University |
|---|---|
| Graduation year | 1994 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Connecticut Gi PLLCWallingford, CT · 248 clinicians
Hospital affiliation
- Stamford HospitalStamford, CT
Industry payments (Open Payments)
- 2025$4,074 · 174 payments from 21 companies
- 2024$3,359 · 147 payments from 23 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $654.82 | 28 |
| Takeda Pharmaceuticals U.S.A., Inc. | $579.23 | 21 |
| Janssen Biotech, Inc. | $394.78 | 15 |
| Madrigal Pharmaceuticals | $339.68 | 17 |
| Lilly USA, LLC | $244.37 | 12 |
What the 2025 payments were for
- Food and Beverage$4,074 · 174 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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