Nicholas Lillo, M.D.
NPI 1144482308ActiveIndividual· Internal Medicine, Gastroenterology· Fairfield, CT
Internal Medicine, Gastroenterology (M.D.) in Fairfield, Connecticut, trained at State University of New York Downstate Medical Center (class of 2007). Their prescriptions cost Medicare Part D more than their services did: $515,879 for 1,910 claims, against $89,360 paid for services in 2024. Takeda Pharmaceuticals U.S.A., Inc. was the largest of 20 companies reporting payments in 2025, $2,614 in all, mostly food and beverage.
Overview
| NPI | 1144482308 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Jun 30, 2008 |
| Last updated in NPPES | May 12, 2020 |
| Certified by provider | May 12, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 051628 | CT |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
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 - Gastroenterology (CT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 324 |
|---|---|
| Services billed | 2,718 across 39 procedure codes |
| Paid by Medicare | $89,360 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,910 · 3,271 30-day fills |
|---|---|
| Patients | 553 |
| Total drug cost | $515,879 |
| Generic share | 80% of claims |
Education and affiliations
| Medical school | State University of New York Downstate Medical Center |
|---|---|
| Graduation year | 2007 |
| Medicare specialty | Gastroenterology |
| Telehealth | Offers telehealth |
Medical group
- Connecticut Gi PLLCWallingford, CT · 248 clinicians
Hospital affiliation
- St Vincent's Medical CenterBridgeport, CT
Industry payments (Open Payments)
- 2025$2,614 · 124 payments from 20 companies
- 2024$2,398 · 125 payments from 17 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Takeda Pharmaceuticals U.S.A., Inc. | $462.22 | 18 |
| Abbvie Inc. | $415.93 | 19 |
| Janssen Biotech, Inc. | $368.91 | 12 |
| Ardelyx, Inc. | $272.19 | 15 |
| Pfizer Inc. | $172.18 | 10 |
What the 2025 payments were for
- Food and Beverage$2,614 · 124 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records