Gina Sue Kwak, M.D.
NPI 1396742201ActiveIndividual· Internal Medicine, Gastroenterology· Great Neck, NY
Internal Medicine, Gastroenterology (M.D.) in Great Neck, New York, trained at New York Medical College (class of 1990). 399 Medicare patients in 2024, $225,995 paid; nearly all of their 768 Part D prescriptions were generic (91%). Abbvie Inc. was the largest of 11 companies reporting payments in 2025, $2,190 in all, mostly food and beverage.
Overview
| NPI | 1396742201 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 7, 2005 |
| Last updated in NPPES | Dec 16, 2009 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 187525 | NY |
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 (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 399 |
|---|---|
| Services billed | 5,591 across 22 procedure codes |
| Paid by Medicare | $225,995 |
Part D prescriptions in 2024
| Prescriptions (claims) | 768 · 1,452 30-day fills |
|---|---|
| Patients | 216 |
| Total drug cost | $116,662 |
| Generic share | 91% of claims |
Education and affiliations
| Medical school | New York Medical College |
|---|---|
| Graduation year | 1990 |
| Medicare specialty | Gastroenterology |
| Telehealth | Offers telehealth |
Medical group
- Digestive Healthcare Associates PCGreat Neck, NY · 16 clinicians
Hospital affiliation
- North Shore University HospitalManhasset, NY
Industry payments (Open Payments)
- 2025$2,190 · 122 payments from 11 companies
- 2024$2,115 · 98 payments from 17 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $606.97 | 31 |
| Madrigal Pharmaceuticals | $303.56 | 12 |
| Lilly USA, LLC | $285.24 | 20 |
| Janssen Biotech, Inc. | $242.39 | 16 |
| Pfizer Inc. | $216.35 | 13 |
What the 2025 payments were for
- Food and Beverage$2,170 · 121 payments
- Grant$20.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 34 gastroenterologists in Great Neck · All gastroenterologists in New York