Gary Chen, M.D.
NPI 1720200132ActiveIndividual· Internal Medicine, Gastroenterology· Las Vegas, NV
Internal Medicine, Gastroenterology (M.D.) in Las Vegas, Nevada, trained at University of California, Geffen School of Medicine (class of 2004). Their prescriptions cost Medicare Part D more than their services did: $488,951 for 2,556 claims, against $142,984 paid for services in 2024. Abbvie Inc. was the largest of 17 companies reporting payments in 2025, $1,609 in all, mostly food and beverage.
Overview
| NPI | 1720200132 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 3, 2007 |
| Last updated in NPPES | Feb 21, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 13449 | NV |
| Internal Medicine, Gastroenterology | 207RG0100X | A965014 | CA |
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 (NV) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 540 |
|---|---|
| Services billed | 2,256 across 46 procedure codes |
| Paid by Medicare | $142,984 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,556 · 3,440 30-day fills |
|---|---|
| Patients | 924 |
| Total drug cost | $488,951 |
| Generic share | 82% of claims |
Education and affiliations
| Medical school | University of California, Geffen School of Medicine |
|---|---|
| Graduation year | 2004 |
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Kim Chen PLLCLas Vegas, NV · 18 clinicians
Hospital affiliations
- Cleveland Clinic Avon HospitalAvon, OH
- Spring Valley Hospital Medical CenterLas Vegas, NV
Industry payments (Open Payments)
- 2025$1,609 · 83 payments from 17 companies
- 2024$1,909 · 96 payments from 15 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $563.97 | 30 |
| Aimmune Therapeutics, Inc. | $235.92 | 12 |
| Janssen Biotech, Inc. | $183.12 | 13 |
| Pfizer Inc. | $113.35 | 5 |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $106.02 | 5 |
What the 2025 payments were for
- Food and Beverage$1,609 · 83 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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