David Quan Shih, MD
NPI 1992895601ActiveIndividual· Internal Medicine, Gastroenterology· Las Vegas, NV
Internal Medicine, Gastroenterology (MD) in Las Vegas, Nevada, trained at Js Weill Medical College, Cornell University (class of 2003). Their prescriptions cost Medicare Part D more than their services did: $503,781 for 2,387 claims, against $279,610 paid for services in 2024. Abbvie Inc. was the largest of 13 companies reporting payments in 2025, $1,810 in all, mostly food and beverage.
Overview
| NPI | 1992895601 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Oct 13, 2006 |
| Last updated in NPPES | Dec 27, 2021 |
| Certified by provider | Dec 27, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 16811 | NV |
| Internal Medicine, Gastroenterology | 207RG0100X | A87912 | CA |
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 (CA); Practitioner - Gastroenterology (NV) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 933 |
|---|---|
| Services billed | 4,157 across 46 procedure codes |
| Paid by Medicare | $279,610 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,387 · 4,987 30-day fills |
|---|---|
| Patients | 1,032 |
| Total drug cost | $503,781 |
| Generic share | 77% of claims |
Education and affiliations
| Medical school | Js Weill Medical College, Cornell University |
|---|---|
| Graduation year | 2003 |
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Enloe Medical CenterChico, CA · 333 clinicians
- Kim Chen PLLCLas Vegas, NV · 18 clinicians
Hospital affiliations
- Enloe HealthChico, CA
- Henderson HospitalHenderson, NV
- Saint Rose Dominican Hospitals - Siena CampusHenderson, NV
- Southern Hills Hospital and Medical CenterLas Vegas, NV
- West Henderson HospitalHenderson, NV
Industry payments (Open Payments)
- 2025$1,810 · 100 payments from 13 companies
- 2024$2,808 · 133 payments from 21 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $592.18 | 34 |
| Aimmune Therapeutics, Inc. | $321.75 | 17 |
| Janssen Biotech, Inc. | $200.43 | 16 |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $156.47 | 8 |
| Takeda Pharmaceuticals U.S.A., Inc. | $113.51 | 5 |
What the 2025 payments were for
- Food and Beverage$1,810 · 100 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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