Andrea Tieng, MD Inc
NPI 1013276575ActiveOrganization· Internal Medicine, Gastroenterology· Rancho Cucamonga, CA
Internal Medicine, Gastroenterology in Rancho Cucamonga, California, registered in NPPES in May 2012. The authorized official on file is Andrea S. Tieng, Md. Enrolled in Medicare as part b supplier - clinic/group practice.
Overview
| NPI | 1013276575 |
|---|---|
| Status | Active |
| Entity type | Organization |
| NPI issued | May 3, 2012 |
| Last updated in NPPES | Jul 4, 2026 |
| Certified by provider | Jul 4, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | A106477 | 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 Part B Supplier - Clinic/Group Practice (CA) |
|---|
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