Diane Y. Bai, M.D.
NPI 1932145646ActiveIndividual· Internal Medicine, Gastroenterology· Tacoma, WA
Internal Medicine, Gastroenterology (M.D.) in Tacoma, Washington, licensed in WA, with an NPI issued in June 2006. Their prescriptions cost Medicare Part D more than their services did: $183,345 for 868 claims, against $62,151 paid for services in 2024.
Overview
| NPI | 1932145646 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 21, 2006 |
| Last updated in NPPES | Nov 6, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | MD00049108 | WA |
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) | Not in the public enrollment file of Oct 1, 2026 |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 346 |
|---|---|
| Services billed | 627 across 34 procedure codes |
| Paid by Medicare | $62,151 |
Part D prescriptions in 2024
| Prescriptions (claims) | 868 · 1,509 30-day fills |
|---|---|
| Patients | 387 |
| Total drug cost | $183,345 |
| Generic share | 85% of claims |
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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