Tiffanie Thy Do, M.D.
NPI 1194251710ActiveIndividual· Internal Medicine, Hematology & Oncology· Irvine, CA
Internal Medicine, Hematology & Oncology (M.D.) with Southern California Permanente Medical Group, practicing in Irvine, California. Their prescriptions cost Medicare Part D more than their services did: $1,365,349 for 655 claims, against $34,111 paid for services in 2024. Lists Kaiser Foundation Hospital - Orange County - Anaheim as a hospital affiliation.
Overview
| NPI | 1194251710 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 2, 2017 |
| Last updated in NPPES | Oct 27, 2023 |
| Certified by provider | Aug 23, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | A157687 | 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 - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 12 |
|---|---|
| Services billed | 2,188 across 31 procedure codes |
| Paid by Medicare | $34,111 |
Part D prescriptions in 2024
| Prescriptions (claims) | 655 · 1,018 30-day fills |
|---|---|
| Patients | 129 |
| Total drug cost | $1,365,349 |
| Generic share | 77% of claims |
Education and affiliations
| Graduation year | 2017 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical group
- Southern California Permanente Medical GroupRedlands, CA · 11,293 clinicians
Hospital affiliation
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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