Tiffany Ngai, M.D.
NPI 1215378930ActiveIndividual· Internal Medicine, Infectious Disease· Santa Rosa, CA
Internal Medicine, Infectious Disease (M.D.) with Providence Medical Foundation, practicing in Santa Rosa, California. 256 Medicare patients in 2024, $119,806 paid; nearly all of their 354 Part D prescriptions were generic (97%). Lists Healdsburg Hospital and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1215378930 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 10, 2013 |
| Last updated in NPPES | Nov 9, 2021 |
| Certified by provider | Nov 9, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Infectious Disease Primary | 207RI0200X | A138387 | CA |
| Internal Medicine | 207R00000X | A138387 | CA |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
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 - Infectious Disease (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 256 |
|---|---|
| Services billed | 1,257 across 14 procedure codes |
| Paid by Medicare | $119,806 |
Part D prescriptions in 2024
| Prescriptions (claims) | 354 · 383 30-day fills |
|---|---|
| Patients | 62 |
| Total drug cost | $58,407 |
| Generic share | 97% of claims |
Education and affiliations
| Graduation year | 2013 |
|---|---|
| Medicare specialty | Infectious Disease |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Providence Medical FoundationVictorville, CA · 1,466 clinicians
Hospital affiliations
- Healdsburg HospitalHealdsburg, CA
- Petaluma Valley HospitalPetaluma, CA
- Providence Santa Rosa Memorial HospitalSanta Rosa, CA
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other infectious disease specialists in Santa Rosa
- 1124102108
- 1518945658
- 1306180146
- 1841358975
- 1093873119
- 1326083213