Mai-Chi Marie-Florence Tieu, RN, NP
NPI 1679974539ActiveIndividual· Nurse Practitioner· San Francisco, CA
Nurse Practitioner (RN, NP) with Felton Institute, practicing in San Francisco, California. 45 Medicare patients in 2024, $28,813 paid; all of their 1,069 Part D prescriptions were generic.
Overview
| NPI | 1679974539 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | RN, NP |
| Sole proprietor | No |
| NPI issued | Sep 10, 2014 |
| Last updated in NPPES | Apr 17, 2026 |
| Certified by provider | Apr 17, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | NP95002927 | CA |
| Student in an Organized Health Care Education/Training Program | 390200000X | 809794 | CA |
| Registered Nurse | 163W00000X | 809794 | 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 Practitioner - Nurse Practitioner (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 45 |
|---|---|
| Services billed | 290 across 13 procedure codes |
| Paid by Medicare | $28,813 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,069 · 1,086 30-day fills |
|---|---|
| Patients | 58 |
| Total drug cost | $25,614 |
| Generic share | 100% of claims |
Education and affiliations
| Graduation year | 2015 |
|---|---|
| Medicare specialty | Nurse Practitioner |
| Telehealth | Offers telehealth |
Medical group
- Felton InstituteAlameda, CA · 14 clinicians
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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All 447 nurse practitioners in San Francisco · All nurse practitioners in California