Marisa Tienyun Smith, MD
NPI 1447756259ActiveIndividual· Emergency Medicine· Redwood City, CA
Emergency Medicine (MD) in Redwood City, California, trained at Wright State University Boonshoft School of Medicine (class of 2018). 276 Medicare patients in 2024, $37,673 paid; nearly all of their 50 Part D prescriptions were generic (92%).
Overview
| NPI | 1447756259 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 2, 2018 |
| Last updated in NPPES | Jun 26, 2026 |
| Certified by provider | Jun 26, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Emergency Medicine Primary | 207P00000X | A185755 | 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 - Emergency Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 276 |
|---|---|
| Services billed | 327 across 25 procedure codes |
| Paid by Medicare | $37,673 |
Part D prescriptions in 2024
| Prescriptions (claims) | 50 · 55 30-day fills |
|---|---|
| Patients | 38 |
| Total drug cost | $567.57 |
| Generic share | 92% of claims |
Education and affiliations
| Medical school | Wright State University Boonshoft School of Medicine |
|---|---|
| Graduation year | 2018 |
| Medicare specialty | Emergency Medicine |
Medical groups
- Regents of the University of CaliforniaSan Diego, CA · 2,089 clinicians
- Regents of the University of CaliforniaEl Centro, CA · 45 clinicians
- Pacific Emergency Providers A Prof CorpSan Diego, CA · 24 clinicians
Hospital affiliations
- El Centro Regional Medical CenterEl Centro, CA
- Scripps Mercy HospitalSan Diego, CA
- Uc San Diego Health Hillcrest - Hillcrest Med CtrSan Diego, CA
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 40 emergency medicine physicians in Redwood City · All emergency medicine physicians in California