Yizhou Ernst, D.O.
NPI 1174942569ActiveIndividual· Obstetrics & Gynecology, Gynecology· Reno, NV
Obstetrics & Gynecology, Gynecology (D.O.) with Mariko C Rajamand PLLC, practicing in Reno, Nevada. Their prescriptions cost Medicare Part D more than their services did: $46,359 for 407 claims, against $19,114 paid for services in 2024. Astellas Pharma US Inc was the largest of 9 companies reporting payments in 2025, $745.23 in all, mostly food and beverage. Lists Northern Nevada Medical Center and 1 other hospital as hospital affiliations.
Overview
| NPI | 1174942569 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | No |
| NPI issued | Apr 14, 2014 |
| Last updated in NPPES | Mar 16, 2023 |
| Certified by provider | Mar 16, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Obstetrics & Gynecology, Gynecology Primary | 207VG0400X | DO2352 | NV |
| Obstetrics & Gynecology | 207V00000X | DO2352 | NV |
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 - Obstetrics/Gynecology (NV) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 99 |
|---|---|
| Services billed | 211 across 25 procedure codes |
| Paid by Medicare | $19,114 |
Part D prescriptions in 2024
| Prescriptions (claims) | 407 · 743 30-day fills |
|---|---|
| Patients | 120 |
| Total drug cost | $46,359 |
| Generic share | 80% of claims |
Education and affiliations
| Graduation year | 2014 |
|---|---|
| Medicare specialty | Obstetrics/Gynecology |
Medical group
- Mariko C Rajamand PLLCReno, NV · 8 clinicians
Hospital affiliations
- Northern Nevada Medical CenterSparks, NV
- Renown Regional Medical CenterReno, NV
Industry payments (Open Payments)
- 2025$745.23 · 31 payments from 9 companies
- 2024$153.58 · 7 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astellas Pharma US Inc | $186.55 | 5 |
| Otsuka America Pharmaceutical, Inc. | $157.54 | 6 |
| Abbvie Inc. | $157.51 | 8 |
| Sumitomo Pharma America, Inc. | $72.42 | 3 |
| Avadel Cns Pharmaceuticals, LLC | $58.48 | 2 |
What the 2025 payments were for
- Food and Beverage$655.18 · 30 payments
- Education$90.05 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other gynecologists in Reno
- 1255714119
- 1730439845
- 1467561597
- 1922044437
- 1649777426
- 1063560506
- 1083929723
- 1144692179
- 1174792675
- 1194276709
- 1306975198
- 1316118946