Esther June Tow-Der, M.D.
NPI 1427008028ActiveIndividual· Obstetrics & Gynecology· Modesto, CA
Obstetrics & Gynecology (M.D.) in Modesto, California, trained at University of California, San Francisco School of Medicine (class of 1985). 96 Medicare patients in 2024, $23,761 paid; nearly all of their 106 Part D prescriptions were generic (92%). Organon LLC was the largest of 5 companies reporting payments in 2025, $79.24 in all, mostly food and beverage.
Overview
| NPI | 1427008028 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 12, 2006 |
| Last updated in NPPES | Feb 24, 2020 |
| Certified by provider | Feb 24, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Obstetrics & Gynecology Primary | 207V00000X | G58918 | 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 - Obstetrics/Gynecology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 96 |
|---|---|
| Services billed | 243 across 26 procedure codes |
| Paid by Medicare | $23,761 |
Part D prescriptions in 2024
| Prescriptions (claims) | 106 · 178 30-day fills |
|---|---|
| Patients | 45 |
| Total drug cost | $6,556 |
| Generic share | 92% of claims |
Education and affiliations
| Medical school | University of California, San Francisco School of Medicine |
|---|---|
| Graduation year | 1985 |
| Medicare specialty | Obstetrics/Gynecology |
Medical group
- Hera OB-GYN Medical Group IncModesto, CA · 6 clinicians
Hospital affiliation
- Memorial Medical CenterModesto, CA
Industry payments (Open Payments)
- 2025$79.24 · 5 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Organon LLC | $18.70 | 1 |
| Supernus Pharmaceuticals, Inc. | $15.93 | 1 |
| Sage Therapeutics, LLC | $15.93 | 1 |
| Bayer Healthcare Pharmaceuticals Inc. | $14.89 | 1 |
| Femselect Inc. | $13.79 | 1 |
What the 2025 payments were for
- Food and Beverage$79.24 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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