Esther Margaret Molnar, MD
NPI 1831456896ActiveIndividual· Internal Medicine, Infectious Disease· Walnut Creek, CA
Internal Medicine, Infectious Disease (MD) in Walnut Creek, California, trained at George Washington University School of Medicine (class of 2012). Their prescriptions cost Medicare Part D more than their services did: $485,421 for 148 claims, against $165,561 paid for services in 2024. Gilead Sciences, Inc. reported $28.95 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1831456896 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Apr 16, 2012 |
| Last updated in NPPES | Mar 3, 2025 |
| Certified by provider | Mar 3, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Infectious Disease Primary | 207RI0200X | A147419 | CA |
| Internal Medicine | 207R00000X | A147419 | 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 - Infectious Disease (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 477 |
|---|---|
| Services billed | 40,637 across 24 procedure codes |
| Paid by Medicare | $165,561 |
Part D prescriptions in 2024
| Prescriptions (claims) | 148 · 172 30-day fills |
|---|---|
| Patients | 29 |
| Total drug cost | $485,421 |
| Generic share | 64% of claims |
Education and affiliations
| Medical school | George Washington University School of Medicine |
|---|---|
| Graduation year | 2012 |
| Medicare specialty | Infectious Disease |
| Telehealth | Offers telehealth |
Medical groups
- Bass Medical GroupChico, CA · 291 clinicians
- John Muir Trauma Physicians Billing ServiceWalnut Creek, CA · 113 clinicians
Hospital affiliations
- John Muir Medical Center - Concord CampusConcord, CA
- John Muir Medical Center - Walnut Creek CampusWalnut Creek, CA
- Sutter Delta Medical CenterAntioch, CA
- Sutter Solano Medical CenterVallejo, CA
Industry payments (Open Payments)
- 2025$28.95 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Gilead Sciences, Inc. | $28.95 | 1 |
What the 2025 payments were for
- Food and Beverage$28.95 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Infectious Disease providers in Walnut Creek
- 1134145055
- 1366460081
- 1487686838
- 1376856757
- 1669791612
- 1790717049
- 1750433975
- 1801358775
- 1164050266
- 1437231537
- 1487843942
- 1295806289
All Internal Medicine, Infectious Disease providers in California →