Esther Vinolia Koilpillai
NPI 1609337252ActiveIndividual· Nurse Practitioner, Family· Rockville, MD
Nurse Practitioner, Family with Adventist Physician Services Inc, practicing in Rockville, Maryland. Their prescriptions cost Medicare Part D more than their services did: $35,671 for 264 claims, against $21,216 paid for services in 2024. Novo Nordisk Inc was the largest of 11 companies reporting payments in 2025, $453.93 in all, mostly food and beverage. Lists Adventist Healthcare White Oak Medical Center as a hospital affiliation.
Overview
| NPI | 1609337252 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | No |
| NPI issued | Mar 27, 2019 |
| Last updated in NPPES | Aug 17, 2021 |
| Certified by provider | Aug 17, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Family Primary | 363LF0000X | R159636 | MD |
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 (DC) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 240 |
|---|---|
| Services billed | 423 across 15 procedure codes |
| Paid by Medicare | $21,216 |
Part D prescriptions in 2024
| Prescriptions (claims) | 264 · 704 30-day fills |
|---|---|
| Patients | 74 |
| Total drug cost | $35,671 |
| Generic share | 87% of claims |
Education and affiliations
| Graduation year | 2018 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Adventist Physician Services IncSilver Spring, MD · 148 clinicians
Hospital affiliation
- Adventist Healthcare White Oak Medical CenterSilver Spring, MD
Industry payments (Open Payments)
- 2025$453.93 · 21 payments from 11 companies
- 2024$725.87 · 29 payments from 15 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $103.06 | 4 |
| Zoll Services LLC (A/K/A Zoll Lifecor Corp) | $55.77 | 3 |
| E.R. Squibb & Sons, L.L.C. | $45.96 | 2 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $44.95 | 2 |
| Merck Sharp & Dohme LLC | $43.92 | 2 |
What the 2025 payments were for
- Food and Beverage$453.93 · 21 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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