Maureen Sares Zamora, APN
NPI 1356816243ActiveIndividual· Nurse Practitioner, Primary Care· Naperville, IL
Nurse Practitioner, Primary Care (APN) with Suburban Gastroenterology Ltd, practicing in Naperville, Illinois. Their prescriptions cost Medicare Part D more than their services did: $298,738 for 1,414 claims, against $40,929 paid for services in 2024. Madrigal Pharmaceuticals was the largest of 2 companies reporting payments in 2025, $166.75 in all, mostly food and beverage. Lists Edward Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1356816243 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | APN |
| Sole proprietor | No |
| NPI issued | Oct 8, 2018 |
| Last updated in NPPES | Feb 11, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Primary Care Primary | 363LP2300X | 209.018738 | IL |
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 (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 342 |
|---|---|
| Services billed | 742 across 10 procedure codes |
| Paid by Medicare | $40,929 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,414 · 3,185 30-day fills |
|---|---|
| Patients | 490 |
| Total drug cost | $298,738 |
| Generic share | 77% of claims |
Education and affiliations
| Graduation year | 2018 |
|---|---|
| Medicare specialty | Nurse Practitioner |
| Telehealth | Offers telehealth |
Medical group
- Suburban Gastroenterology LtdNaperville, IL · 22 clinicians
Hospital affiliations
- Edward HospitalNaperville, IL
- Elmhurst Memorial HospitalElmhurst, IL
Industry payments (Open Payments)
- 2025$166.75 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Madrigal Pharmaceuticals | $140.54 | 1 |
| Janssen Biotech, Inc. | $26.21 | 1 |
What the 2025 payments were for
- Food and Beverage$166.75 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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