Mary A. Merlo, APRN, CNP
NPI 1962892232ActiveIndividual· Nurse Practitioner· Orland Park, IL
Nurse Practitioner (APRN, CNP) with Northwestern Medical Faculty Foundation and 1 other group, practicing in Orland Park, Illinois. Their prescriptions cost Medicare Part D more than their services did: $247,054 for 5,510 claims, against $58,468 paid for services in 2024. Exact Sciences Corporation reported $169.60 in payments in 2025, mostly food and beverage. Lists Advocate Christ Hospital & Medical Center and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1962892232 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | APRN, CNP |
| Sole proprietor | No |
| NPI issued | Jan 26, 2015 |
| Last updated in NPPES | Sep 29, 2026 |
| Certified by provider | Dec 1, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | 277000500 | IL |
| Nurse Practitioner, Family | 363LF0000X | 277000500 | 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 | 408 |
|---|---|
| Services billed | 828 across 36 procedure codes |
| Paid by Medicare | $58,468 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,510 · 10,032 30-day fills |
|---|---|
| Patients | 652 |
| Total drug cost | $247,054 |
| Generic share | 91% of claims |
Education and affiliations
| Graduation year | 2013 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical groups
- Northwestern Medical Faculty FoundationChicago, IL · 4,503 clinicians
- Central Dupage Physician GroupGeneva, IL · 1,080 clinicians
Hospital affiliations
- Advocate Christ Hospital & Medical CenterOak Lawn, IL
- Northwestern Medicine Central Dupage HospitalWinfield, IL
- Palos Community HospitalPalos Heights, IL
Other facilities
- Palos Community Hospital Home Health CareHome health agency · Lemont, IL
Industry payments (Open Payments)
- 2025$169.60 · 2 payments from 1 company
- 2024$102.48 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Exact Sciences Corporation | $169.60 | 2 |
What the 2025 payments were for
- Food and Beverage$169.60 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other nurse practitioners in Orland Park
- 1043067028
- 1073023263
- 1083210678
- 1194398248
- 1275110751
- 1306310131
- 1356805386
- 1578984597
- 1699558874
- 1760256127
- 1760436109
- 1861514408
All 47 nurse practitioners in Orland Park · All nurse practitioners in Illinois