Olivia Zessemos, APN-FNP
NPI 1821564923ActiveIndividual· Nurse Practitioner· Elgin, IL
Nurse Practitioner (APN-FNP) with Advocate Health and Hospitals Corporation, practicing in Elgin, Illinois. 72 Medicare patients in 2024, $14,856 paid; nearly all of their 321 Part D prescriptions were generic (91%). Novo Nordisk Inc reported $43.22 in payments in 2025, mostly food and beverage. Lists Advocate Sherman Hospital as a hospital affiliation.
Overview
| NPI | 1821564923 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | APN-FNP |
| Sole proprietor | No |
| NPI issued | Oct 17, 2018 |
| Last updated in NPPES | Jun 16, 2022 |
| Certified by provider | Jun 16, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | 209.018385 | 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 | 72 |
|---|---|
| Services billed | 216 across 29 procedure codes |
| Paid by Medicare | $14,856 |
Part D prescriptions in 2024
| Prescriptions (claims) | 321 · 682 30-day fills |
|---|---|
| Patients | 91 |
| Total drug cost | $11,244 |
| Generic share | 91% of claims |
Education and affiliations
| Graduation year | 2017 |
|---|---|
| Medicare specialty | Nurse Practitioner |
| Telehealth | Offers telehealth |
Medical group
- Advocate Health and Hospitals CorporationChicago, IL · 3,118 clinicians
Hospital affiliation
- Advocate Sherman HospitalElgin, IL
Other facilities
- Advocate Home Health Care ServHome health agency · Oakbrook, IL
Industry payments (Open Payments)
- 2025$43.22 · 2 payments from 1 company
- 2024$98.16 · 4 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $43.22 | 2 |
What the 2025 payments were for
- Food and Beverage$43.22 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 47 nurse practitioners in Elgin · All nurse practitioners in Illinois