Marizthel Loyola Guiab, DNP, FNP-C
NPI 1720597990ActiveIndividual· Nurse Practitioner· Westchester, IL
Nurse Practitioner (DNP, FNP-C) in Westchester, Illinois, trained at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) (class of 2017). Their prescriptions cost Medicare Part D more than their services did: $1,557,468 for 1,450 claims, against $32,567 paid for services in 2024. Teva Pharmaceuticals USA, Inc. was the largest of 5 companies reporting payments in 2025, $9,764 in all, mostly speaking and faculty fees.
Overview
| NPI | 1720597990 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DNP, FNP-C |
| Sole proprietor | No |
| NPI issued | Sep 20, 2017 |
| Last updated in NPPES | Sep 20, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | 209016507 | 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 | 152 |
|---|---|
| Services billed | 480 across 4 procedure codes |
| Paid by Medicare | $32,567 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,450 · 1,454 30-day fills |
|---|---|
| Patients | 141 |
| Total drug cost | $1,557,468 |
| Generic share | 84% of claims |
Education and affiliations
| Medical school | University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) |
|---|---|
| Graduation year | 2017 |
| Medicare specialty | Nurse Practitioner |
Medical group
- Total Care Solutions, SCFlanagan, IL · 10 clinicians
Industry payments (Open Payments)
- 2025$9,764 · 20 payments from 5 companies
- 2024$7,211 · 22 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Teva Pharmaceuticals USA, Inc. | $9,362 | 15 |
| Otsuka America Pharmaceutical, Inc. | $128.17 | 2 |
| Neurocrine Biosciences, Inc. | $125.68 | 1 |
| E.R. Squibb & Sons, L.L.C. | $122.19 | 1 |
| Acadia Pharmaceuticals Inc | $26.67 | 1 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$8,447 · 4 payments
- Food and Beverage$775.90 · 9 payments
- Consulting Fee$330.00 · 1 payment
- Education$109.49 · 1 payment
- Travel and Lodging$102.10 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Nurse Practitioner providers in Westchester
- 1447704135
- 1497110597
- 1669771861
- 1164813515