Maria Quejada, MD
NPI 1558348722ActiveIndividual· Internal Medicine, Hematology & Oncology· Naperville, IL
Internal Medicine, Hematology & Oncology (MD) with Endeavor Health Medical Group, practicing in Naperville, Illinois. Their prescriptions cost Medicare Part D more than their services did: $2,369,886 for 1,038 claims, against $109,074 paid for services in 2024. Celgene Corporation was the largest of 10 companies reporting payments in 2025, $407.41 in all, mostly food and beverage. Lists Edward Hospital and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1558348722 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Dec 28, 2005 |
| Last updated in NPPES | Apr 2, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 36100626 | 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 - Hematology/Oncology (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 337 |
|---|---|
| Services billed | 1,015 across 14 procedure codes |
| Paid by Medicare | $109,074 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,038 · 1,479 30-day fills |
|---|---|
| Patients | 185 |
| Total drug cost | $2,369,886 |
| Generic share | 68% of claims |
Education and affiliations
| Graduation year | 1995 |
|---|---|
| Medicare specialty | Hematology/Oncology |
Medical group
- Endeavor Health Medical GroupEvanston, IL · 3,350 clinicians
Hospital affiliations
- Edward HospitalNaperville, IL
- Elmhurst Memorial HospitalElmhurst, IL
- Swedish HospitalChicago, IL
Other facilities
- Residential Home HealthHome health agency · Lisle, IL
Industry payments (Open Payments)
- 2025$407.41 · 17 payments from 10 companies
- 2024$143.64 · 7 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Celgene Corporation | $111.13 | 4 |
| Janssen Biotech, Inc. | $75.67 | 3 |
| E.R. Squibb & Sons, L.L.C. | $37.72 | 2 |
| Merck Sharp & Dohme LLC | $36.52 | 2 |
| Pfizer Inc. | $28.39 | 1 |
What the 2025 payments were for
- Food and Beverage$407.41 · 17 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 16 hematologist-oncologists in Naperville · All hematologist-oncologists in Illinois