Daniel Chakos, M.D.
NPI 1487034674ActiveIndividual· Internal Medicine, Hematology & Oncology· Hinsdale, IL
Internal Medicine, Hematology & Oncology (M.D.) in Hinsdale, Illinois, trained at Rush Medical College of Rush University (class of 2015). Their prescriptions cost Medicare Part D more than their services did: $2,475,314 for 726 claims, against $98,315 paid for services in 2024. Janssen Biotech, Inc. was the largest of 10 companies reporting payments in 2025, $479.18 in all, mostly food and beverage.
Overview
| NPI | 1487034674 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Jun 3, 2015 |
| Last updated in NPPES | Aug 26, 2021 |
| Certified by provider | Aug 26, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 036156926 | 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 | 350 |
|---|---|
| Services billed | 1,667 across 15 procedure codes |
| Paid by Medicare | $98,315 |
Part D prescriptions in 2024
| Prescriptions (claims) | 726 · 1,036 30-day fills |
|---|---|
| Patients | 142 |
| Total drug cost | $2,475,314 |
| Generic share | 66% of claims |
Education and affiliations
| Medical school | Rush Medical College of Rush University |
|---|---|
| Graduation year | 2015 |
| Medicare specialty | Hematology/Oncology |
Medical group
- Ahp Specialty Care NfpHinsdale, IL · 31 clinicians
Hospital affiliations
- Uchicago Medicine Adventhealth BolingbrookBolingbrook, IL
- Uchicago Medicine Adventhealth HinsdaleHinsdale, IL
- Uchicago Medicine Adventhealth la GrangeLa Grange, IL
Industry payments (Open Payments)
- 2025$479.18 · 16 payments from 10 companies
- 2024$200.26 · 10 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $155.98 | 2 |
| Merck Sharp & Dohme LLC | $63.22 | 3 |
| Astrazeneca Pharmaceuticals LP | $53.36 | 2 |
| Genentech USA, Inc. | $49.76 | 2 |
| Novartis Pharmaceuticals Corporation | $44.66 | 2 |
What the 2025 payments were for
- Food and Beverage$479.18 · 16 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 18 hematologist-oncologists in Hinsdale · All hematologist-oncologists in Illinois