Mohammed Tajammul Hussain, M.D
NPI 1356427256ActiveIndividual· Internal Medicine, Hematology & Oncology· Naperville, IL
Internal Medicine, Hematology & Oncology (M.D) with Insight Chicago Inc and 2 other groups, practicing in Naperville, Illinois. Their prescriptions cost Medicare Part D more than their services did: $1,148,879 for 604 claims, against $192,191 paid for services in 2024. Boehringer Ingelheim Pharmaceuticals, Inc. was the largest of 14 companies reporting payments in 2025, $635.38 in all, mostly food and beverage. Lists Insight Hospital and Medical Center Chicago and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1356427256 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D |
| Sole proprietor | Yes |
| NPI issued | Oct 31, 2006 |
| Last updated in NPPES | Apr 17, 2025 |
| Certified by provider | Apr 17, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 036-084973 | IL |
| General Acute Care Hospital | 282N00000X | 036-084973 | 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 | 393 |
|---|---|
| Services billed | 2,834 across 47 procedure codes |
| Paid by Medicare | $192,191 |
Part D prescriptions in 2024
| Prescriptions (claims) | 604 · 721 30-day fills |
|---|---|
| Patients | 130 |
| Total drug cost | $1,148,879 |
| Generic share | 77% of claims |
Education and affiliations
| Graduation year | 1987 |
|---|---|
| Medicare specialty | Hematology/Oncology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Insight Chicago IncChicago, IL · 141 clinicians
- Friedell Clinic, S. C.Chicago, IL · 24 clinicians
- South Chicago Oncology Associates LLCNorth Aurora, IL · 2 clinicians
Hospital affiliations
- Insight Hospital and Medical Center ChicagoChicago, IL
- Jackson Park HospitalChicago, IL
- Presence Mercy Medical CenterAurora, IL
- St Bernard HospitalChicago, IL
- Uchicago Medicine Adventhealth GlenoaksGlendale Heights, IL
Industry payments (Open Payments)
- 2025$635.38 · 28 payments from 14 companies
- 2024$564.92 · 22 payments from 11 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boehringer Ingelheim Pharmaceuticals, Inc. | $182.44 | 8 |
| Daiichi Sankyo Inc. | $80.74 | 3 |
| Novartis Pharmaceuticals Corporation | $66.28 | 3 |
| E.R. Squibb & Sons, L.L.C. | $53.27 | 3 |
| Pfizer Inc. | $43.95 | 2 |
What the 2025 payments were for
- Food and Beverage$635.38 · 28 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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