Muhammad Hammad Tahir, M.D.
NPI 1609100429ActiveIndividual· Hospitalist· McHenry, IL
Hospitalist (M.D.) with Advance Inpatient Medicine LLC, practicing in McHenry, Illinois. 338 Medicare patients in 2024, $140,816 paid; nearly all of their 532 Part D prescriptions were generic (90%). Bayer Healthcare Pharmaceuticals Inc. was the largest of 3 companies reporting payments in 2025, $351.20 in all, mostly food and beverage. Lists Uchicago Medicine Adventhealth Bolingbrook and 1 other hospital as hospital affiliations.
Overview
| NPI | 1609100429 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Sep 25, 2009 |
| Last updated in NPPES | Jul 21, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Hospitalist Primary | 208M00000X | 036131069 | IL |
| Internal Medicine | 207R00000X | 036131069 | 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 - Internal Medicine (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 338 |
|---|---|
| Services billed | 1,593 across 14 procedure codes |
| Paid by Medicare | $140,816 |
Part D prescriptions in 2024
| Prescriptions (claims) | 532 · 559 30-day fills |
|---|---|
| Patients | 208 |
| Total drug cost | $19,799 |
| Generic share | 90% of claims |
Education and affiliations
| Graduation year | 2005 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical group
- Advance Inpatient Medicine LLCHinsdale, IL · 42 clinicians
Hospital affiliations
- Uchicago Medicine Adventhealth BolingbrookBolingbrook, IL
- Uchicago Medicine Adventhealth HinsdaleHinsdale, IL
Other facilities
- Uchicago Medicine Adventhealth Home CareHome health agency · La Grange, IL
Industry payments (Open Payments)
- 2025$351.20 · 6 payments from 3 companies
- 2024$23.83 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Bayer Healthcare Pharmaceuticals Inc. | $155.13 | 2 |
| Edwards Lifesciences Corporation | $140.95 | 1 |
| Abbott Laboratories | $55.12 | 3 |
What the 2025 payments were for
- Food and Beverage$351.20 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 35 hospitalists in McHenry · All hospitalists in Illinois