Mazin Fattouhi, M.D.
NPI 1639519309ActiveIndividual· Internal Medicine· Long Grove, IL
Internal Medicine (M.D.) with Best Practices Inpatient Care, Ltd., practicing in Long Grove, Illinois. 2,820 Medicare patients in 2024, $998,186 paid; nearly all of their 602 Part D prescriptions were generic (91%). Boston Scientific Corporation reported $39.44 in payments in 2025, mostly food and beverage. Lists Advocate Condell Medical Center and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1639519309 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 26, 2013 |
| Last updated in NPPES | Mar 7, 2023 |
| Certified by provider | Dec 19, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 036139567 | IL |
| Hospitalist | 208M00000X | 036139567 | IL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 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 | 2,820 |
|---|---|
| Services billed | 9,981 across 12 procedure codes |
| Paid by Medicare | $998,186 |
Part D prescriptions in 2024
| Prescriptions (claims) | 602 · 646 30-day fills |
|---|---|
| Patients | 255 |
| Total drug cost | $30,980 |
| Generic share | 91% of claims |
Education and affiliations
| Graduation year | 1988 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical group
- Best Practices Inpatient Care, Ltd.Barrington, IL · 82 clinicians
Hospital affiliations
- Advocate Condell Medical CenterLibertyville, IL
- Advocate Good Shepherd HospitalBarrington, IL
- Advocate Illinois Masonic Medical CenterChicago, IL
- Advocate Lutheran General HospitalPark Ridge, IL
- Northwest Community Hospital 1Arlington Heights, IL
Other facilities
- Advocate HospiceHospice · Oak Brook, IL
Industry payments (Open Payments)
- 2025$39.44 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boston Scientific Corporation | $39.44 | 1 |
What the 2025 payments were for
- Food and Beverage$39.44 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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