Justin Brian Gan, M.D.
NPI 1851549067ActiveIndividual· Internal Medicine, Rheumatology· Skokie, IL
Internal Medicine, Rheumatology (M.D.) in Skokie, Illinois, trained at Boston University School of Medicine (class of 2007). Their prescriptions cost Medicare Part D more than their services did: $1,748,281 for 3,353 claims, against $98,197 paid for services in 2024.
Overview
| NPI | 1851549067 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Aug 29, 2008 |
| Last updated in NPPES | Jul 29, 2026 |
| Certified by provider | Jul 29, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Rheumatology Primary | 207RR0500X | 036125595 | IL |
| Internal Medicine | 207R00000X | 076047 | 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 - Rheumatology (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 459 |
|---|---|
| Services billed | 1,760 across 26 procedure codes |
| Paid by Medicare | $98,197 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,353 · 7,053 30-day fills |
|---|---|
| Patients | 474 |
| Total drug cost | $1,748,281 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | Boston University School of Medicine |
|---|---|
| Graduation year | 2007 |
| Medicare specialty | Rheumatology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Endeavor Health Medical GroupEvanston, IL · 3,350 clinicians
Hospital affiliations
- Advocate Lutheran General HospitalPark Ridge, IL
- Northshore University Healthsystem - Evanston HospitalEvanston, IL
- Northwest Community Hospital 1Arlington Heights, IL
- Swedish HospitalChicago, IL
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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