Quick answers
- Where does Brian J. Lenahan see patients?
- Medicare's clinician data lists 1 practice location in Glen Ellyn, IL. Call before your visit to confirm the address.
- What is Brian J. Lenahan's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does Brian J. Lenahan accept Medicare assignment?
- Yes. Medicare's clinician data says Brian J. Lenahan accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Brian J. Lenahan?
- (630) 384-6200, as listed in official Medicare / NPI Registry data.
- What is Brian J. Lenahan's NPI number?
- 1053462788. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Brian J. Lenahan is enrolled with Medicare (CMS data updated 2026-10-02).
- 885 Roosevelt Rd, Suite 100Glen Ellyn, IL 60137 (630) 384‑6200
Group practices
Medicare enrollment lists Brian J. Lenahan as a member of this group (CMS data updated 2026-10-02).
- Northwestern Medical Faculty Foundation4,503 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Glen Ellyn
Clinicians with the same Medicare primary specialty in Glen Ellyn, IL — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Midwestern University, Chicago College Of Osteopathic Med |
| Graduation year | 2003 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1053462788 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians