Quick answers
- Where does Leonard D. Elkun see patients?
- Medicare's clinician data lists 3 practice locations, including Chicago, IL. Call before your visit to confirm the address.
- What is Leonard D. Elkun's specialty?
- Medicare lists Psychiatry as the primary specialty, and also Geriatric Psychiatry.
- Does Leonard D. Elkun accept Medicare assignment?
- Yes. Medicare's clinician data says Leonard D. Elkun 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.
- Does Leonard D. Elkun offer telehealth?
- Medicare's clinician data says Leonard D. Elkun offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Leonard D. Elkun?
- (312) 943-8322, as listed in official Medicare / NPI Registry data.
- What is Leonard D. Elkun's NPI number?
- 1023129145. 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 Leonard D. Elkun is enrolled with Medicare (CMS data updated 2026-10-02).
- 411 W Ontario St, Apt 402Chicago, IL 60654 (312) 943‑8322
- 411 W Ontario St, Suite 402Chicago, IL 60610
- 411 W Ontario St, Suite 402Chicago, IL 60654
Specialties
- Psychiatryprimary
- Geriatric Psychiatryalso
Other psychiatrists in Chicago
Clinicians with the same Medicare primary specialty in Chicago, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1965 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1023129145 |
| 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