Quick answers
- Where does Mary Ellen O'Connor see patients?
- Medicare's clinician data lists 1 practice location in Chicago, IL. Call before your visit to confirm the address.
- What is Mary Ellen O'Connor's specialty?
- Medicare lists Occupational Therapist in Private Practice as the primary specialty.
- Does Mary Ellen O'Connor accept Medicare assignment?
- Yes. Medicare's clinician data says Mary Ellen O'Connor 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 Mary Ellen O'Connor?
- (312) 996-6695, as listed in official Medicare / NPI Registry data.
- What is Mary Ellen O'Connor's NPI number?
- 1780064246. 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 Mary Ellen O'Connor is enrolled with Medicare (CMS data updated 2026-10-02).
- 1640 W Roosevelt, Room 336 Mc628Chicago, IL 60606 (312) 996‑6695
Group practices
Medicare enrollment lists Mary Ellen O'Connor as a member of this group (CMS data updated 2026-10-02).
- The Board of Trustees of the University of Illinois1,150 clinicians in the group
Specialties
Find other clinicians: Occupational Therapist in Private Practice, Illinois →
Other occupational therapists in Chicago
Clinicians with the same Medicare primary specialty in Chicago, IL — not a recommendation.
Clinician information
| Credential | OT |
|---|---|
| Graduation year | 2012 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1780064246 |
| 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