Quick answers
- Which hospitals does Brett L. Ecker work at?
- Medicare's official clinician data lists Brett L. Ecker at 4 hospitals: Northwestern Lake Forest Hospital, Northwestern Medicine Central Dupage Hospital, Northwestern Medicine McHenry and Northwestern Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Brett L. Ecker see patients?
- Medicare's clinician data lists 1 practice location in Chicago, IL. Call before your visit to confirm the address.
- What is Brett L. Ecker's specialty?
- Medicare lists Surgical Oncology as the primary specialty.
- Does Brett L. Ecker accept Medicare assignment?
- Yes. Medicare's clinician data says Brett L. Ecker 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 Brett L. Ecker offer telehealth?
- Medicare's clinician data says Brett L. Ecker offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Brett L. Ecker?
- (312) 695-0990, as listed in official Medicare / NPI Registry data.
- What is Brett L. Ecker's NPI number?
- 1033554886. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Brett L. Ecker works
Medicare's Facility Affiliation Data lists Brett L. Ecker at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Northwestern Lake Forest HospitalLake Forest, IL · Acute Care Hospital · CCN 140130
- Northwestern Medicine Central Dupage HospitalWinfield, IL · Acute Care Hospital · CCN 140242
- Northwestern Medicine McHenryMcHenry, IL · Acute Care Hospital · CCN 140116
- Northwestern Memorial HospitalChicago, IL · Acute Care Hospital · CCN 140281
Practice locations
Addresses where Brett L. Ecker is enrolled with Medicare (CMS data updated 2026-10-02).
- 675 N St Clair, 100 Cancer Care CenterChicago, IL 60611 (312) 695‑0990
Group practices
Medicare enrollment lists Brett L. Ecker as a member of this group (CMS data updated 2026-10-02).
- Northwestern Medical Faculty Foundation4,503 clinicians in the group
Specialties
- Surgical Oncologyprimary
Other surgical oncologists in Chicago
Clinicians with the same Medicare primary specialty in Chicago, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2013 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1033554886 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- 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