Quick answers
- Which hospitals does Christopher R. Lieb work at?
- Medicare's official clinician data lists Christopher R. Lieb at 1 hospital: Ascension SE Wisconsin Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Christopher R. Lieb see patients?
- Medicare's clinician data lists 1 practice location in Brookfield, WI. Call before your visit to confirm the address.
- What is Christopher R. Lieb's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Christopher R. Lieb accept Medicare assignment?
- Yes. Medicare's clinician data says Christopher R. Lieb 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 Christopher R. Lieb?
- (262) 780-4111, as listed in official Medicare / NPI Registry data.
- What is Christopher R. Lieb's NPI number?
- 1427071240. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Christopher R. Lieb works
Medicare's Facility Affiliation Data lists Christopher R. Lieb at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Ascension SE Wisconsin HospitalMilwaukee, WI · Acute Care Hospital · CCN 520136
Practice locations
Addresses where Christopher R. Lieb is enrolled with Medicare (CMS data updated 2026-10-02).
- 19333 W N AveBrookfield, WI 53045 (262) 780‑4111
Group practices
Medicare enrollment lists Christopher R. Lieb as a member of this group (CMS data updated 2026-10-02).
- Ascension Medical Group-Southeast Wisconsin Inc545 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Brookfield
Clinicians with the same Medicare primary specialty in Brookfield, WI — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Wisconsin School Of Medicine |
| Graduation year | 2000 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1427071240 |
| 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