Quick answers
- Which hospitals does Mark A. Sibul work at?
- Medicare's official clinician data lists Mark A. Sibul at 3 hospitals: Northshore University Healthsystem - Evanston Hospital, Northwestern Lake Forest Hospital and Northwestern Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark A. Sibul see patients?
- Medicare's clinician data lists 2 practice locations, including Evanston, IL and Palos Heights, IL. Call before your visit to confirm the address.
- What is Mark A. Sibul's specialty?
- Medicare lists Obstetrics/Gynecology as the primary specialty.
- Does Mark A. Sibul accept Medicare assignment?
- Yes. Medicare's clinician data says Mark A. Sibul 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 Mark A. Sibul?
- (874) 896-3300, as listed in official Medicare / NPI Registry data.
- What is Mark A. Sibul's NPI number?
- 1700841848. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mark A. Sibul works
Medicare's Facility Affiliation Data lists Mark A. Sibul at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Northshore University Healthsystem - Evanston HospitalEvanston, IL · Acute Care Hospital · CCN 140010
- Northwestern Lake Forest HospitalLake Forest, IL · Acute Care Hospital · CCN 140130
- Northwestern Memorial HospitalChicago, IL · Acute Care Hospital · CCN 140281
Practice locations
Addresses where Mark A. Sibul is enrolled with Medicare (CMS data updated 2026-10-02).
- 1000 Ctr St, Suite 700Evanston, IL 60020 (874) 896‑3300
- 12251 S 80th AvePalos Heights, IL 60463 (708) 923‑5869
Group practices
Medicare enrollment lists Mark A. Sibul as a member of these groups (CMS data updated 2026-10-02).
- Central Dupage Physician Group1,080 clinicians in the group
- Midwest Center for Women's Healthcare, Ltd93 clinicians in the group
Specialties
- Obstetrics/Gynecologyprimary
Other OB-GYNs in Evanston
Clinicians with the same Medicare primary specialty in Evanston, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Chicago, Pritzker School Of Medicine |
| Graduation year | 1990 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1700841848 |
| 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