Quick answers
- Which hospitals does Katherine M. Williams work at?
- Medicare's official clinician data lists Katherine M. Williams at 1 hospital: Northshore University Healthsystem - Evanston Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Katherine M. Williams see patients?
- Medicare's clinician data lists 2 practice locations, including Buffalo Grove, IL and Skokie, IL. Call before your visit to confirm the address.
- What is Katherine M. Williams's specialty?
- Medicare lists Obstetrics/Gynecology as the primary specialty.
- Does Katherine M. Williams accept Medicare assignment?
- Yes. Medicare's clinician data says Katherine M. Williams 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 Katherine M. Williams?
- (847) 537-5200, as listed in official Medicare / NPI Registry data.
- What is Katherine M. Williams's NPI number?
- 1396242053. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Katherine M. Williams works
Medicare's Facility Affiliation Data lists Katherine M. Williams 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
Practice locations
Addresses where Katherine M. Williams is enrolled with Medicare (CMS data updated 2026-10-02).
- 135 N Arlington Heights Rd, Suite 101Buffalo Grove, IL 60089 (847) 537‑5200
- 4905 Old Orchard Ctr, Suite 200Skokie, IL 60077 (847) 673‑3130
Group practices
Medicare enrollment lists Katherine M. Williams as a member of this group (CMS data updated 2026-10-02).
- Midwest Center for Women's Healthcare, Ltd93 clinicians in the group
Specialties
- Obstetrics/Gynecologyprimary
Other OB-GYNs in Buffalo Grove
Clinicians with the same Medicare primary specialty in Buffalo Grove, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Oakland Univ, William Beaumont School Of Medicine |
| Graduation year | 2018 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1396242053 |
| 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