Assaad Y. Semaan, MD

Medicare activity in 2024

Official CMS public-use data for Assaad Y. Semaan, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Most frequent services

1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)184 services
2. New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)55 services
3. Removal of uterus, tubes, and/or ovaries through abdomen using an endoscope, 250.0 g or less (58571)16 services
4. Imaging of lymph nodes during surgery (38900)14 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

• High blood pressure75%
• High cholesterol75%
• Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)58%
• Arthritis49%
• Diabetes36%
• Anxiety29%

Hospitals where Assaad Y. Semaan works

Medicare's Facility Affiliation Data lists Assaad Y. Semaan at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

• Alexian Brothers Medical Center 1Elk Grove Village, IL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 140258
• St Alexius Medical CenterHoffman Estates, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140290

Practice locations

Addresses where Assaad Y. Semaan is enrolled with Medicare (CMS data updated October 2, 2026).

• 1555 Barrington Rd, Suite 1400Hoffman Estates, IL 60169 (847) 755‑3273
• 1786 Moon Lake BlvdHoffman Est, IL 60194 (847) 755‑8208
• 800 Biesterfield Rd, Suite 110Elk Grove Village, IL 60007 (847) 981‑3576

Group practices

Medicare enrollment lists Assaad Y. Semaan as a member of this group (CMS data updated October 2, 2026).

• Bonaventure Medical Foundation LLC167 clinicians in the group

Specialties

• Gynecological Oncologyprimary

Find other Gynecological Oncology doctors in Illinois →

Other gynecologic oncologists in Illinois

Clinicians with the same Medicare primary specialty in Illinois — not a recommendation.

• Tanya M. Pulver, MD
• Laura Huffman, MD
• Dario R. Roque, MD
• Molly Roy, MD
• Andras Ladanyi, MD
• Nita K. Lee, MD
• Abigail Winder, MD
• Alok C. Pant, MD

All gynecologic oncologists in Illinois →

Other clinicians in Bonaventure Medical Foundation LLC

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

• Lisa M. McCloskey, PA
• Rowena M. Abasolo
• Ha J. Lee, MD
• Cecilia C. Weingart, DO
• Katheryn R. Abbott, PA
• Joyous Subade

Clinician information

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

1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
6. Medicare Care Compare — official Medicare tool to look up clinicians