
Overview
Marc Alonzo, MD, an interventional radiologist at Endeavor Health, performs minimally invasive procedures to diagnose and treat a wide range of conditions including cancer, kidney disease and vascular disorders. He values patient communication and takes pride in helping people feel more comfortable during stressful procedures. Dr. Alonzo is particularly involved in interventional oncology, where advanced imaging and targeted therapies like radioembolization and thermal ablation offer new hope for patients with tumors in the liver, lungs and kidneys.
Dr. Alonzo is rated as an Experienced provider by MediFind in the treatment of Triple-Negative Breast Cancer. His top areas of expertise are Peritonitis, Secondary Peritonitis, Ascites, Vertebroplasty, and Bone Graft.
His clinical research consists of co-authoring 10 peer reviewed articles. MediFind looks at clinical research from the past 15 years.
Insurance
Accepted insurance can change. Please verify directly with the provider.
Accepted insurance plans:
- HMO
- INDEMNITY
- POS
- PPO
- EPO
- HMO
- POS
- PPO
- EPO
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- MEDICARE-MEDICAID PLAN
- OTHER MEDICARE
- OTHER MEDICARE PART D
Locations
2650 Ridge Ave., Department Of Radiology, Evanston, IL 60201
2100 Pfingsten Rd., Department Of Radiology, Glenview, IL 60026
777 Park Ave. West, Department Of Radiology, Highland Park, IL 60035
Clinical Research
Clinical research consists of overseeing clinical studies of patients undergoing new treatments and therapies, and publishing articles in peer reviewed medical journals. Providers who actively participate in clinical research are generally at the forefront of the fields and aware of the most up-to-date advances in treatments for their patients.
Endeavor Health Medical Group
Sidney Regalado, MD, an interventional radiologist at Endeavor Health, performs minimally invasive procedures using advanced imaging guidance. He specializes in diagnosing and treating a variety of conditions through targeted techniques that support faster recovery and reduced risk. Dr. Regalado is rated as a Distinguished provider by MediFind in the treatment of Triple-Negative Breast Cancer. His top areas of expertise are Ascites, Peritonitis, Secondary Peritonitis, Bone Graft, and Vertebroplasty.
Endeavor Health Medical Group
Bruce Brockstein, MD, a medical oncologist at Endeavor Health, specializes in treating head and neck cancers, soft tissue and bone sarcomas, and melanoma. He also serves as medical director of the Kellogg Cancer Centers at Evanston, Highland Park and Swedish Hospitals, and as division head of hematology and oncology. With nearly 30 years of experience, Dr. Brockstein is committed to patient-centered care and expanding access to comprehensive cancer services within the health system. Dr. Brockstein is rated as a Distinguished provider by MediFind in the treatment of Triple-Negative Breast Cancer. His top areas of expertise are Gastrointestinal Stromal Tumor, Undifferentiated Pleomorphic Sarcoma, Adult Soft Tissue Sarcoma, and Mesenchymoma.
Endeavor Health Medical Group
Sebouh Gueyikian, MD, Chief of Interventional Radiology at Endeavor Health, has more than 25 years of experience using advanced imaging and minimally invasive techniques to diagnose and treat complex conditions. Working with a highly trained team, he manages even the most challenging cases with precision and care. Dr. Gueyikian combines innovation with compassion, specializing in procedures such as embolization therapies and modern interventional oncology to improve outcomes, enhance comfort and help patients fully understand their treatment options. Dr. Gueyikian is rated as a Distinguished provider by MediFind in the treatment of Triple-Negative Breast Cancer. His top areas of expertise are Ascites, Visceromegaly, Alcoholic Cirrhosis, Liver Embolization, and Bone Graft.
Areas of Expertise
MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.
Learn more about MediFind’s expert tiers
- Distinguished
- AscitesDr. Alonzo isDistinguished. Learn about Ascites.
- PeritonitisDr. Alonzo isDistinguished. Learn about Peritonitis.
- Retroperitoneal InflammationDr. Alonzo isDistinguished. Learn about Retroperitoneal Inflammation.
- Secondary PeritonitisDr. Alonzo isDistinguished. Learn about Secondary Peritonitis.
- Advanced
- Bile Duct ObstructionDr. Alonzo isAdvanced. Learn about Bile Duct Obstruction.
- Bile Duct StrictureDr. Alonzo isAdvanced. Learn about Bile Duct Stricture.
- Bone GraftDr. Alonzo isAdvanced. Learn about Bone Graft.
- Cholangiocarcinoma (Bile Duct Cancer)
- CholestasisDr. Alonzo isAdvanced. Learn about Cholestasis.
- Familial Colorectal CancerDr. Alonzo isAdvanced. Learn about Familial Colorectal Cancer.
- Experienced
- Aberrant Subclavian ArteryDr. Alonzo isExperienced. Learn about Aberrant Subclavian Artery.
- Alcoholic CirrhosisDr. Alonzo isExperienced. Learn about Alcoholic Cirrhosis.
- ALK-Positive Non-Small Cell Lung CancerDr. Alonzo isExperienced. Learn about ALK-Positive Non-Small Cell Lung Cancer.
- Anaplastic Thyroid CancerDr. Alonzo isExperienced. Learn about Anaplastic Thyroid Cancer.
- Arteriovenous MalformationDr. Alonzo isExperienced. Learn about Arteriovenous Malformation.
- Bladder CancerDr. Alonzo isExperienced. Learn about Bladder Cancer.


