Smiling woman with short hair wearing a white blouse, standing outdoors with a blurred green forest background.

Jennifer Ash, MD
Founder & CEO

I'm a vascular surgeon by training — and a patient by experience.

In 2022, an autoimmune rheumatologic condition made it impossible to continue operating. Leaving surgery was one of the hardest things I've ever done. I miss it. But it also put me on the other side of the exam table, and what I found there changed everything.

Even with 20 years of medical training, navigating the healthcare system as a patient was overwhelming. The denials, the delays, the phone calls, the forms, the sense that everyone is waiting for someone else to do something. If it was hard for me, I kept thinking, what is it like for everyone else?

That question is why Sideline MD exists. Not as an ending to my medical career — as a redirection of it.

Man in blue plaid shirt standing against blurred green background.

Jean Demosthenes, MBA
Chief Operating Officer

Jean Demosthenes, Chief Operating Officer

Jean brings 20 years of experience across pharmaceuticals, medical devices, and healthcare business strategy — the side of healthcare most patients never see but feel the effects of every day.

His career has taken him from territory management to startup growth to FDA regulatory pathways, helping new medical technologies move from idea to market. He holds an MBA from the University of Illinois and a degree from Illinois State University, where he played football for the Redbirds.

These days, when he's not running operations at Sideline MD, he coaches women's basketball at Parkland Community College — which tells you most of what you need to know about how he leads.

Frequently Asked Questions

Dr. Ash Featured on Access Health, Lifetime TV
Advancing Awareness in Women’s Vascular Health

Dr. Ash appeared on Access Health with Ereka Vetrini to discuss abdominal aortic aneurysms—often called the “silent killer”—and the critical gaps in treatment for women. The segment highlighted how anatomical differences have historically limited surgical options for female patients, as well as emerging innovations like the Ovation Abdominal Stent Graft System that are expanding life-saving access to care. Through expert insight, Dr. Ash helped bring attention to risk factors, early detection, and evolving treatment strategies that are improving outcomes for patients.

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