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Evelyn Sosa

Senior Vice President of Operations, BayMark Health Services, Western Region OTPs

Evelyn Sosa serves as Senior Vice President of Operations for BayMark Health Services, overseeing the day-to-day operations of opioid treatment and behavioral health programs across multiple Western states, including BAART Programs’ Western-region clinics. She brings more than a decade of healthcare operations leadership experience, with deep expertise in regulatory compliance, operational excellence, and program growth.

Evelyn leads multidisciplinary teams to ensure clinic operations remain aligned with state and county behavioral health requirements while delivering consistent, high-quality care across the region. She partners closely with clinical, nursing, and administrative leaders to translate strategic priorities into operational execution and sustainable outcomes.

Throughout her career, Evelyn has successfully navigated the complex regulatory landscape of opioid treatment programs while advancing initiatives that improve access, quality, and patient experience. Her leadership remains focused on expanding access to patient-centered treatment and strengthening the delivery of care across the communities BayMark and BAART Programs serve.

Testimonials and Success Stories

“Hi my name is Nancy, I am Sixty year old lady. I want to thank the BAART PROGRAM So Very Much !!! Mainly because All of the staff were Very professional sweet people. That place is very clean. There is absolutely no judgement of people at BAART !!! Any race or sexual preference ,or any faith is Welcome here. In fact one gentleman goes to my church , Flatirons Church . This Church is Amazing as far as everybody is Welcome and you learn truly how much Jesus loves you. Thanks for All your help BAART. You are the best !!!!”

-Nancy Lewis

Verified Patient

“It sure is a relief that there are people in this world who actually understand addiction and the mechanisms that fuel it. My wife and I owe Trish, Tj, Ms. Sharon, Becky, and everyone there our lives! They have all gone to bat for us to help us get our child home. And for once it’s looking like we will have him home soon! We couldn’t have made a better decision than to walk through that door and ask for help. These people are not only great at what they do… they are genuinely good people, with integrity, and are really there to actually help with the recovery process. I hate to think where our lives would be if we never walked into BAART That day. We thank all of you guys for what you do! You guys don’t receive enough credit!!! Thank you”

-Hamster Cottage

Verified Patient

“This is an amazing clinic ran by compassionate, caring and goal oriented people. There is no judgment here and clients are not looked down upon. It is also a harm reduction clinic. I highly recommend this place and can never thank Baart and the loving staff they employ enough!”

-Mark Popejoy

Verified Patient

This is by far the best clinic I have entered. I have been to 3 clinics total now and this is by far the best. Definitely the most professional and caring group of staff I have encountered. They truly care about our sobriety and well being. They are truly here to help us. Thank you so much Bart clinic for letting my recovery be apart of yall

-Michael Bannick

Verified Patient