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Our Team

"With the freedom that my independent, comprehensive healthcare clinics bring, I am showing the NE and SE Portland neighborhoods that Portland Urgent Care is different because we integrate Urgent Care, Wellness Care and MobilMED for a indepth patient experience. I hand picked my staff to fit the business model that puts patient care as #1. I am extremely proud of their dedication to make sure every patient receives compassionate care, feels listened to and properly cared for."

Mark Hosko, MD


Portland Urgent Care Medical Team and Staff

Aaron Liere PA-C


Aaron started working for Dr. Hosko in the 90's. He is an outstanding provider, easy to talk to, kind, courteous and compassionate. A valued member of our team.

Patrick McAleer, PA-C


Patrick is the newest provider to Portland Urgent Care. After nearly a decade of experience in medicine, he ultimately decided to pursue a Masters in Physician Assistant Studies at MCPHS University in Manchester, New Hampshire. Although he enjoyed living in New England, he is happy to be back in Portland to start his career as an urgent care provider. Outside of medicine, he enjoys reading novels, writing music, cooking, and spending time with his 10-year-old daughter.

Robert Welsh, PA-C


Bobby started working in sports medicine in 1987 as an athletic trainer and certified strength conditioning coach specialist at Portland State University and then at the University of Portland. After 10 years of treating collegiate athletes and professional athletes, including the Chicago Bulls, he left sports medicine to complete his physician assistant education at the world renowned Chicago Cook County Hospital. After graduation, he returned to Portland, where he continues to train high school and college athletes as a speed specialist. Bobby brings a wealth of experience with both orthopedic and neurosurgical operative and nonoperative treatment and diagnosis. Bob is known for saying today could be the best day yet.  

Charlie Wong, MD

Medical Director

Dr. Wong spent most of his career as a medical doctor working for Dr. Hosko. He is highly respected and brings a strong knowledge base to our team.

Teri Lou Dantzler

Executive Assistant

Teri Lou, has worn many hats while working for Dr. Hosko: clinic manager, website designer, CFO, marketing and graphic designer, executive assistant and carpenter.  

Lupe Arredondo

Clinic Director

Lupe started working for Dr. Hosko many years ago in the billing department. She now manages a great team, is skilled at juggling many projects and always has a smile.

Guimar DeVaere

Clinic Director

Starting her career with Dr. Hosko in 2006, Guimar came back home to Portland Urgent Care. She believes the strong relationships at the clinic intuitively help patient’s needs.

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