Meet The Staff

Tesslyn Keim


Born and raised in Ontario, Oregon, Tess and her family are happy to be back in the area after living in Portland, Oregon for the last 5 years.

“I grew up camping and rafting in Idaho and spent a lot of time skiing at Brundage. We are so happy to be back so our family can enjoy Idaho again! After graduating from the Utah Physician Assistant Program in 2012 in Salt Lake City, I worked in family practice in Vale, Oregon before moving to Portland and specializing in GI and hepatology. I am thankful for the experience I have gained and am thrilled to now be a part of Dr. Williams’ team at Capital Surgical Associates. I look forward to once again serving the Treasure Valley!”

Tesslyn Keim
Sayra Cisneros

Sayra Cisneros

Medical Assistant

Sayra has been working as a medical assistant for over 7 years. In that time she has worked in dialysis, family medicine, and rheumatology clinics. Sayra enjoys working with Dr. Williams and learning about general surgery. She speaks both English and Spanish. When she's not working she likes to spend her free time with her daughter, family and her two dogs Toby and Bleu.

Lisa Jack

Office Manager

Lisa began her career in the medical field as an X-Ray Tech in Colorado over ten years ago after many years in the marketing field. She has a background in Urgent Care, Mental Health and Work Comp, with both clinical and administrative experience. Lisa is new to the Boise area but loving all that Idaho has to offer! She and her husband love spending time with their two fur kids Bella and Gigi and enjoy traveling and exploring great food and wine in their free time.

Making a positive impact on patient’s lives is why Lisa chose the career path she did and she is thrilled to be working with Capital Surgical Associates and the high level of expertise and care that each doctor brings to the group. Dr Williams makes such an impact on these patient’s lives and treats them like family every step of the way and is extremely proud to be a part of the practice.

Sayra Cisneros



Bio coming soon...

Boise's Top Rated General Surgeon
Schedule a Consult with Dr. Steven Williams