About the Team

Dr. Gross and his staff, a.k.a Team Gross, would like to welcome you and tell you more about the team and what to expect while treating with them for your injury or ailment.

Team Gross is a division of Ortho Missouri, which consists of specialized physicians working under the same roof.  Each physician has a team and each team may not necessarily have the same policies or hours. But they all have the same goal, which is getting patients back to work, activities or life.


Lyndon B. Gross, MD, PhD

Undergraduate: Dr. Gross earned his BA at Cornell University, Ithaca, New York. While at Cornell he played football all four years and was awarded the MVP in 1986.

Post Graduate Training: Dr. Gross continued his education at State University of New York, Brooklyn, New York where he earned his medical degree and was elected a member of the Alpha Omega Alpha Honor Medical Society and Graduated Cum Laude Class of 1993. In addition he earned his Ph.D. in Molecular Biology. During this time Dr. Gross began playing rugby for the Downstate Rugby Football Club, he went on to play with the Seven’s Rugby Select Side Rugby Team in Hong Kong and in several National Championships.

Orthopedic Residency: Dr. Gross completed his orthopedic training at the University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania.

Sports Medicine Fellowship: It is becoming the standard of care to work with a Fellowship Trained physician. A fellowship is a year-long period of additional training in the area of specialty. Its purpose is to increase knowledge and improve medical judgement, surgical skills, and total management of patients. Dr. Gross completed his Fellowship training in Sports Medicine at the world renowned Alabama Sports Medicine Institute under Dr. William Clancy and Dr. James Andrews. During his Fellowship he worked with Troy University Football Team and the Tampa Bay Rays Baseball Team.

Dr. Gross has a son named Jordan and an Italian Mastiff named Gabby. In his free time he enjoys traveling and he is an avid cyclist and wine collector.

Kelli Dean, PA-C, Physician Assistant

Kelli has been with Team Gross since 2011. She attended Saint Louis University for Physician Assistant School which she greatly enjoyed. Prior to SLU she went to Webster University in St. Louis where she was a four year member of the softball team playing both catcher and outfield. She even underwent her own shoulder surgery and recovery as a junior which she often shares with patients. Kelli lives in south St. Louis city, close to Ted Drewes custard. Her local favorite! Both she and her wife have two wonderful girls who keep them really busy. In their free time they enjoy yard work, house projects, and slow pitch softball. Kelli has enjoyed becoming part of Team Gross and really enjoys spending time with patients and educating them on their injuries.

Jenny Rolens, Billing Coordinator

Jenny joined Team Gross in 2008. She is Dr. Gross' billing coordinator. If you have any questions regarding your billing or statement please contact her directly at 314-336-2638.

Shannon McIntosh, Medical Assistant

Shannon joined Team Gross in 2019. She has been a certified medical assistant for more than 15 years. She is a native and proud St Louisian. She is married to a former K9 police officer. She takes part in several fundraisers throughout the year to support local first responders. She has two daughters, Payton 20, Hailey 17, and former K9 Rolf. In her spare time she enjoys volunteering for the Hazelwood West Marching Wildcats. She enjoys her job, especially helping our young student athletes get back to the sports they love.

Kelly Brooks, Workman's Compensation and
Legal Coordinator

Kelly is the newest member to Team Gross. Her father served in the Air Force during her childhood years and she has lived in Mississippi, South Carolina, Maryland and North Carolina before settling into the St. Louis area. She enjoys traveling, hiking and bicycling or just being outdoors. She has a passion for decorating and loves crafting. Kelly has over 25 years’ experience in the medical field working in various positions. She enjoys meeting new people and values her relationships always aspiring to provide a +1 service.