The Bull City PT Team

Dr. Colten Sullivan, PT, DPT, CSCS

Dr. Colten earned a Doctor of Physical Therapy (DPT) from Elon University and holds a BS from Eastern Washington University. He is a Certified Strength and Conditioning Specialist (CSCS) and is also working to become a certified Orthopedic Clinical Specialist (OCS). He is certified in Dry Needling and enjoys using cupping and other soft tissue tools in his treatment sessions.
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Colten is the owner of Bull City Physical Therapy. He started the clinic to put what matters first, the patient. He believes that physical therapy should be as much preventative as it is rehabilitative. Colten’s athletic experience playing collegiate soccer and running marathons developed his passion for reducing sports injuries. His unique treatment approach helps ease pain frequently associated with athletic training. In his free time he enjoys spending time with his family and friends, traveling, and staying active! Fun fact, occasionally when you call in his Mom will be answering the phones to help out while staff are on vacation!

Dr. Dylan Michel, PT, DPT, OCS

Dr. Dylan earned a Doctor of Physical Therapy (DPT) from University of Indianapolis and has a BS in Exercise Science from Indiana University. He also completed the University of North Carolina Orthopedic Physical Therapy Residency program and is a Board-Certified Clinical Specialist in Orthopaedic Physical Therapy (OCS). He is also a certified Champion Performance Specialist and has taken advanced courses in managing fitness athletes. 

Dylan became a physical therapist to help patients overcome obstacles and achieve their goals, whether those goals are smashing a personal record on a lift, running a marathon, or playing with grandkids. Dylan enjoys treating patients with a variety of orthopedic conditions, developing special interests in returning  athletes to their competition and treating low back, knee, and shoulder conditions. In his free time, he enjoys playing sports, weightlifting, and spending time with family and friends.​

Dr. Tim O'Connor, PT, DPT

Dr. Tim earned a Doctor of Physical Therapy (DPT) and Bachelor of Science in Biology from Seton Hall University. Tim has multiple years of experience treating orthopedic injuries, and he has also treated various age groups and conditions, such as fall prevention, concussions, and vestibular treatment. Tim also incorporates dry needling and other manual therapies into his treatment sessions. 

​Tim was born and raised in Northern New Jersey about 30 minutes from New York City. He is an avid fan of the Seton Hall Men's Basketball team and the New York Mets. He even met Bill Murray at a Seton Hall game! He utilizes a hands-on treatment approach and adapts his treatment to each patients' progress. Tim enjoys trying new coffee shops with his wife, hanging out with his six brothers and friends, and playing bass guitar. 

Dr. Mary Corcoran, PT, DPT

Dr. Mary earned a Doctor of Physical Therapy (DPT) from Elon University and has a BA in Exercise and Sport Science and Psychology from the University of North Carolina at Chapel Hill.
She uses a hands-on treatment approach, often utilizing cupping and other soft tissue techniques to compliment an individualized strengthening/mobility program designed specifically for each patient. She enjoys treating a wide variety of patients and orthopedic conditions, and loves helping people reach their goals.

​Mary grew up in Greensboro, NC, making her the only member of the team from North Carolina! She is a huge fan of UNC basketball and the US women’s national soccer team. In her free time she enjoys playing sports, trying new restaurants and breweries, and spending time with her friends and family.

Dr. Spencer Cole
PT, DPT, OCS, SCS, FAAOMPT, CSCS

Dr. Spencer earned a Doctor of Physical Therapy from Duke University and has a B.S. in Kinesiology from Michigan State University – Go Green! Following PT school, Spencer completed his Orthopedic Residency in South Carolina, and then a Sports and Orthopedic Manual Physical Therapy Fellowship in Texas. Spencer is Board Certified in both Sports and Orthopedic Physical Therapy. He has worked with a variety of patients, from middle and high school athletes to active adults, including Olympic and Paralympic Athletes. 

In his free time, he enjoys spending time with his family, exploring the outdoors, drinking coffee, playing golf, and watching sports.

Giselle Chun - Office Director

Giselle graduated from the University of North Carolina at Greensboro with a Bachelor’s of Arts in Psychology and a minor in Human Development and Family Studies. Giselle has prior experience working at the University’s Recreation and Wellness Center. As a former competitive dancer, Giselle is aware of the benefits of physical health on mental and social health and their interactions. She also understands the importance of preventive and rehabilitative care in maintaining optimal body health. 

Giselle loves being part of the Bull City Physical Therapy team and the chance to continue learning, promoting, and applying values of education, sustainability, and inclusion to empower others in their journey in recreation, physical activity, and overall health. She enjoys getting to know patients and looks forward to working with you!

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Katie Long - Office Coordinator, Cary

Katie graduated from University of North Carolina at Greensboro with a Bachelor's Degree in Sociology. She played competitive softball for 8 years and understands the importance of preventive and rehabilitative care for playing sports.

She is excited to be a part of the Bull City PT team and cannot wait to get to know all new and old patients.
Katie is from Raleigh and now resides in Durham. In her free time, she enjoys hiking with her dogs, playing golf with her husband, and adventuring around Durham.

"If you're looking for that one-on-one care, this is the place to go! I was treated like an individual person and not just a number." - Jen Wood