Meet the Providers
Dr. Kelly
President of Pennsylvania Pain and Spine Institute
Dr. Kelly completed his residency at Harvard Medical School and then completed a prestigious subspecialty Pain Medicine Fellowship at Cooper University Hospital. Dr. Kelly also serves as a Clinical Assistant Professor at Lewis Katz School of Medicine at Temple University. Kelly’s areas of interest include: back pain, sports medicine, ultrasound guided therapies & diagnostics, individualized rehabilitation & occupational therapy programs, unique treatments for neuropathic pain, minimally invasive procedures & surgeries for pain relief, manual medicine, and various forms of acupuncture for pain relief and sports performance.
Dr. Bozak
Dr. Bozak completed his residency at Sinai Hospital in Baltimore and is Board-Certified in Physical Medicine & Rehabilitation (PM&R). He is a member of the American Academy of Physical Medicine and Rehabilitation and the North American Spine Society. Dr. Bozak’s areas of interest include minimally invasive pain treatments of the joints, nerves, muscles and spine, joint procedures under imaging guidance, diagnosis of pain origins, and regenerative medicine treatments. Dr. Bozak is also an elite cyclist and CrossFit competitor, and has competed on American Ninja Warrior.
Dr. Bozak qualified and competed in the Masters CrossFit Games in 2025 and is the 16th fittest 50 year old in the world!
Dr. Boyd
Fellowship Trained
Dr. Boyd completed his residency in Physical Medicine & Rehabilitation at Thomas Jefferson University where he served as Chief Resident. He completed a prestigious fellowship in Interventional Spine and Musculoskeletal Medicine at the Rothman Orthopedic Institute. He is board certified in Physical Medicine & Rehabilitation and is an active member of the Spine Intervention Society, North American Spine Society and the American Academy of Physical Medicine and Rehabilitation.
In addition to medicine, Dr. Boyd enjoys playing music, spending time with family, and is an avid Philadelphia sports fan.
Lauren Koerick, PA-C
Lauren Koerick, PA-C received her undergraduate degree in Biobehavioral Health at The Pennsylvania State University in 2017. She worked as a medical assistant at Pennsylvania Pain and Spine to gain hands-on patient experience before going on to receive her Masters degree in Physician Assistant Studies at Philadelphia College of Osteopathic Medicine. She returns to Pennsylvania Pain and Spine eager/excited to creative comprehensive care plans for each patient through compassionate understanding and overall helping improve their quality of life.
Jennifer DellaGuardia, PA-C
Jennifer DellaGuardia, PA-C has over 27 years experience as a Physician’s Assistant. Her vast experience includes: Urgent Care at the Philadelphia Veterans Medical Center, Geriatric Rehabilitative Medicine, ENT & Allergy Specialists, and she was previously contracted for the Department of Homeland Security in Family Medicine. She is an active member of the Pennsylvania Society of Physician Assistants, and the American Academy of Physicians Assistants. Her experience with veterans and geriatric rehab give her a unique perspective on patients suffering with acute and chronic pain, allowing her to educate patients in pain medicine and rehabilitative therapies to support positive outcomes.
Mary Kathryn Braun, PA-C
Mary Kathryn Braun, PA-C, is a graduate of King’s College and joined Pennsylvania Pain & Spine Institute after working in trauma surgery at Jefferson. She brings a strong clinical background and is excited to expand her expertise in pain medicine while working collaboratively with our team to help patients improve their function and quality of life.
