Dr. Jeffrey Brown, DC, MHA, CSSGB, CAC
Assistant Professor, Chiropractic Medicine
Dr. Jeffrey Brown, DC, MHA, CSSGB, CAC, is a chiropractic physician and healthcare executive with more than 20 years of clinical and leadership experience. He founded and led Brown Family Chiropractic Center in Jensen Beach, Florida for 18 years, emphasizing patient-centered care, quality, and results. Dr. Brown holds a Doctorate in Chiropractic Medicine from Life University and an Executive Master of Healthcare Administration from Florida Atlantic University. He now contributes to the academic community at Keiser University School of Chiropractic Medicine, where he is committed to educating and guiding future chiropractors to deliver exceptional care to their communities.
Dr. Alexander Castellano, DC, MS, CCSP, CSCS
Assistant Professor, Chiropractic Medicine
Dr. Alexander Castellano completed an undergraduate Athletic Training focused degree from Quinnipiac University. Dr. Castellano then pursued 100 hours at Stony Brook University Hospital outpatient physical therapy treating total knee and hip replacement patients. Dr. Castellano graduated with honors in the Master of Science of Clinical Nutrition program (MSACN) and Doctor of Chiropractic (DC) program from New York Chiropractic College (NYCC). At NYCC, Dr. Castellano had the privilege of serving as Vice President of the Sports Medicine Club, serving in Student Government, and being awarded the Standard Process Nutrition Scholarship as well as the Frank E. Dean commencement award. Dr. Castellano was accepted into the competitive residency program at South Shore Neurology in Riverhead, NY, where he experienced a multidisciplinary setting consisting of Chiropractic, Physical Therapy and Neurologists. He continued his career in Boston, MA, working with a private chiropractic practice which served as consultants to major athletic programs such as the Boston Red Sox, New England Patriots, Boston University Athletics and Harvard University Sports Medicine. He completed two rotations at United States Olympic & Paralympic (USOPC) Training centers in Lake Placid, NY, and Chula Vista, CA, working alongside an integrated team to deliver care to Team USA athletes. He is proud to serve as an alternate for Team USA sports medicine in the 2026 Milan Cortina Winter Olympics.
Dr. Ralph Kruse, DC, DABCO
Attending Clinician, Chiropractic Medicine
Dr. Kruse completed his pre-medical degree at the State University of New York (Stony Brook) and went on to receive his Doctor of Chiropractic Degree from National College of Chiropractic (now National University of Health Sciences) in 1990. He subsequently earned diplomate status with the American Board of Chiropractic Orthopedics and the American Board of Chiropractic Consultants. His professional interests are in the area of flexion-distraction decompression manipulation for chronic and post-surgical back pain. Dr. Kruse practiced in Chicago from 1991-2017.
Dr. Corey Harrington, DC, MHA
Assistant Professor, Chiropractic Medicine
Dr. Corey Harrington is originally from Raleigh, NC. He began his career in healthcare as an EMT-Paramedic after high school. He chose to pursue a career in chiropractic because he wanted to care for patients outside of the emergency setting through a whole-body, holistic approach. He earned his Doctorate of Chiropractic (D.C.) degree from Palmer College in Davenport, IA. He also holds a Masters in Health Administration (MHA) from Florida Atlantic University. In addition to private practice, he has also worked for Broward College as an adjunct professor in the Math and Science Department. Dr. Harrington teaches for Keiser University and proudly serves as the Veteran Affairs/Department of Defense (VA/DoD) Liaison.