Dr. Mark W. Pegan, D.C.

Doctor of Chiropractic

Dr. Mark W. Pegan is a Board Certified Chiropractic Physician who focuses on restoring the body to health naturally, through working with the spine, extremities, biomechanics, and nervous system.
He enjoys educating others on the importance of a wellness lifestyle, which includes a balanced nervous system, proper diet, exercise, stretching and a healthy mental attitude. Dr. Pegan’s main mission is to bring together all aspects of healthcare in order to maximize our patient’s results.
Heathrow Chiropractic was founded on the principle that all dysfunctions (pain and disease) require four core methods of treatment. These methods include Active Care, Passive Care, Nutrition, and Mental Being.

Dr. Pegan decided to become a Chiropractor following a traumatic weight lifting injury while attending UCF. Before his injury he was going to become a Physical Therapist. After seeing a physical therapist at UCF with little relief he decided to try Chiropractic treatment for his low back pain. This helped fix his back with no drugs or surgery so he decided to become a physician rather than a physical therapist.


Dr. Pegan graduated from the University of Central Florida with Bachelor’s degree in Health Science. He was then awarded a “Doctor of Chiropractic” degree from Palmer College of Chiropractic. He has completed several continuing education programs to better serve his patients and stays current with the latest techniques and literature in the health field.

Dr. Pegan has studied numerous safe and effective chiropractic adjusting and treatment techniques. These techniques allow him to serve people of all ages with a variety of conditions. Dr. Pegan expresses passion for health daily and is committed to providing patients with the most effective means of natural healing.

He is also a member of the Florida Chiropractic Association and Florida Chiropractic Society. Dr. Pegan works with many different types of patients including the athletes, the elderly, children, and accident victims. He works with athletes at all levels for sports injuries and to enhance sports performance.

Dr. Pegan has also worked and is certified as an electromyographer performing Nerve Conduction and Needle EMG testing. Only 1% of chiropractor are proficient in performing these types of studies. Heathrow Chiropractic also is involved with The Palmer Preceptor Program training young chiropractors out of school and preparing them for the real world.

Dr. Pegan believes it is important to give back to the profession that has given him so much.
Dr. Mark Pegan and his family have lived in the Lake Mary area for over 25 years. He enjoys community involvement with local sporting events. He speaks regularly to schools, businesses, sports groups, and organizations on health, wellness, and safety topics.

In his time away from the practice he enjoys spending time with his wife and two children, weightlifting, surfing, golfing, biking, skiing, and other outdoor activities.

Dr Michael Grocholski

Doctor of Chiropractic

Dr. Michael Grocholski has strong ties to Central Florida. He was born and raised in Apopka, Florida where he graduated from Apopka High School with honors. He then attended Florida Gulf Coast University in Fort Myers, FL where he received a Bachelors of Science in Biology with a minor in Chemistry.
While attending FGCU Dr. Grocholski was in a car accident and that is where he had his first experience with a chiropractor. After experiencing the great healing power of chiropractic he knew he wanted to help others the same way his chiropractor was able to help him. He went on to attend Palmer College of Chiropractic, Florida campus where he received his Doctor of Chiropractic and graduated cum luade.
After moving being away from the central Florida area for about 10 years he realized this is the place he calls home. He lives in Apopka with his wife and two dogs. He enjoys spending time with them as much as he can.
Dr. Grocholski enjoys seeing patients of all ages. He is a firm believer that people should see a chiropractor throughout their entire life to allow them to function at their optimal level. Dr. Grocholski enjoys not only treating the problem areas but treating the whole person. He strives to help people live a healthier better life so they can enjoy the things that truly matter.

Dr Lauren Sanderson

Doctor of Chiropractic

Doctor of Chiropractic Dr. Lauren Sanderson was born and raised in Orlando, where now she, her husband, and dog Leo reside. Dr. Sanderson began her undergraduate degree studies at the University of Central Florida, where she completed her Bachelors of Science degree in Health Science. During her time at UCF she was a member of Golden Key National Honor Society. Following graduation from UCF, Dr. Sanderson furthered her education at Palmer College of Chiropractic in Port Orange, Florida where she graduated Salutatorian and Summa Cum Laude of her class.

During her time at Palmer she was an active member of Motion Palpation Institute and was President of Palmer Florida’s Soft Tissue Club. Dr. Sanderson has been trained in many different techniques, including Diversified, Gonstead, Thompson, and Activator. She is passionate about treating many types of injuries and conditions including headaches, low back pain, pre-natal care, and pediatrics. She is dedicated to giving you the personalized care you need, and will always listen to your concerns. Her hobbies include spending time with family, relaxing at the beach, reading, and traveling.

Why Us?

• “No Wait Policy”. All of our patients are seen immediately.
• Friendly and courteous staff.
• Professional but comfortable atmosphere.
• Large private treatment rooms.
• Convenient location.
• Secondary evaluations/opinions.
• M.D. and attorney referrals.
• Most insurance accepted; we do all the paperwork.