About Us

PT360 is a patient centered physical therapy clinic with locations in Sandy Springs, Milton and Buckhead. Our physical therapists are leaders in their field and draw from extensive training and experience to provide superior care. We treat most orthopedic and sports medicine problems and service all age groups.

Mission Statement

“Elevating the pursuit of a better lifestyle” 

David Mesnick, PT, OCS, cMDT

David Mesnick is a licensed Physical Therapist with over 20 years experience in owning and operating multiple outpatient physical therapy practices. David is originally from Toledo, Ohio and was raised in Palm Beach Gardens, Florida. David graduated from the University of Florida in 1997 with a B.S. in Zoology and then again in 1999 with a B.S. in Physical Therapy.

David’s clinical emphasis is in manual osteopathic physical therapy with a focus on spine and sacroiliac joint dysfunction (SIJD). David is a board Certified Orthopedic Specialist (OCS) as well as a certified McKenzie Therapist (CMDT). He is also a Certified Functional Dry Needling Practitioner (FDN) and a certified Selective Functional Movement Assessment (SFMA) practitioner.

David has been featured on CNN Health (The 411 on physical therapy) and in Livestrong magazine. He has taught several continuing education courses to other health practitioners, including “An Innovative Approach to the Spine and Lower Extremities”. He also authored both articles, e-books and books on SI joint dysfunction. David has also authored Cash-Based Physical Therapy: A Step by Step Guide to Your Successful Start-Up

David is a member of the American Physical Therapy Association (APTA) and the Physical Therapy Association of Georgia (PTAG).

David sold his first company after successfully growing a 5-therapist PT practice in 2011 to businessman Arthur Blank; the then owner of Atlanta Falcons Physical Therapy Centers. After working for Mr. Blank for 4 years, David founded PT 360, a cash-based physical therapy practice in Sandy Springs, GA. 

When David is not working, he enjoys spending time with his wife Jessica and 2 boys Elijah and Miles. David is an avid sports fan of the Florida Gators and Cleveland sports teams.

Email David at [email protected]

Justin Thomas, PT, DPT

Justin received his Bachelors of Science (BS) in Biology from the University of Florida in 2008 and his Doctorate in Physical Therapy (DPT) from Emory University in 2012. Justin specializes in spine and sports medicine. He is certified in therapeutic dry needling (TDN) and is an instructor for various continuing education courses. Justin believes that a hands-on treatment approach is vital for successful rehabilitation. He believes that each patient should be treated as an entire body as opposed to just the affected body part. He is very passionate about helping people achieve a pain-free life.  He has worked with many actors and actresses from the growing Atlanta movie industry. Justin is an avid golfer and former high school basketball star. Justin enjoys spending time at the lake with his wife Amanda, and children Noel and Lawson.

You can contact Justin at [email protected].

Sam Kridl, PT, DPT, OCS

Sam received his B.S. in Physiology from University of California, Los Angeles (UCLA) in 2010 where he was first exposed to sports rehabilitation as a member of the men’s volleyball program. He then moved to Georgia for Emory University’s Doctor of Physical Therapy program where he graduated in 2013 with Highest Honors and continued on to complete the Emory University Orthopaedic Physical Therapy Residency Program in 2014.

Sam is a board-certified Orthopaedic Clinical Specialist (OCS), member of the Physical Therapy Association of Georgia (PTAG), American Physical Therapy Association (APTA), including the Sports and Orthopaedic sections, and the American Academy of Orthopaedic Manual Physical Therapists (AAOMPT).  Sam is also a certified Functional Dry Needling Practitioner (TDN).

Sam’s clinical interests include post-operative rehab, spinal pathologies, and sports performance training. His treatment approach is based on manual therapy, meaningful exercise prescription, and empowering patients to stay pain-free.
Outside of the clinic, Sam enjoys spending time with his wife, daughter Kennedy, and their two rescue dogs Butterbean and Achilles.

You can contact Sam at [email protected].

Heidi Chichester, PT

Heidi earned her Bachelor of Health Science in 1997 and her Master of Science in Physical Therapy in 1998, both from the University of Miami. Heidi specializes in orthopedics and functional physical therapy. She is certified in trigger point dry needling through Mercer University and is also extensively trained in Redcord neurac. Heidi believes in treating each patient as a whole person rather than a sum of injured parts. She is passionate about helping her patients get to the root cause of their symptoms with the goal of return to function and wellness. Heidi has worked with many student and professional athletes over the course of her career. She also educates on ways to incorporate natural home and body care into everyday wellness routines. Heidi enjoys spending time with her husband, Gary, their two girls, Riley and Jaelyn and their doodle dogs, Sebastian and Luna Bleu. When not at a race or a lacrosse game with her girls, you can find Heidi practicing pilates or immersed in a good book.

You can reach Heidi at [email protected].


Amanda Briggs, PT, DPT, OCS

Amanda obtained her Bachelors of Science in Family, Youth, and Community Sciences from the University of Florida in 2017 and her Doctorate of Physical Therapy (DPT) from Emory University in 2020. She then went on to participate in an Orthopedic Residency through Emory University School of Medicine where she received extensive training in the treatment of orthopedic conditions. She treats a variety of conditions, but has a special interest in treating individuals with hyper-mobility disorders along with dancers, runners, swimmers, and athletes of all ages and levels.

Her treatment methods include manual therapy, dry needling, Redcord Neurac method, GYROTONIC, therapeutic exercise and strength training. She enjoys finding the combination of these methods that work best for each patient. Amanda works with each of her clients to develop a personalized plan of care designed to guide them to a more active and pain free lifestyle.

When not at work, Amanda enjoys baking cookies, exercising, hiking and spending time with her husband Charlie and their dog Murphy.

You can reach Amanda at [email protected]!

Doug Timme PT, DPT, OCS, CSCS

Dr. Doug Timme is a licensed physical therapist, board certified orthopedic clinical specialist (OCS), and Certified Strength and Conditioning Specialist (CSCS). Doug received his Doctor of Physical Therapy degree from the University of Miami in 2020. During his education at Miami, Doug was able to complete research which led to presentation and publication at the national level.

Doug also has experience working with a broad spectrum of athletes including those in weightlifting and CrossFit, elite runners, NFL, MLB, and NCAA D1 across the many sports at the University of Miami. After graduating, Doug completed his Orthopedic Residency at Emory University to further his education and gain clinical expertise while specializing in Orthopedics. During residency Doug also taught within Emory’s Doctorate of Physical Therapy program.

In addition to helping patients move well and pain free, Doug wants to help people reach all of their health and fitness goals.

You can reach Doug at [email protected]

Samantha, Operations Manager

Samantha is the Operations Manager for PT360.  Samantha is a natural leader, self-starter, and always provides excellent, attentive service to our patients. Samantha uses her organizational skills to ensure smooth operations throughout the clinics. Anything you need back office related can be addressed with her! She also has a vast understanding of insurance and will be able to answer any questions you may have. When she is not working, you can find her cuddled up with a good book!

Email Samantha at [email protected]!