Castle Connoly Top Doctors 2018 - Phillip G. Ploska, MD
Call Today: (770) 892-0273

Meet Our Providers

The medical team at Regenerative Orthopaedics & Spine Institute (ROSI) is led by Dr. Philip Ploska, a board-certified orthopedic surgeon and one of Atlanta’s “Top Docs.” Our team consists of board-certified nurse practitioners, nurses, surgical technicians, and X-ray technologists. ROSI is a multidisciplinary team you can trust.

All of our professionals participate in annual continuing medical education related to current concepts of orthopedics and rehabilitation. Our top priority is providing the very best care for our patients.

To schedule an appointment at ROSI in Stockbridge or Griffin, Georgia, please call (770) 892-0273 or submit an appointment request form.

Philip G. Ploska, MD, FAAOS

Philip G. Ploska, MD, FAAOS

Board-Certified Orthopedic Surgeon

Dr. Philip Ploska is a nationally renowned board-certified orthopedic surgeon and one of the only orthopedic spine specialists in the Atlanta metro area. He graduated from Vanderbilt University with a double major in mathematics and chemistry and earned his medical degree from the prestigious Georgetown University School of Medicine in Washington DC. Dr. Ploska completed his orthopedic surgery residency at University of Virginia Hospitals in Charlottesville, VA.

Dr. Ploska specializes in surgical and nonsurgical treatment of disorders of the spine and occupational injuries, as well as arthroscopic surgery and joint replacement. As a researcher in orthopedics he has pioneered cutting-edge treatment for orthopedic and spine disorders, such as sacroiliac fusion, mesenchymal cell treatment (regenerative orthopedics), and the latest developments in PRP to treat a variety of musculoskeletal disorders.

Notable accomplishments in Dr. Ploska’s career include being selected as one of Atlanta’s “Top Docs” by Atlanta magazine. He has also been named a top regional doctor in orthopedic surgery by Castle Connelly since 2011. Dr. Ploska has served as the orthopedic surgeon for the PGA tour, the Professional Rodeo Cowboys Association, and the American LeMans Race Series.

Dr. Ploska is a fellow of American Academy of Orthopaedic Surgeons (FAAOS) and a member of the Atlanta Orthopaedic Association. In addition to growing his thriving practice in Atlanta, Dr. Ploska often travels nationally and internationally to train other orthopedic surgeons.


Steven P. Rayappa, MD

Orthopaedic Sports Medicine Surgeon

Steven P. Rayappa, MD is a graduate of the University of Pittsburgh School of Medicine. He completed his residency in orthopaedic surgery at Albany Medical Center in New York, as well as a fellowship in sports medicine at the Miami Orthopaedics and Sports Medicine Institute with Dr. Uribe. Dr. Rayappa previously served as the assistant team physician for the Miami Heat, Miami Dolphins as well as Florida International University Football. He provided coverage of the FedEx Orange Bowl, Miami Beach Bowl and NCAA MAAC tournament. Dr. Rayappa is a member of the Arthroscopy Association of North America, American Orthopaedic Society for Sports Medicine and the American Academy of Orthopedic Surgeons. Dr. Rayappa's area of expertise includes anterior cruciate ligament (ACL) reconstruction, rotator cuff repair, labral repair, tendon and ligament repair and reconstruction, unicompartmental knee replacement and shoulder resurfacing. 

Clinical Specialties:

  • Knee surgery
  • Hip Surgery
  • Shoulder Surgery
  • Arthroscopic Knee Surgery
  • Arthoscopic Shoulder Surgery 
  • Sports Medicine (Upper Extremity)
  • Sports Medicine (Lower Extremity)
  • Orthopaedic Trauma
  • General Fracture care
  • Regenerative Medicine - Stem cell, PRP


Lisa Sims, DNP, FNP-C

Lisa Sims, FNP-C

Board-Certified Family Nurse Practitioner

Lisa Sims is a board certified Family Nurse Practitioner at Regenerative Orthopaedics and Spine Institute who partners closely with Dr. Philip Ploska, She has over 15 years of experience treating orthopaedic conditions in adults and children.  Lisa graduated from Georgia State University with her Master of Science degree in 2006. She attended the University of Alabama where she completed her Doctor of Nursing Practice with honors in 2017. 

Lisa has gained invaluable experience working alongside Dr. Ploska. She specializes in nonsurgical treatment options for the full spectrum of orthopaedic disorders. She is involved in the entire continuum of care for Dr. Ploska's patients and you will see her in the office and hospital settings. She treats patients in our Stockbridge and Griffin locations. 

Lisa is an active member of the American Academy of Nurse Practitioners; Sigma Theta Tau, the International Honor Society of Nursing; and was inducted into Phi Kappa Phi Honor Society. 

Lisa and her family reside in McDonough. She enjoys attending sporting events, gardening and spending time with her family. 


Angela Miller, FNP-C

Angela Miller, FNP-C

Board-Certified Family Nurse Practitioner

A board-certified family nurse practitioner, Angela graduated from Mercer University in Atlanta. She works in collaboration with Dr. Ploska to provide nonsurgical treatment options for the full spectrum of orthopedic subspecialties such as spine, foot and ankle, hand and upper extremities, hip and knee.

Angela is an active member of the American Academy of Nurse Practitioners. She sees patients in our Stockbridge and Griffin locations.

Regenerative Orthopedics & Spine Institute

Patient Testimonials

“I can honestly and genuinely say there is no other doctor I would rather go through this part of my life with by my side. He's a magical doctor and amazing at his craft. He treats his patients with respect and listens to them, so to him you are not just a number.”

Learn More