Perimeter Surgery Center


5505 Peachtree Dunwoody Road
Suite 200
Atlanta, GA 30342
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Phone: 404-350-2450
Fax: 404-352-7420
Email Us »

Monday – Friday
6:00 a.m. to 5:00 p.m.

• Parking fee: $6.00
• Valet: $7.00
• POSC-Perimeter does not validate parking.
• The parking lot is owned and operated by Peachtree Dunwoody Medical Center.

Peachtree Orthopaedic Surgery Center at Perimeter does not provide after hours and/or emergency care. We suggest after hours and emergency care be obtained by contacting your treating physician directly at 404-355-0743, or by going the emergency room of the hospital or by dialing 911.


Our Center

Peachtree Orthopaedic Surgery Center at Perimeter proudly began seeing patients in February, 2012. We are an ambulatory surgery center which is fully licensed by the State of Georgia and the Centers for Medicare and Medicaid Services. Through a commitment to high quality of care and substantial compliance with standards of ambulatory healthcare organizations, Peachtree Orthopaedic Surgery Center at Perimeter was awarded and maintains accreditation by the Accreditation Association for Ambulatory Health Care, Inc. (AAAHC)

POSC-Perimeter is owned by the following physicians of Peachtree Orthopedics:

Michael Bernot, MD
Dominic Carreira, MD
Ezequiel Cassinelli, MD
Wing Chang, MD
John Chao, MD
Xavier Duralde, MD
Timothy Griffith, MD
Anuj Gupta, MD
John Henry, Jr., MD

Lee Kelley, MD
James Kercher, MD
William Kimmerly, MD
Donald Langenbeck, MD
Stephen McCollam, MD
Allen McDonald, MD
Douglas Murray, MD
Scott Pennington, MD

Ashok Reddy, MD
R. Marvin Royster, MD
David Schiff, MD
D. Hal Silcox, MD
Stephen Smith, MD
Obinwanne Ugwonali, MD
Michael J. York, MD

Membership to the Medical Staff of POSC-Perimeter is granted only to those healthcare professionals that have undergone a thorough credentialing process, and who meet and continue to meet requirements set forth by the Governing Body of POSC.

The Surgery Center is staffed with licensed Registered Nurses and Technicians. Anesthesia care is provided by Anesthesiology Consultants.

We are pleased you are considering Peachtree Orthopaedic Surgery Center at Perimeter for your upcoming surgical procedure. It is your right as a patient to make an informed decision as to where your surgery will be performed. If you have questions that are not answered on this website or in materials provided by our staff, please contact us and we will be happy to assist you.

Ownership Disclosure

Financial Assistance Program

If you are uninsured or underinsured, Peachtree Orthopaedic Center at Perimeter may be able to help you through our Financial Assistance Program. To discuss program details or alternate payment options, please contact patient financial services 404-425-1417.

Download a Financial Assistance Application and email a completed version to

Financial Assistance ApplicationFinancial Assistance Application (Spanish)

Professional Affiliations

You will get a separate bill and/or explanation of benefits from the following affiliates if applicable.

Peachtree Orthopedics
Peachtree Orthopedics represents a long tradition in Atlanta orthopedics. Since its founding in 1953, Peachtree Orthopedics has grown to include 35 physicians with a wide range of specialty interests. Click Here to view physicians affiliated with the Perimeter surgery center.

Northside Anesthesiology
A group of anesthesiologists certified by the American Board of Anesthesiology.

Lee Davis, MD
Michael Ashmore, MD
Alan Kaplan, MD
Howard Hong, MD
Justin Scott, MD

Michael Greenberg, MD
Jay Kher, MD
John McNeil, MD
Stephen Grice, MD

K. Douglas Smith, MD
Francis Sullivan, MD
Mark Hamilton, MD
Emery Swenson, MD


Pain Management Services

Epidural Steroid Injections

  • Cervical
  • Thoracic
  • Lumbar
  • Caudal

Radiofrequency Neurotomy

  • Cervical
  • Facet Lumbar

Dekompressor Discectomy

Intradiscal Electrothermal Therapy (IDET)

Facet Joint Injections

Medial Branch Blocks


Sacroiliac Joint Injections

Spine Surgery

  • Laminectomy
  • Discectomy
  • Anterior Cervical Disc Fusion

Orthopaedic Trauma and Arthroscopic Surgeries

Arthroscopic Surgeries

  • Knee
  • Ankle
  • Wrist
  • Elbow
  • Hip

Open Reduction Internal Fixation- Fracture Repair

  • Hands
  • Fingers
  • Feet
  • Toes
  • Ankles
  • Wrists

Tendon and Ligament Repair

  • Achilles
  • Biceps
  • Quadraceps
  • Anterior Cruciate Ligament Reconstruction
  • Acromioclavicular Reconstruction