Meet Our Team


Our Physicians

Staffed with an exceptionally skilled team of Neurosurgeons and  Orthopedic Surgeons, all of whom are board certified, Henry Mayo’s new comprehensive Joint Replacement and Spine Surgery Programs provide patients with an exceptional level of joint and spine surgical care by some of the most accomplished surgeons in the region. Click here to research more information on our Physicians.


Alon Antebi, DO

Tarek Bittar, MD

Joseph Burns, MD

Brian Dierckman, MD

Adam Dietz, MD

Jaime Hernandez, MD

Jeffery Kantor, MD

James Kayvanfar, MD

Mark Liker, MD

Richard Nussbaum, MD

Michael Shapiro, MD

Justin Sherfey, MD

Parham Yashar, MD

Charles Young, MD


Team Members

Orthopedic Nurse Practitioner- Graciela Hoal, ACNP-BC, MSN

Clinical Nurse Navigator - Kim Davidson, BSN, RN, CEN

Pain Management Nursing Certified Clinical Nurse Specialist - Pamela Merriam, MSN, RN-BC, OC

Ortho-Spine Co-Management Team

  • Director of Surgery— Britta E. De Volder
  • Manager of the Joint Replacement & Spine Surgery Program and Pain Management—Pam Geyer, JD,RN-BC, CFN, FACFE
  • Program Coordinator - Tatiana Larreynaga, MPA