Top Left Corner Top Right Corner
Yuma Regional Medical Center
Pad Lock
Before TopNav
Left Side

Left Nav Bottom

Decrease (-) Restore Default Increase (+) font size

Meet Your Physicians

 Ron Clark, M.D.

Dr. Clark provides an individual, specialized approach to patient care. Following a personal interview and examination, Dr. Clark will give an explanation using non-medical terms to educate his patient related to their condition and the options available to treat them. Dr. Clark has a soft spoken approach to the care and treatment of patients that most find reassuring. Ample time is allowed for patients to express their concerns and ask questions.

He received his medical doctorate from University of Texas at Galveston and completed his residency there as well.



 Rodney Henderson, M.D.

Dr. Henderson is a Board Certified Orthopedic Surgeon committed to excellence by pledging to provide the highest quality of orthopedic care possible. Dr. Henderson specializes in the treatment of a multitude of sports injuries and a broad range of general orthopedic musculoskeletal conditions. His extensive experience allows him to manage nearly all aspects of orthopedic concerns. This broad spectrum of knowledge includes treatment for simple strains and sprains to sports injuries, complex fractures, and severely arthritic joints. He manages all patient concerns from shoulder to hand and hip to foot.



 Shawn Hermenau, M.D.

Dr. Hermenau is a board certified, fellowship trained orthopedic spine surgeon. He believes in comprehensive, patient-centered care. Dr. Hermenau received his medical doctorate from George Washington School of Medicine in 2000 and completed his fellowship at Yale-New Haven Hospital in 2010.



 Ram Krishna, M.D.

Dr. Krishna received his medical doctorate in 1972 from Bangalore Medical College. Specializing in the field of Orthopedic Surgery, Dr. Krishna is prepared to treat a wide range of injuries to the musculoskeletal system, which includes the bones, joints, muscles, ligaments and tendons, in either a non-surgical or surgical manner, resorting to surgery when all other treatment methods have been exhausted or ruled out.  Additionally, Dr. Krishna is trained to diagnose a range of musculoskeletal conditions, such as fractures or sprains.

Read More…

 Kit McCalla, D.O.

Dr. McCalla specializes in general orthopedic trauma cases ath the Center for Bone and Joint Health. He received his medical doctorate from Des Moines University and completed his residency at Michigan State College of Human Medicine. He earned his MBA at Haslam College of the University of Tennessee and also serves in the National Guard.

 Gregory Peare, M.D.

Dr. Gregory Peare specializes in hip, knee and shoulder replacements, ankle knee and shoulder arthroscopy and sports medicine. He received his medical doctorate from the University of Arizona and completed his residency at the University of Texas Medical Branch in Galveston.

Read More…


 William Tontz, M.D.

Dr. Tontz received his Medical Doctorate from
Case Western Reserve University in Cleveland,
Ohio. He completed an Internship and Residency 
at  the Naval Medical Center in San Diego. Dr. Tontz is part of the Fracture Core Service at YRMC.

 Gary Zoellner, M.D.

Dr. Gary Zoellner is an orthopedic surgeon who specializes in osteoarthritis of the hips and knees. He received his medical degree from the University of Wisconsin-Madison School of Medicine and Public Health and has been in practice for 39 years.



Related Links