Cornerstone Orthopaedic Trauma Associates


Whether you are a weekend warrior, an outdoor adventurer or you have been in an accident, Cornerstone Orthopaedic Trauma Associates can take care of you.

We provide operative and nonoperative care for most fractures including:

  • Pelvic and acetabular (hip socket) fractures
  • Fractures about the hip and thigh
  • Knee fractures
  • Leg, ankle and foot fractures
  • Shoulder and clavicle fractures
  • Humerus (arm) fractures
  • Elbow fractures
  • Forearm fractures
  • Sacroiliac Joint (SI Joint) Fusion

We also treat fracture nonunions (fractures that don’t heal) and malunions (fractures that heal incorrectly).

Our Location

We are located at:
4902 W. State Street
Boise, ID 83703

On the corner of State Street and Collister

Call us to make an appointment at 208-579-7200
Email us at [email protected]
Fax us at 877-409-1178

We are open on Monday-Thursday from 8am - 4:30pm and on Friday from 8am - 3pm.

Independent Doctor

Cornerstone Orthopaedic Trauma Associates partners with Independent Doctors of Idaho (IDID). This allows us to choose the highest quality of care and affordable options for our patients.


As independent providers, we have additional freedoms to diagnose and treat patients without the confines of any particular hospital system. Patients and doctors have greater freedom and control of health care decisions, while avoiding potentially conflicting interests. Choice leads to the most affordable care with personalized treatment. IDID offers additional cost saving choices.

Inquire with our office staff about additional options with Blue Cross and Treasure Valley Hospital.

Our Providers

David P. Zamorano, MD, FAAOS

Dr. Zamorano is a Board Certified Orthopaedic Trauma Surgeon with 17 years of experience treating fractures and malunions. After many years in an academic and then a private hospital setting, he is excited to offer exceptional care as an independent physician.

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Erik K. Hanson, PA-C

Erik joins the practice with experience in Orthopaedic Spine and Trauma care. He also served in the U.S. Army for 24 years. Erik earned a B.S. in Health Sciences and also holds a Master Degree as Physician Assistant from University of Nebraska Medical Center.

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Bryan Harr, PA-C

Bryan Harr received his education at Norwich University and Idaho State University. He also has a rich military background: he served as an Air Force Weapons Control Office and currently serves as a PA in the Idaho Army National Guard.

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Niki Cafarelli, PA-C

Niki Cafarelli, a native Idahoan, joins our practice with several years of experience within the ortho trauma specialty. She attended BSU and graduated with a degree in Health Science, and then continued her education at ISU with her Masters in Physician Assistant studies.

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