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About Us

Welcome to Yellowcross, where the future of healthcare meets today's innovation. At the heart of our mission lies a steadfast commitment to transforming telemedicine, empowering physicians, practice managers, and healthcare providers across the United States with unparalleled telemedicine services and practice management consulting. Based in Scottsdale, Arizona, we pride ourselves on being a dynamic, business-to-business consultancy exclusively servicing medical groups and facilities. Our expertise extends beyond mere consultation; we are architects of bespoke telemedicine solutions driven by a passion for enhancing healthcare delivery and a profound understanding of this evolving landscape's unique challenges and opportunities. Partnering with Yellowcross means embracing a collaborative journey towards excellence, where every solution is tailored to elevate the standard of care and optimize the operational efficiency of your practice. Join us in redefining healthcare, one innovative step at a time.


Robb Vaules


Robb has 30 years of experience in the Healthcare and IT industry in operations, sales, and marketing, with the last 20 years in Teleradiology. Before launching Yellowcross, Robb was the Senior VP of Sales and Marketing at ONRAD, a national teleradiology practice in Phoenix. In 2003, he began his work in healthcare at Virtual Radiologic before becoming the COO of American Teleradiology in 2005. At ATN, Vaules worked to build and manage the operations and sales staff until their sale to NightHawk Radiology Services in 2006. At NightHawk, he worked as a Director in M&A and held government and key account and sales responsibilities. Robb graduated from Northern Arizona University and attended The University of Texas, Austin, for graduate school.

Kent Thomas

President, COO

Kent has over 25 years of Healthcare Leadership, Healthcare Sales, IT, and Operations experience, including seven years in a clinical environment. Kent recently served as the Vice President of Operations and Integrations for Radiology Partners, the largest national radiology practice in the US. Before RP, Kent held senior leadership positions in M&A, operations, business development and strategy, product development, and Sales Leadership with MEDNAX, Virtual Radiologic, and NightHawk Radiology Services. While serving in the Army, Kent deployed overseas as a practicing First Assistant in the 86th CSH (Combat Support Hospital) after earning his clinical education from the Academy of Health Sciences, Ft. Sam Houston, Texas. Kent earned his bachelor’s degree in business administration from the University of Phoenix.

Ken Serra MD

Chief Medical Officer

Ken Serra, MD, is a board-certified diagnostic radiologist with 23 years of experience as a Diagnostic and Interventional Radiologist. He came to medicine with a background in biomedical device development in Silicon Valley under the mentorship of Thomas Fogarty, MD. His training included medical school at the University of Colorado School of Medicine (class of 1997), an internship at Highland Hospital in Oakland, California, a residency in diagnostic radiology at Dartmouth, Hitchcock Medical Center, in New Hampshire, and completion of his Interventional Radiology fellowship, including cardiac MRI, at UCLA in 2003.

Dr. Serra has worked in various settings, including academic practice, private practice, and teleradiology. He was the Director of cardiovascular imaging for Virtual Radiologic before becoming the Radiology Director for a three-hospital system in Phoenix, Arizona. Most recently, he has been Director of Interventional Radiology for Chandler Regional Medical Center and Mercy Gilbert Medical Center.

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10458 E Jomax Rd #100
Scottsdale, AZ 85262
[email protected]


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