Our Leadership Team

We at Diagnostic Health Services are proud of our team. At Diagnostic Health Services all our team members strive to offer the best possible service and relationships with our people and customers.



Bruce W. Hammond,
President and Chief Executive Officer

30 years of management experience, from small to medium sized organizations over a spectrum of industries and a history of successful reorganization and growth provides a unique base of knowledge and practical experience to meet many challenges.

Active in state and national trade and professional associations, serving as Chair of the Business and Industry Advisory Council to the Texas Organization of Rural and Community Hospitals for the past 6 years and as a staff advisor for ten years prior to that. Work with the Oklahoma Rural Health Association, Texas Hospital Association, Texas Medical Association and several other groups as a volunteer advisor.

Community volunteer, active in Children's issues, Political candidate for the Arlington Texas School Board, supporting Shrine Children's Hospitals, Gladney Center for Adoption, Texas Scottish Rite Hospital and other community organizations mark a commitment to being well rounded and putting beliefs into action and providing financial resources to improve the community.
Tina Vonderheide,
Vice President

Tina is the Division Manager in our Saint Louis Regional Office. She began her career in healthcare as a business office manager for several physicians. She has been a part of Diagnostic Health Services for more than 25 years and has progressed through several positions including accounting, sales, operations and management. Tina has been a Division Manager since 1999 and currently oversees one of the largest divisions in Diagnostic Health Services. Tina is married with one child and also functions as the educational coordinator for Diagnostic Health Services' technical staff.
Tim Chambers,
Vice President

Tim Chambers joined Diagnostic Health Services in January, 1997, as a Division Manager when Diagnostic Health Services acquired Ultrasound Diagnostic Services where Tim had been employed since 1981. He and his family moved to California in 1999, leaving Diagnostic Health Services for a short time. Tim re-joined Diagnostic Health Services in December, 2000, as Division Manager in Phoenix with responsibilities for California, Oregon, Nevada and Arizona.

Tim was recently appointed Director of Human Resources when the company realigned duties; Tim earned an MBA degree with a concentration in Human Resources from the Keller Graduate School of Management so this fit was a natural. Clinically Tim has been ARDMS certified in adult echocardiography since 1983. He was elected a Fellow of the American Society of Echocardiography in 2009. He and his wife, Renee, have two children, Andrew and Kalie.
David Look,
Chief Information Officer

David Look is the Chief Information Officer for Diagnostic Health Services. David has held this position since he joined Diagnostic Health Services in 1997. David has responsibility for keeping the division offices connected, customer interfaces and ongoing monitoring of telephone, security and other communications. A challenging job for anyone to do a few of these tasks, but given David has to maintain business plus medical plus communications plus security and deal with numerous customer interface issues across service lines, instrumentation and "one-off" customer requests he relies heavily on his hardware background. Prior to coming to Diagnostic Health Services, David founded and operated a value added computer reseller enterprise which involved an internet hosting business specializing in multi-campus wide are computer networks integrating off the shelf programming for the end user clients he developed. What an astounding coincidence of experience anticipating need.

David is married to Robin who is an recruiting manager in the legal area. David and Robin have 3 grown children. David is an active volunteer in support of the public school education and in his spare time works as an official for Lacrosse and Football while trying to avoid the hoard of people who wants him to answer just one little question about their computer or smartphone. David is an invaluable asset for Diagnostic Health Services to meet our goals.