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Serving Healthcare Partners with Extraordinary Expertise and Support

We are healthcare industry leaders and medical professionals providing healthcare services and support to affiliate partners, results-oriented medical director programs to skilled nursing facilities, outcome objectives for small and large hospital systems, and compliant, high-quality, value-based medical care to health plans and their patients.

Centerline Leadership

Garen Throneberry

Garen Throneberry

Chief Executive Officer,
Board of Directors

Wes Brasell

Wes Brasell

Chief Financial Officer

Biju Oommen

Biju Oommen, MD, CMD

Chief Operating Officer

Gina Mariona

Gina Mariona

Senior Vice President of Provider Development

Kristin Wiltshire

Kristin Wiltshire

Vice President of Operations

Garen Throneberry

Garen Throneberry

Chief Executive Officer,
Board of Directors

Garen joined Centerline Healthcare Partners as chief executive officer and a member of the board of directors after 30 years in hospital administration serving various organizations. Garen has supported national hospital companies such as Tenet, HCA Healthcare and Community Health Systems overseeing emergency medicine, hospitalist, anesthesia, radiology, pathology, and residency programs in multisite national roles. He was division president for SCP Health, also supporting multisite national emergency and hospital medicine programs. Garen’s expertise and accomplishments are founded on a dedication to teamwork and creating highly desirable work environments. He produces strong clinical and financial results by providing consistent leadership paired with implementing technologies that create provider efficiencies. Garen received his bachelor’s degree in Business Administration from Lambuth University and a master’s degree in Business Administration from Middle Tennessee State University.

Wes Brasell

Wes Brasell

Chief Financial Officer

Wes joined Centerline Healthcare Partners with more than 25 years of experience in operational finance management in several industries including emergency care and physician practice management. Wes is a valued strategic member of the Centerline team focused on building and driving results by bringing his insight to financial operations, contract management, and revenue cycle management. He recently served as chief financial officer in a multisite physician services business to develop and execute a long-term plan. He previously worked as senior director of finance for one of the nation’s leading physician practice management companies that provides integrated facility-based physician services. In that role, Wes was responsible for new business proforma analysis, financial reporting, contract management, quarterly forecasts, and annual budgets for more than 200 contracts across 20 states. Wes received his bachelor’s degree from the University of Alabama.

Biju Oommen

Biju Oommen, MD, CMD

Chief Operating Officer

Dr. Oommen joined Centerline Healthcare Partners as chief operating officer and is a principal founder of Trumen Physicians + Associates, PLLC, a Centerline affiliate practice. He has dedicated his career to providing high-quality patient care to patients in the post-acute and long-term care space. Dr. Oommen and his colleagues are responsible for growing Trumen to its current 75+ board-certified physicians, nurse practitioners and physician assistants, all of whom share his passion for providing excellent care to the aging population. A Houston native, he completed his medical training in internal medicine at Michigan State University and went on to complete a Geriatric Fellowship at the University of Hawaii in Honolulu. Dr. Oommen is board certified in geriatric medicine, is a Certified Medical Director through the American Medical Directors Association (AMDA), and is an active member of AMDA-The Society for Post-Acute and Long-Term Care. Over the years he has served as medical director for various facilities in the Greater Houston area. In addition to Dr. Oommen’s clinical and administrative duties, he serves as Clinical Assistant Professor for the Department of Geriatric and Palliative Medicine at The University of Texas Medical School of Houston. His commitment to excellence has been recognized and honored by his selections as Medical Director of the Year by Lifecare for the Gulf States Region in 2006, Medical Director of the Year for the Eastern Division for 2009, and nomination for AMDA Medical Director of the Year in 2009.

Christopher Lockhart

Christopher R. Lockhart, MD, CMD

Chief Medical Officer

Dr. Lockhart joined Centerline Healthcare Partners as chief medical officer and is a partner at Trumen Physicians + Associates, PLLC, a Centerline affiliate practice. He has practiced medicine in Houston in the long-term care space since 1997 and has worked extensively in facilities as an attending physician and as a medical director. He received his medical degree from McGovern Medical School at UTHealth and is board certified in internal medicine. He is a Certified Medical Director through the American Medical Directors Association (AMDA) and an active member of AMDA-The Society for Post-Acute and Long-Term Care.

Gina Mariona

Gina Mariona

Senior Vice President of Provider Development

Gina joined Centerline Healthcare Partners as an accomplished recruiting professional with more than 20 years of experience in the healthcare field. She has a proven track record developing and executing recruitment growth strategies across a variety of settings. Gina has extensive experience working with private equity-funded organizations to develop and manage aggressive recruitment goals and timelines in local and national markets. She has worked in the post-acute, acute, and outpatient practice settings. As senior vice president in a private equity-owned dermatology group, she developed and built a scalable recruiting platform. She has managed the recruiting and onboarding process for IPC Healthcare/TeamHealth, Vanguard Health System, and other organizations in the for-profit and not-for-profit sectors. Gina founded and operated a consulting firm assisting hospital systems with recruiting, acquisitions, and onboarding process development and management. She earned her bachelor’s degree in Psychology from Framingham State University and is a member of the Association for Advancing Physician and Provider Recruitment (AAPPR).

Kristin Wiltshire

Kristin Wiltshire

Vice President of Operations

Kristin joined Centerline Healthcare Partners with more than 15 years of operations experience across several fields, including healthcare, education, and public relations. Kristin has extensive experience in coordinating, developing, and executing high-priority initiatives to better operationalize hospital-based physician practices nationally. She recently served as a manager of core operations for a large, national physician management company where she developed and implemented site-specific operational plans for more than 350 programs. She has worked with clinical and field operations leaders across the acute, post-acute, and outpatient settings, providing management and oversite of several key initiatives related to standardizing the quality of care. Additionally, Kristin served as an operations manager at the corporate office for a national hospital organization. Her duties spanned many departments, including contract administration, metrics management, and data utilization for day-to-day operations. Kristin has a bachelor’s degree in Public Relations from Marquette University.

Joe Trumble

Theodore Joseph Trumble II, MD, CMD

Physician Advisor

Dr. Trumble joined Centerline Healthcare Partners as physician advisor and cofounded Trumen Physicians + Associates, PLLC, a Centerline affiliate practice. He started his medical training at The University of Texas Health Sciences Center Houston followed by residency in internal medicine and a fellowship in geriatrics at Baylor College of Medicine. He is board certified in internal medicine, geriatrics, and hospice/palliative care. He is a Certified Medical Director through the American Medical Directors Association (AMDA) and an active member of AMDA-The Society of Post-Acute and Long-Term Care Medicine. Dr. Trumble is a practicing physician and medical director.

Centerline Board of Directors and Financial Partners

The Centerline Healthcare Partners board of directors includes seasoned leaders in the healthcare industry with long-term relationships with hospitals and health systems, and representatives from financial partners with strong track records of success.

W. Mark Hamm

W. Mark Hamm

Executive Chariman,
Petra Capital Partners

Garen Throneberry

Garen Throneberry

Andrea Bohannan

Andrea Bohannon

David Fitzgerald

David Fitzgerald

W. Mark Hamm

W. Mark Hamm

Executive Chariman,
Petra Capital Partners

Garen Throneberry

Garen Throneberry

Andrea Bohannan

Andrea Bohannon

David Fitzgerald

David Fitzgerald

Centerline affiliate practice, Trumen Physicians + Associates

Trumen Physicians + Associates is a Centerline Healthcare Partners affiliate practice. Trumen was founded by physician partners and owners in 2010 and is a prominent and highly respected medical group serving Houston and the surrounding communities. Trumen is setting the highest standards in medical care in the post-acute market. Centerline provides administrative and practice support to help Trumen achieve its vision of growth, quality delivery of medical services, and creating the proper work-life balance for its providers.

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