Elite Hospital Partners

Patient Billing

Billing Support

Ventra is the billing partner of Elite Hospital Partners (EHP) for emergency physician charges. For questions about a statement, insurance processing, payment options or a balance, use the appropriate contact below. Your emergency physician bill may be separate from your hospital bill.

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HospitalsBilling companyPhone
Memorial Health System of Southwest Oklahoma sitesBilling company: Ventra580-470-2224
INTEGRIS Oklahoma hospitalsBilling company: Ventra580-359-2114
EHP Texas hospitalsBilling company: Ventra361-666-5573

Before you call

Have the patient name, hospital, date of service and billing account number available.

Medical records

Neither EHP nor its billing partner stores medical records. For a records request, contact the medical records department of the hospital where you were seen.

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Elite Hospital Partners (EHP)

Join EHP

Interested in joining a growing, physician-owned emergency medicine practice? We look for physicians and Advanced Practice Clinicians who value excellent care, teamwork, initiative and an active role in the practice they help build.

Our independent ownership and lean operating structure allow us to put more of what the practice earns back into the physicians doing the work, through higher compensation and profit sharing, without a partnership buy-in or years of waiting to become eligible.

We build stable physician teams who know the hospital, work well with its staff and take responsibility for the department’s performance.

View Opportunities on LinkedIn

Or contact us at info@elitehospitalpartners.com.

Leadership

Personally involved. Directly accountable.

Hospital leaders know the owner and executive team of Elite Hospital Partners (EHP). Our leadership stays close to the physicians, the departments and the decisions that shape each practice.

David Darrigan, DO, MBA, FACEP

David Darrigan, DO, MBA, FACEP

Founder & Chief Executive Officer

Dr. David Darrigan is a board-certified emergency physician and the founder of Elite Hospital Partners. He trained at Parkland Memorial Hospital / UT Southwestern and holds an MBA. His experience spans clinical emergency medicine, physician-practice development, and hospital emergency department leadership. He continues to work clinical shifts in EHP's departments, keeping him directly connected to the work and the teams he leads.

Before founding EHP, David held physician leadership and operational roles across multiple emergency medicine practices. His work included developing physician teams, managing hospital relationships, guiding contract transitions, and improving department operations and performance. That experience shaped his understanding of what hospitals need from an emergency medicine group, and what physicians need to build a successful practice.

David built EHP around the belief that an emergency medicine group should take responsibility for far more than filling shifts. His approach combines strong clinical care with a practical understanding of patient flow, staffing, documentation, revenue cycle, and the hospital's broader operations. He works directly with hospital executives, nursing leadership, hospitalists, specialists, and EMS to identify what needs to improve and stay involved until changes take hold.

He expects physicians to recognize the influence they have on the entire department. Their urgency, attitude, communication, and clinical decisions shape how the team functions, how patients move through care, and how nurses and staff experience their work. EHP's physicians are expected to embrace that leadership responsibility and approach the practice with an ownership mindset.

David's work also includes medical malpractice expert-witness review and contributions to emergency medicine documentation tools, including the medical decision-making component of Doc Assistant. He supports EHP's investment in physician development through its emergency medicine residency program in Lawton, Oklahoma, and fellowship program in Victoria, Texas.

As EHP's owner, David remains accessible to the hospitals and clinicians the group serves. He takes the performance of each practice personally and brings persistence, direct accountability, and a willingness to adjust when something is not working.

William "Bill" Murry, DO

William "Bill" Murry, DO

Chief Medical Officer

Dr. Murry supports EHP’s clinical standards, physician development and medical director leadership. His role connects clinical oversight with the practical needs of providers and the hospitals EHP serves.

Edward Woo, MD, MBA

Edward Woo, MD, MBA

Regional Medical Director, Texas

Dr. Edward Woo serves as the Texas Regional Medical Director for Elite Hospital Partners (EHP), providing physician executive leadership and strategic oversight of clinical performance, operational excellence, and emergency medicine services across EHP’s Texas region. He works closely with site medical directors, hospital executives, and clinical leadership teams to advance quality of care, optimize emergency department operations, and strengthen hospital partnerships. His responsibilities encompass physician performance and accountability, clinical quality assurance, operational standardization, and the successful integration of new hospital partnerships. He also plays a key role in aligning regional clinical initiatives with organizational objectives to support sustainable growth and consistent standards of care.

Edward Woo, MD, MBA

Edward Woo, MD, MBA

Regional Medical Director, Texas

Dr. Edward Woo serves as the Texas Regional Medical Director for Elite Hospital Partners (EHP), providing physician executive leadership and strategic oversight of clinical performance, operational excellence, and emergency medicine services across EHP’s Texas region. He works closely with site medical directors, hospital executives, and clinical leadership teams to advance quality of care, optimize emergency department operations, and strengthen hospital partnerships. His responsibilities encompass physician performance and accountability, clinical quality assurance, operational standardization, and the successful integration of new hospital partnerships. He also plays a key role in aligning regional clinical initiatives with organizational objectives to support sustainable growth and consistent standards of care.

Edward’s professional background combines frontline emergency medicine expertise with hospital executive leadership and healthcare administration. Having previously served as a hospital Chief Medical Officer and emergency department Medical Director, he brings a comprehensive understanding of clinical governance, physician leadership, hospital operations, and the complex challenges facing emergency departments. His approach emphasizes data-driven performance improvement, interdisciplinary collaboration, and the development of effective clinical and operational strategies. He also continues to practice full-time as an emergency physician, maintaining a direct connection to the clinical environment and ensuring that his leadership decisions remain grounded in the realities of patient care.

Edward completed his undergraduate studies at Columbia University, earned his MBA from Cornell University, and received his medical degree from Michigan State University. His multidisciplinary background in medicine, business, and healthcare leadership informs his approach to advancing clinical excellence and organizational performance. By combining physician expertise with strategic management principles, he is committed to strengthening emergency medicine practices, empowering physician leaders, and delivering high-quality, patient-centered care across EHP’s hospital partnerships.

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Bryan Lavery, MSN, APRN, ENP-C, FNP-C, PMHNP-C

Bryan Lavery, MSN, APRN, ENP-C, FNP-C, PMHNP-C

Executive Director of Practice Operations

Bryan Lavery serves as Executive Director of Practice Operations for Elite Hospital Partners (EHP), where he leads provider operations, workforce planning, practice implementation, and operational performance across the organization's emergency medicine practices. He works closely with physician leadership, hospital executives, and management teams to align staffing, recruitment, onboarding, quality initiatives, and operational priorities across EHP's hospitals and provider groups. His role bridges strategy and execution, helping ensure practices have the structure, people, and accountability needed to support both clinical excellence and long-term growth.

Bryan Lavery, MSN, APRN, ENP-C, FNP-C, PMHNP-C

Bryan Lavery, MSN, APRN, ENP-C, FNP-C, PMHNP-C

Executive Director of Practice Operations

Bryan Lavery serves as Executive Director of Practice Operations for Elite Hospital Partners (EHP), where he leads provider operations, workforce planning, practice implementation, and operational performance across the organization's emergency medicine practices. He works closely with physician leadership, hospital executives, and management teams to align staffing, recruitment, onboarding, quality initiatives, and operational priorities across EHP's hospitals and provider groups. His role bridges strategy and execution, helping ensure practices have the structure, people, and accountability needed to support both clinical excellence and long-term growth.

In addition to being a licensed paramedic, Bryan is a triple boarded nurse practitioner in family, psychiatric-mental health and emergency medicine. Bryan's healthcare career spans emergency medicine, trauma surgery, air-medical critical care transport, and healthcare operations. In addition to serving in advanced practice and clinical leadership roles, he has held executive operational positions responsible for multi-state healthcare organizations and large networks of physicians and advanced practice providers. His previous leadership experience included oversight of more than 170 medical professionals across multiple markets, where he developed clinical and operational protocols, implemented onboarding and mentorship programs, directed compliance and quality initiatives, led EMR implementation projects, and established systems designed to improve provider performance and organizational efficiency.

At EHP, Bryan focuses on building scalable operational processes that strengthen provider recruitment, retention, development, and practice performance. His work includes advancing onboarding and orientation programs, improving workforce planning and scheduling models, supporting physician and APC leadership development, and creating systems that promote consistency and accountability across the organization. Drawing on both frontline clinical experience and executive leadership expertise, Bryan works to ensure operational decisions remain practical, sustainable, and aligned with the needs of EHP's clinicians, hospital partners, and patients while bringing APC representation into the conversations.

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Management Support

Praxi Management Group

Praxi Management Group provides backend practice-management support to EHP. Eric Curtis and David Singley work with EHP leadership on the administrative coordination that supports our hospital-based practices.

Contact EHP