Valley Health Leadership: Dedicated to Excellence in Care
At Valley Health, our leadership team drives innovation and excellence across all facets of healthcare delivery. Led by our executive team, we work in collaboration with a dedicated Board of Directors and a Quality Assurance (QA) Committee to ensure our organization meets the highest standards of patient care, community impact, and operational efficiency.
Executive Leadership
Our executive team brings a wealth of experience and a shared commitment to advancing health equity, improving patient outcomes, and expanding access to care. This team works strategically to align Valley Health’s mission with the needs of the communities we serve.
Leadership and Section Chiefs
In addition to our executive team, Valley Health’s Leadership and Section Chiefs play a critical role in guiding clinical operations, implementing innovative programs, and maintaining a patient-centered approach. These leaders are experts in their fields, ensuring our services remain cutting-edge and responsive to the diverse needs of our patients.
Board of Directors and QA Committee
Valley Health’s Board of Directors and QA Committee provide oversight and direction to uphold our mission of delivering high-quality, affordable healthcare. Together, they ensure we remain accountable to our patients, partners, and the communities we proudly serve.
Mathew Weimer, MD
President & Chief Executive Officer
Mary-Beth Brubeck
Executive Vice President / Chief Financial Officer
Rachel Lively, MS
Executive Vice President / Chief Operating Officer
Mandi Pitsenbarger
Director of Executive Affairs
Leadership
Matthew Christiansen, MD
Vice President of Health Affairs and Chief Medical Officer
Angie Wellman
Vice President of Information Systems / Chief Information Officer
Andrea Vallejos, MD
Vice President of Health Informatics /Chief Medical Information Officer
Jason Ashworth
Chief Safety and Security Officer
Rick Davis
Chief of Human Resources and Corporate Affairs
Lissa Gonzalez, MBA, MSN, APRN
Chief Quality Officer
Ashley Houvouras, PharmD
Chief Pharmacy Officer
Antonio Smith, CPA
Chief Revenue Officer
Brett Wellman, FNP
Chief Community Health Officer
Clinical Section Chiefs
Scott Davis, MD
Family and Internal Medicine
Rebecca Denning, PsyD, ABPP
Behavioral Health
Elizabeth DiStefano, OD
Optometry
Ellie Hood, MD
OBGYN
Andrea Kellar, MD
OBGYN
Andrea Kelly, DDS
Dental
Leigh Ann Levine, DO
Infectious Disease and Addiction Medicine
