Board of Directors

  • Jack Dillenberg

    Jack Dillenberg, DDS, MPH

    Board Chairperson
    A.T. Still University
    Arizona School of Dentistry & Oral Health
    Mesa, AZ

    Show Bio

    Dr. Dillenberg is the inaugural Dean of A.T. Still University’s Arizona School of Dentistry & Oral Health. He received his Master’s Degree in Public Health from the Harvard School of Public Health and completed his dental education at New York University, College of Dentistry. Dr. Dillenberg is a Board Member of the American Association of Developmental Medicine and Dentistry, the Association for Prevention Teaching and Research, the Caplin Family Foundation and is the Vice Chair for First Things First Southeast Maricopa Region and Board Chairman for the Center for Oral Health. He is also a member of the American Dental Association, the American Association of Public Health Dentistry, the American Dental Education Association as well as many others. Prior to joining ASDOH, Dr. Dillenberg was Associate Director for public health programs in the California Department of Health Services and prior to that was an Area Health Officer serving the west area of the Los Angeles County Department of Health Services. Dr. Dillenberg is also President of Dillenberg & Friends, Inc. providing a full scope of health services consulting. During most of the 1990s, Dr. Dillenberg served in several capacities in the Arizona Department of Health Services, including Director and Assistant Director in the Division of Family Health Services. Dr. Dillenberg has also served in numerous positions on health-related boards and associations and is the recipient of a great number of honors and awards, including the U.S Public Health Service Chief Dental Officer’s Service Award and the Harvard School of Public Health Alumni Award of Merit. Dr. Dillenberg is recognized at the local, state, and national levels as an expert in the area of public health leadership, health program development, social marketing, oral health issues, health center design, training of community health workers, community organizing and lecture presentations.

    Mailing Address:

    Jack Dillenberg, DDS, MPH
    A.T. Still University
    Arizona School of Dentistry & Oral Health
    5850 E. Still Circle
    Mesa, AZ 85206


  • Maritza Cabezas

    Maritza Cabezas, DDS, MPH

    Board Vice-Chairperson
    Director, Oral Health Program
    Los Angeles County Department of Public Health
    Los Angeles, CA

    Show Bio

    Currently unavailable


  • Ariane Terlet

    Ariane Terlet, DDS

    Board Secretary
    Chief Dental Officer
    La Clínica de La Raza
    Oakland, CA

    Show Bio

    Currently unavailable

  • Louise Aryapour, MBA

    Board Treasurer
    Director of Business Operations and Finance
    SRI International
    Menlo Park, CA

    Show Bio

    Louise Aryapour brings 25+ years of professional and leadership experience with world class organizations such as Stanford University and SRI International. She has played a key role in formulating, implementing and directing several operational activities across multiple market segments. Louise has proven record for improving operational performance through effective organizational leadership, strategic planning, policy development, technology advancement and process roadmap design.

    Louise has a Master of Business Administration (MBA) Degree from Santa Clara University with dual concentration in People and Organizational Leadership and Finance; and Bachelor’s Degree in Business and Finance with Honors from North Wales Institute of Technology in North Wales, Britain.


  • Kathleen Titus

    Kathleen Titus

    Area Director for Community Dental & Public Health
    Henry Schein

    Show Bio


    Throughout her 20 year career with Henry Schein, Kathleen has been the embodiment of what it means to live by the Henry Schein mantra “doing well by doing good”.  Kathleen has served in several capacities throughout her career with Henry Schein; the last decade of which has been focused on public health.  Kathleen has been acknowledged by industry peers and customers alike as a pioneer of Henry Schein’s Community/Primary Health program.  She has received several Outstanding Leadership Awards for Public Health Advocacy and has been invited to sit on a number of key advisory boards.  She currently sits the Advisory board for National Network for Oral Health Access. 

    Kathleen’s current role as Area Director for Community Dental/Public Health allows her to interface with a number of important associations and gatekeeper organizations.  These relationships have resulted in helping to identify programs where Henry Schein Cares grants has been essential to increasing health access points and enhanced delivery of care.  

    One of Kathleen’s visions is to work across the aisle to create a bridge between public and private entities focused on addressing the complex challenges of health disparities.  Kathleen has demonstrated the power of collaboration through as novel approach to problem solving. 


  • Bernard S. Weintraub

    Bernard S. Weintraub, REHS, MPH

    Member of the California Senior Legislature
    Los Angeles, CA

    Show Bio


    United States Army Air Corps Veteran – Aircraft Radio Operator and Control Tower Operator

    Graduate of UCLA School of Public Health

    Retired from LA County Dept. of Health Services

    Administrator, Harbor UCLA Medical; Center, Director, Health Facilities Licensing and Certification, Environmental Health Director

    Captain (Naval Grade) U.S. Public Health Service – Ready Reserve

    Member, LA County Emergency Medical Services Commission

    Senior Assembly Member, Calif. Senior Legislature

    Immediate Past President LA County Commission for Older Adults

    Vice President (USA) American Public Health Association

    Public Health Director- XXVIII Olympiad Los Angeles, CA 1984

    Past President, CA Public Health Assn., CA Environmental Health Assn. LA County Adult Day Health Care Commission, LA Country Commission on Aging

    Board Chair 1990-2001 Public Health Foundation Enterprises, Inc.



  • Conrado E. Bárzaga

    Conrado E. Bárzaga, MD

    Executive Director
    Center for Oral Health
    Pomona, CA

    Show Bio

    Conrado Bárzaga, MD is the Executive Director of the Center for Oral Health, a California based nonprofit research and professional education institute. 

    Dr. Bárzaga is an internationally recognized public health leader with nearly 20 years of progressively important positions with organizations addressing healthcare issues. 

    He has served in top leadership positions for the Los Angeles County Commission on Children and Families First Proposition 10 (First 5 LA)Planned Parenthood, and Sacred Heart University’s Area Health Education Center. He is a member of the Senior Dental Leadership group at The Global Children’s Dental Fund at King’s College London and Harvard University, and a Coro fellow.

    Prior to his appointment to the Executive Director position with Center for Oral Health, Dr. Bárzaga directed the Health Investments for the Los Angeles First 5 Commission and helped develop the Los Angeles Oral Health Needs Assessment of Underprivileged Children, the Oral Health and Nutrition Initiative, The First 5 Association’s Oral Health Peer Learning Collaborative, the Baby-Friendly Hospital initiative, and the Community Water Fluoridation of Los Angeles County.



  • Barbara Vartanian

    Foundation Manager
    Pacific Dental Services
    Irvine, CA

    Show Bio

    Currently unavailable


  • Joseph Colaneri, Ph.D

    Director of Public Affairs
    Foley and Lardner
    Los Angeles, CA

    Show Bio

    Joseph Colaneri is a public affairs director in Foley & Lardner’s Government & Public Policy Practice. His experience includes government relations, association management, legislative and political analysis, employee and corporate communications, and grassroots lobbying.

    Dr. Colaneri advises a wide variety of clients on renewable energy and alternative fuels project funding, tax policy, infrastructure legislation and health care policy. He is a member of the Government & Public Policy and International Practices as well as the Energy Industry Team.

    Prior to joining Foley, Dr. Colaneri was director of government affairs for the National Stone, Sand & Gravel Association, the largest mining association by product volume in the world. In this role, he served as chief lobbyist before the U.S. Senate and principal tax lobbyist for the association. His accomplishments include the successful lobbying of Congress on the reauthorization of TEA 21 – the highway bill.

    Dr. Colaneri has also served as executive director for the Propane Vehicle Council; Washington representative for Unocal Corporation, a Fortune 100 oil and natural gas company with annual revenues of $8-$11 billion; and legislative assistant to both Congressman Cecil Heftel and Congressman Norman Y. Mineta. He was the energy, environmental and military affairs advisor to then congressman and now Hawaii Governor Neil Abercrombie.

    In these positions, Dr. Colaneri has been an integral part of the congressional debate on national energy policy. He drafted the Wind Energy Systems Act of 1980 which became Public Law 96-345. He successfully lobbied for the permanent extension of the business energy tax incentives for geothermal energy production enacted as part of the Energy Policy Act of 1992.

    He also drafted energy tax provisions providing tax equity for liquefied petroleum gas (propane) motor vehicle fuel under the highway excise tax which were enacted into law, and he developed the initial energy tax provisions enacted in the omnibus energy legislation of 2005 providing significant federal tax incentives for alternative fuel vehicles and infrastructure. Over this period of time, Dr. Colaneri has worked with virtually every major national oil and natural gas and renewable and alternative fuel stakeholder group.


  • Amir Nashat, DDS

    Liberty Dental Plan
    Irvine, CA

    Show Bio

    Dr. Neshat's experience in managed healthcare and dental benefits results from leadership roles at multiple organizations including Preferred Dental Care, Family Dental, Dental Café Mobile Services, and Columbus Dental Group. He has been a professional involved in many different aspects of dental care for approximately 15 years. He comes from a family of healthcare professionals and successful business professionals and has demonstrated his capabilities in dentistry, general business management, and turn-around through various different ventures. Dr. Neshat’s education includes a Bachelor of Science Degree from the University of California, San Diego (UCSD) and a Doctor of Dental Surgery Degree from the University of Southern California (USC). He has been an expert consultant/provider in the dental field for a number of health/dental insurance companies, legal firms, and government agencies.



Center for Oral Health