Executive Staff

Mosaic Community Services - transforming lives through comprehensive health services for people with mental illness and addictions.

Jeff Richardson, MBA, LCSW-C
President and Chief Executive Officer

Jeff Richardson has served as the President and Chief Executive Officer of Mosaic Community Services for eighteen years and brings over thirty years of experience in behavioral health. He has been instrumental in Mosaic’s growth to become the largest community-based behavioral health service provider in Maryland. Mr. Richardson holds a master’s degree in social work from the University of Maryland and a master’s in business administration from Loyola University. Committed to garnering and expanding support for community mental health, Mr. Richardson serves on multiple nonprofits boards, state task forces, and academic positions, including The National Council for Behavioral Health, Mental Health Association of Maryland, Bon Secours Hospital, Itineris and Community Behavioral Association of Maryland.

Lori Doyle
Chief Operating Officer

Lori Doyle has worked in community-based mental health for 27 years, the last 10 as chief operating officer of Mosaic Community Services, an organization annually serving over 20,000 children and adults with mental illness in Baltimore and Carroll Counties and Baltimore City. She also serves as the public policy director for the Community Behavioral Health Association of Maryland (CBH), and has lobbied the Maryland General Assembly for over 20 years on health policy and budget-related issues. She has done pro bono public policy work for the Brain Injury Association of Maryland and served as president of the BIAM board from 2004-2006. Ms. Doyle currently serves on the board of the Maryland Association of Adult Day Services (MAADS) as well as numerous committees and task forces, including the Medicaid Advisory Committee, the Health Care Delivery Reform Subcommittee, and the Long-Term Care Reform Stakeholders Group. She has a master’s degree in policy science from UMBC.

Janet Deal
Chief Financial Officer

Janet Deal, CPA, Esq., has been practicing healthcare finance for over 25 years and has served as Mosaic's Chief Financial Officer since January, 2008.  Previously, she held the positions of CFO, Controller, and Director of  Financial Planning & Taxation at various healthcare entities in the Baltimore, Maryland region.  Ms. Deal is both a Certified Public Accountant and also an attorney with a Certification in Healthcare Law.  She began her career in 1986 as a staff auditor at Deloitte Haskins & Sells in Pittsburgh, PA.

Diane Maistros, MBA, SPHR
Chief Administrative Officer

Diane Maistros has been with Mosaic Community Services for over 24 years and serves as the Chief Administrative Officer, managing Facilities, Food Services, Human Resources, and Transportation.   She received an Executive MBA from Loyola University.

Spencer Gear, ACSW, LCSW-C
Chief Systems Officer

Spencer Gear serves as Mosaic's Chief Systems Officer and is responsible for Mosaic’s initiative to introduce electronic health records, incident management systems, quality improvement and suggestion systems. He was the Executive Director of New Ventures/Dulaney Station and the Executive Director of Granite House, Inc., for 17 years. Granite House merged with Mosaic in 2008. Spencer has graduate social work degrees both from the University of the Witwatersrand and from the University of Maryland.  During his extensive experience in the Maryland Public Mental Health System, Spencer has taken a leadership role in Continuous Quality Improvement, Practice Management, Electronic Health Records and regulatory issues facing community mental health programs.

Barrett Cisney
Chief of Evaluation and Compliance

Barrett Cisney serves as Mosaic’s Chief of Evaluation and Compliance.  She is certified in health care compliance and has been with Mosaic for 24 years.

Chris Walker
Chief Development Officer

Christiane Walker has twenty years of experience in the non-profit sector, specifically in fundraising and communications.  While the majority of her professional experience has been in human services, she has experience in healthcare and education.  Her background includes experience in grant writing, annual campaigns, major gifts, organization branding, administration and planning, and board development.  Chris has been involved in the successful solicitation of million dollar gifts and multi-million dollar capital campaigns.  Additionally, she has experience in establishing fundraising programs for organizations and working with grassroots organizations on community fundraising drives. Her volunteer involvement includes participation in the Association of Fundraising Professionals (AFP), Association of Healthcare Philanthropy (AHP), United Way of Central Maryland – Baltimore County, and a variety of family-focused activities at her church.  Most recently, Chris has become involved as a volunteer with Meals on Wheels of Central Maryland.

Matt Peeling
Chief Information Officer

Matt Peeling has spent 25 years in the information technology field, specializing in healthcare and business systems. He received a certificate in Management Information Systems from Johns Hopkins University Carey School of Business and a Bachelor’s of Science in Information Technology Management from American Military University. Matt is a retired medical specialist/combat medic with the United States Army Reserve and is pursuing a master’s degree in Business Administration with a concentration in Information Technology Management from American Military University.

Brian Hoover
Chief of Human Resources

Brian Hoover has been with Mosaic Community Services for ten years and serves as the Chief of Human Resources. He received a B. A. in Education from York College and holds professional certifications in human resources.