Our Volunteer Team

Carmen BaezaCarmen Baeza, was named Director of Volunteer Services for GBMC in Fall of 2014. With more than 17 years of experience working in non-profit, law enforcement and military sectors, Ms. Baeza is now responsible for managing one of the largest groups of healthcare volunteers in Maryland. She supervises the fundraising components of the gift shop, the Nearly New sale and various vendor sales in addition to acting as organization liaison to the Volunteer Auxiliary Board.

In the past, Ms. Baeza served as the Director of State Initiatives for the Cal Ripken, Sr. Foundation and as a Program Manager at the National Center for Missing and Exploited Children. Earlier in her career, she was an active member of the Unites States Army, and achieved the rank of Sergeant (E-5), before going on to serve as a Maryland State Trooper.

Carmen enjoys working with GBMC’s wonderful volunteers to support the hospital’s mission of providing medical care and service of the highest quality to each patient leading to health, healing and hope.

Lieta ManistreLieta Manistre became Assistant Director of Volunteer Services in September of 2011.  She is responsible for the student volunteer programs, volunteer training, volunteer craft initiatives, and data collection and analysis.  Lieta began her service to GBMC as a volunteer in 2009, volunteering within Wound Care, the Lymphedema Rehabilitation Center and Volunteer Services. 

Lieta brings over 20 years of experience in Information Technology and Operations management within the Life Insurance industry in Canada and the United States.  In these roles she has supported process improvement, document management, policy administration and corporate functions.  She has developed and delivered training and best practices for IT professionals in quality assurance and project management.  As a parent, Lieta has also volunteered within schools and scouting.

Patty LeavertonPatty Leaverton started volunteering at the GBMC Cancer Infusion Center in May of 2012.  She recently joined the GBMC Volunteer Services staff as The Corner Shop Manager. Patty is responsible for purchasing, merchandising, staffing, and administrative functions associated with the shop. Patty also supervises many GBMC volunteers who share their time and expertise in assisting with sales and customer transactions.

Patty lives in Hunt Valley and brings over 30 years of advertising, retail and entrepreneurial experience to the position. Her strong retail background includes merchandise buying, operations management, and district management experience, overseeing seventeen stores and one hundred seventy sales associates in a three state region. Prior to managing the hospital’s premier gift shop, Patty was a partner in a full service video production company and owned Disc Jockey Enterprises Inc. Hunt Valley, MD.

Patty looks forward to providing excellent customer service, a 22 year tradition at the GBMC Corner Shop and believes by expanding merchandise choices there will be tremendous opportunities for growth.

Karleen LombardGina Richardson Engel joined the Volunteer Services team in July 2015 as Administrative Coordinator. She is responsible for administrative management of the office and oversees GBMC's high school volunteer program and Special Helpers team.

Most recently, Gina worked as a Marketing and Sales Associate for Murray Corporation in Hunt Valley. She previously served as Special Events Coordinator for the Cal Ripken, Sr. Foundation and as Director of Programs for the Maryland Highway Safety Foundation. With more than 20 years of experience, Gina has managed students and interns as well as worked side-by-side with volunteers for various projects and special events. She has an extensive background in marketing, event planning, media communications and relationship management.

Gina has a strong admiration for GBMC and looks forward to many years working with its volunteers and staff to support the GBMC mission.


Greater Baltimore Medical Center | 6701 North Charles Street | Baltimore, MD 21204 | (443) 849-2000 | TTY (800) 735-2258
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