Management Team
We are privileged to be part of the ministry of Bethesda.
John English, M.D.
Chief Executive Officer
Dr. John English is board certified by the American Board of Family Medicine and has been practicing medicine since 1993. Prior to becoming the Medical Director of Bethesda Health Clinic, he practiced medicine at Trinity Clinic in Tyler, Texas. John holds a M.D. degree from U.T. Southwestern Medical School. He completed his residency at John Peter Smith Hospital.
Chief Development Officer
Diane Thomason, Bethesda’s Development Director, manages donor relations and fundraising events. She has been with Bethesda since 2009 and was part of the inaugural board in 2002. Diane holds a Fine Arts degree from the University of Texas at Austin and has a tech background. She has held leadership roles in various local organizations, including UT Tyler’s College of Business & Technology, Tyler Executive Women’s Network (TEWN), Christian Women’s Job Corps, The Women’s Fund, and GetIT.
Chief Financial Officer
Melissa, with a BBA in Accounting and extensive healthcare management experience since 1995, has been a dedicated supporter of Bethesda Health Clinic and Hangers of Hope since 2014. She’s passionate about Bethesda’s mission. In her free time, Melissa and her husband Zack volunteer at Prince of Peace Church and engage in community service projects in Whitehouse. As empty nesters, they love exploring the outdoors, particularly through hiking, remote camping, and skiing adventures in Colorado.
Rick Martinez, M.D.
Medical Director
Rick comes from a family of medical professionals. His grandfather was a pulmonary doctor, his father was a pediatrician and his brother is an allergist. He graduated from the University of Kansas School of Medicine and fulfilled his internship and residency in San Antonio.
Rick loves taking care of patients of all ages, especially the elderly, and is passionate about helping care for those with diabetes. Diabetes is something that runs in his family and he also has the disease, which allows him to share a personal connection to those patients.
He is trilingual and speaks English, Spanish and German. He enjoys playing tennis and watching Star Wars, and has four daughters.
Lead Nurse
Marsha Jones joined Bethesda in 2022 as a Lead Nurse.
Marsha is a 1981 graduate of Texas Eastern School of Nursing. She has 42 years of experience. These years include time in ICU, ER, Cardiology, Home Health and Hospice. Marsha has been a volunteer at Bethesda with Grace Community for the last 6 years.
In her spare time, Marsha spends time with family. Her hobbies include quilting, needlework and making things for her family including her 4 children and 6 grandchildren.
Clinic Operations Director
Director of Culture and Engagement
Laura holds a BA in Business Management from Stephen F. Austin University.
Prior to joining Bethesda in 2014, Laura held positions as Customer Service/Engineering Rep. with TXU Energy, Executive Director of a Chamber of Commerce in Georgia, Retail Manager of teacher supply, and various administrative positions.
IT Director
Don received a BA in Liberal Studies (Elementary School Teacher Program) and a BA in Mathematics from Sacramento State University, Sacramento.
He previously served on the boards of BBB of Central East Texas, Operation Go Quickly, Greater East Texas IT Professionals, Innovation Advancing Education and Parent Services Center.
Director of Community Relations
HR Manager
Chrystal Carter
Retail Director
Pediatric Medical Director
Dental Director x141
Learn about Donating to Bethesda
Visit our donations page and learn about all the ways you can help support our mission at Bethesda Health Clinic.