Our Staff

Anthony A., MA -

Chief Executive Officer

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Anthony earned his bachelor’s degree in psychology from the University of Minnesota and his master’s degree in counseling psychology from San Diego Tech. He has worked in this industry for more than 25 years, starting as a tech and working his way up to CEO. He was inspired to enter the field of mental health and addiction treatment services because of his own personal experiences including family members who have struggled with substance use disorder. In fact, he lost his youngest sister to an overdose when she was only 25 years old.

Frank Chen, MD -

Medical Director

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Frank Chen, M.D., is a practicing psychiatrist in Houston, Texas, who specializes in Adult Psychiatry. Dr. Chen’s expertise is focused on treating serious mental illnesses such as Major Depressive Disorder, Bipolar Disorder, and Schizophrenia. He has spent his career managing some of the most severe psychiatric manifestations in hospitalized settings and has the vision to navigate the critical period after a hospitalization. He is extremely active in psychopharmacologic management when symptoms are severe and intolerable. Dr. Chen is passionate about assisting young adults who are trying to navigate changes in their mental health. He provides guidance, not just to patients but also their critical support network, in understanding diagnostic considerations and treatment options. Because of his ability to explain disease states and psychopharmacologic management. Dr. Chen has served on Advisory Boards and Speakers Bureau for multiple pharmaceutical companies because of his expertise in serious mental illness and psychopharmacology. On the personal side, Dr. Chen had a brother who was diagnosed with schizophrenia at the time he started his Psychiatric Residency in 1998. He had the unfortunate opportunity to observe the progression of schizophrenia from the perspective of a clinician and an involved family member for more than 20 years. He has a deep understanding of the complexity of issues involving patients and caring family in the pursuit of wellness.

• Board Certification: American Board of Neurology and Psychiatry
• Residency: Baylor College of Medicine
• Medical School: Saint Louis University
• College: Wharton School of Business, University of Pennsylvania

David Gainer -

Director of Environment of Care

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David Gainer started with The Ranch at Dove Tree in 2018 and has been working in healthcare for more than a decade.  He says he has an “I can fix it attitude,” to life which he employs in his work. “I strive to give our clients the best recovery setting experience possible,” he says. “And I firmly believe in The Ranch at Dove Tree’s mission statement to “improve the lives we touch.” He says he is grateful to work alongside a wonderful and skilled group of people who are all here for the right reason and is so proud of the work that is done at RDT every day.

Andrea Grinnell -

Director of Admissions

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Andrea Grinnell, Director of Admissions, has worked in healthcare for more than 17 years. And, like many in the healthcare profession, one of the things she enjoys most is helping others. She started as an Admissions coordinator at The Ranch at Dove Tree in June 2023 and was quickly promoted to the Director position because of her passion for helping those in need. “Working in substance use disorder treatment is by far the most rewarding position I have ever held in healthcare,” she says.

Chelsea Collier, RN -

Director of Nursing

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Chelsea Collier, RN, serves as the Director of Nursing at the Ranch at Dove Tree. Chelsea has been a nurse for nine years, serving in various roles, but found that helping those with substance use disorders is where she belongs. "I found that I have a true passion for helping those who struggle with addiction," she says. "And I am excited to help make a difference in these individual’s lives, as well as positively impacting our community here in Lubbock, TX."

Aicha Mahmoum -

Human Resources Director

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Aicha’s journey at The Ranch at Dove Tree started in 2022, but she has worked in healthcare for more than 10 years. “I have a servant’s heart and strive to give our clients the fighting chance they deserve in life,” she says of her time with RDT. “The Ranch at Dove Tree’s mission is to ‘improve the lives we touch’ and I firmly believe that we do that every day. I am so proud to work alongside a wonderful and skilled group of people who are all here for the right reason.  I am forever grateful for the work we do every day.”

Terry Don Mooney -

IOP Clinical Supervisor

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Terry Don Mooney has worked for The Ranch at Dove Tree since January 2015 while he was attending Texas Tech University in Lubbock, Texas. Terry Don graduated from Texas Tech May 2020 with a Master of Education Mental Health Counseling Degree at Texas Tech. Terry Don has worked in the field of addiction and recovery services with over 25 years of experience and has been a counselor since 2017. Terry Don also has been active in recovery from addiction with over 34 years in recovery.

Kamdon Robinson -

Director of Business Development

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Kamdon comes to The Ranch at Dove Tree with more than 10 years healthcare experience. His varied career began as a staffing coordinator and recruiter in the Dallas-Fort Worth area where he worked for a start-up pediatric home healthcare company. After a short he was promoted to run day-to-day operations of branch sites. In 2017 he moved back home to Lubbock continuing to work in multiple healthcare genres over the next 3 years before getting back into pediatric home health in 2020 as a business development executive and then Operations Director for branches throughout West Texas. His passion to help people live better lives is unmatched and his driving force is to be the best advocate for those in need which aligns with The Ranch at Dove Tree philosophy to “Improve the Lives we Touch.”

Katrina Toney - MS, LCDC, LPC-A

Director of Clinical Services

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Katrina’s own personal journey and life experiences led her to RDT as Director of Clinical Services. She has a passion for working with the adult population with the intention of helping those who want to find a new way of living through the recovery process. She earned her master’s degree in Mental Health Counseling in 2021 before becoming Director of Clinical Services at RDT. “It is truly an honor to get to work with those who come to the program of treatment and reconnect with family and find purpose in their lives,” she says. “I am grateful for the work the clinical team has provided to those in need with the disease we fight daily. It is an opportunity to see light where darkness once stood, improving the lives we touch.”

Sonja Kirkland -

Director of Utilization Review

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Sonja Kirkland is joining The Ranch at Dove Tree team from the Summit BHC Corporate IT team. She has been in and out of the IT world for about 5 years, between Community Corrections and Healthcare. She most recently worked as a Senior Health & Business Applications Specialist, assisting staff across the Summit facilities with various applications. Sonja has a B.A. in Psychology and a M.S. in Juvenile Forensic Psychology. When she’s not working she enjoys volunteering with her sorority, Alpha Kappa Alpha Sorority, Incorporated and traveling abroad.

Sherry Pritchard -

Business Office Manager

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Sherry wasn’t born here but got here as fast as she could and she’s been right here in Lubbock most of her life. Her education background is in Marketing and her life’s work has always been people-focused with the first half spent as an office manager and the subsequent +10yrs between marketing director, admissions director, and clinical liaison roles for skilled nursing facilities. She has two grown daughters and four grand-pups, in her spare time she enjoys gardening and being outdoors and loves reading and learning history and autobiographies. Sherry’s personal life has largely consisted of loving on and helping close relatives and friends in similar situations to the patient population served here at the Ranch, just one of the many reason why she loves both being here and getting to work with the team here!

Irma Limon -

Milieu Manager

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Irma has worked for RDT for over 3 years. Irma has worked in healthcare for over 5 years and has a servant's heart! She has a heart for the recovery community and strives to give our clients the best chance at beating the disease of addiction.