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Valley Psychological Services, P.C. is located next to one of it's best partners Doctor's Hospital at Renaissance. Dr. McCoy is a partner at DHR as well and involved in the development of behavioral health services in Doctor’s Hospital at Renaissance Health System and consults throughout the system including at Behavioral Hospital at Renissance. VPS had its genesis in the partnership of Dr. Joseph McCoy (licensed psychologist) with Drs. Matt Johnson and Steve Havener (family physicians) to create an environment that allowed for collaborative care for the primary care patient. Dr. McCoy remains indebted to their generosity and the seven years they served Mission together. (read more)

Meet Our Team:

Dr. Joseph McCoy, Ph.D. is a graduate of the Medical Psychology Program at the University of Alabama at Birmingham, one of the nation's top 10 medical research institutions (when measured by the amount of annual research grant monies received). As a Licensed psychologist he has a Ph.D. in clinical psychology from UAB. Psychologists have the most in-depth training in mental health care of any of the mental health providers. One of Dr. McCoy's expertise is understanding the role of choices, behaviors, and (read more)


Dr. Monica Hernandez, Ph.D. is a licensed psychologist who graduated with a Ph.D. in clinical psychology from Walden University and is a graduate from the Lone Star Psychology Residency Consortium post-doctoral residency program. Her focus as a consultant with VPS is to provide psychological evaluations of all types spanning the age range. She performs evaluations for learning disabilities, autism spectrum disorders, DARS, general psychological evals, and adaptive behavior among others. She too is bilingual and a Valley native.
Dr. Alfonso Mercado, Ph.D., originally from Los Angeles, California, currently provides psychological services to children, adolescents, and adults including individual therapy, specialized group therapies, and conducts psychological evaluations. Dr. Mercado received his BS and MS degrees in psychology at California Lutheran University in Thousand Oaks, California. Dr. Mercado completed his doctoral academic studies at Fielding Graduate University, an APA accredited program, receiving a PhD in Clinical Psychology and completed his pre-doctoral internship at the Multicultural Psychology Internship Program of Massachusetts and his postdoctoral fellowship at Valley Psychological Services. His current research interests focus on Latino mental health, clinical treatment outcome studies, and multicultural interventions. He is a Licensed Psychologist in Texas. In addition to his professional career, Dr. Mercado also serves his community in several capacities. He is an active member of the Texas Psychological Association where he serves as the Diversity Division Co-Chair, member of the American Psychological Association, and is a board member at two different non-profit organizations.
Dr. Gary Leka, Ph.D. is a Licensed Psychologist who graduated from the Walden University Doctorate in Clinical Psychology. As a clinician at Valley Psychological Services he provides psychological evaluations for all age ranges including evaluations for (but not limited to): general psychological evaluations; autism spectrum disorders; AD/HD; cognitive functioning; pre-gastric bypass procedures, pre-spinal cord stimulator implants; and law enforcement pre-employment screenings. Dr. Leka also has close to 20 years of experience as a psychology lecturer with a local university.
Dr. Kim Nguyen-Finn, Ph.D., LPC-S has over 16 years of experience as a mental health counselor and Texas Licensed Professional Counselor Board-approved Supervisor. Aside from providing individual, family, and couples counseling for a wide range of issues, including anxiety disorders, OCD, depression, trauma resolution, and gender identity, she is a lecturer at UT-Pan American in Rehabilitation Services. Prior to joining VPS, she was a supervising clinical therapist at UTPA for over 15 years. Ms. Finn was raised in a military household and earned her Master’s of Arts in Educational Psychology from the University of Texas at San Antonio, before moving to the Valley as soon as she could. She recently was awarded her Doctorate in Rehabilitation Counseling from UTRGV in December of 2018.

Last Updated April 18, 2019