John Largen & Associates, Inc.
Professional Neuropsychology Group

1020 Holcombe Blvd., Suite 1304, Houston, TX 77030
Phone: 713-799-2818     Fax: 713-790-1454
E-mail:
office@largen-group.com
Meet our staff
John W. Largen, Ph.D.
Dr. Largen completed his Ph.D. in clinical neuropsychology at the
University of Houston in 1980. He entered private practice in 1989.
Since that time, he has expanded the practice to include two
additional clinical neuropsychologists, all of whom work together as a
group practice. For the past 11 years, Dr. Largen has also served as
an adjunct assistant professor at the University of Houston. In this
role, he provides supervision to graduate students in clinical
neuropsychology.
Robert N. Davis, Ph.D., ABPP
Dr. Davis completed his Ph.D. in clinical psychology (neuropsychology
specialization) at the University of Houston in 2003. After completing
his clinical internship at Duke University Medical Center, he completed
a postdoctoral fellowship at the Center for Neuroscience in Media, PA.
Dr. Davis is board certified in clinical neuropsychology with the
American Board of Clinical Neuropsychology.  
Kacey L. Maestas, Ph.D.
Dr. Maestas completed her Ph.D. in counseling psychology at The
University of Texas at Austin in 2009. She completed her clinical
internship at the Michael E. DeBakey VA Medical Center in Houston,
TX, where she received specialized training in neuropsychology. She is
working with us as she pursues licensure as a psychologist.
Sandra Thomas, M.A.
Sandra completed her bachelor's (2007) degrees in psychology and
intercultural communications and her master's (2008) degree in
psychology from Pepperdine University. She works with us as a

technician. Sandra is interested in all aspects of human development
and hopes to further pursue a career in either educational or school
psychology.
Amy Gonzales, B.S.
Amy completed her bachelor’s degree in marine biology at Texas A&M
University at Galveston in 2008. She is working with us as a technician
as she applies to various Texas medical schools. Amy hopes to
eventually practice as a primary care physician for a rural community.
Elizabeth Konrad, B.S.
Elizabeth completed her bachelor's degree in psychology at Texas
State University, where she graduated at the top of her class (summa
cum laude). She is currently pursuing a master's degree in public
health at the University of Texas - Houston School of Public Health.
She works with us as a technician who assists with test administration
and scoring.
Fedora Biney, B.S.
Fedora obtained her bachelor's degree in psychology from The
University of Texas at Austin in 2008. She is currently a graduate
student in the clinical psychology doctoral program (specializing in
neuropsychology) at The University of Houston. She is completing a
practicum with us as a part of her training.
La Juana Tucker
La Juana has been the office manager for John Largen & Associates
since 2000. Her background includes 23 years of experience in the
healthcare industry at all levels of service.
Pearl Secreta
Pearl is our friendly and courteous front desk administrator. She
facilitates appointment scheduling and confirmation, insurance
verification, checking in patients, and general office administration.
Tonia Dees
Tonia is our medical records scanning specialist. She also provides
support to Pearl and La Juana with general office administration.