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 his practice to include two additional
clinical neuropsychologists, all of whom work together as a group
practice. For the past 10 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.
Jennie L. Rexer, Ph.D.
Dr. Rexer completed her Ph.D. in clinical neuropsychology at the
University of Houston in 2001, and joined John Largen & Associates in
2002.  She completed her internship at Henry Ford Hospital in Detroit,
MI, and one year of postdoctoral training at Barrow Neurological
Institute in Phoenix, AZ.  
Robert N. Davis, Ph.D., ABPP-CN
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.  
Victoria Armstrong, M.A.
Victoria obtained both her bachelor's (2000) and master's (2003)
degrees in psychology from California State University - San
Bernardino. She is currently a doctoral candidate in the clinical
psychology program (neuropsychology specialization) at the
University of Houston. Ms. Armstrong has joined the practice as part
of her on-going professional training.
Sara Lippa, B.A.
Sara majored in cognitive science at the University of Virginia,
graduating with a B.A. in 2007. She is currently a graduate student at
the University of Houston, where she is pursuing a Ph.D. in clinical
psychology (neuropsychology specialization) and is completing a
practicum experience with us as part of her training.
Elizabeth Konrad, B.S.
Elizabeth completed her bachelor's degree in psychology at Texas
State University, where she graduated top of her class (summa cum
laude). She has joined the practice as a neuropsychology technician
who will be testing and scoring for us until she begins her doctoral
degree in clinical psychology.
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 Mayberry
Pearl is our front desk coordinator. She facilitates appointment
scheduling, insurance verification, and checking in patients.
Tonia Dees
Tonia is our medical records scanning specialist. She also provides
support to Pearl and La Juana with general office administration.