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Short Biography of Paul Mancillas, PhD

I was born in Downey California on July 10, 1956. My parents, Sal and Sally Mancillas, raised me in the cities of East Los Angeles and Montebello. My father was born in Los Angeles and was a restaurant owner for many years, until he passed away in 2007. My mother continues to work as a parent education teacher and pre-school coordinator for the Montebello Unified School District. She received her Masters degree in English with a minor in Psychology from California State University, Los Angeles. She continues to be an influential leader in the area of understanding child behavior and being an effective parent.

Dr. Paul Mancillas, PhD

Dr. Paul Mancillas, PhD

I attended Our Lady of Miraculous Medal or Marian School for 8 years. After graduating from Marian School, I attended Schurr High School for 3 years and I graduated in 1974. I immediately started college at East Los Angeles College and graduated in 1977 with an A.A. degree. I then attended California State University at Los Angeles, majoring in Psychology. I graduated in 1981 with my B.A. I then attended graduate school at the California School of Professional Psychology in Los Angeles and had 4 years of internship at various mental health facilities. I graduated from this school in 1986 with a PhD in clinical Psychology.

On August 4, 1984, I married my beautiful wife, Elsa. We continue in our happy marriage and we have 4 children, Monica, Elijah, Joshua, and Paul. We have two granddaughters, Samantha and Autumn.

I started working full time in the field of clinical psychology in 1985 as a psychological assistant. I was doing extensive psychological testing for inpatient psychiatric patients (Allages) at various psychiatric facilities in Los Angeles County. I was also involved with various outpatient practices, treating patients with individual, couples, and family psychotherapy. I also was doing psychological, psychoeducational, and neuropsychological testing during this time, including workers compensation and personal injury evaluations. In 1987, while continuing my private practice, I decided to accept a job offer at Lanterman Developmental Center in Pomona. This is a large institution, hospital, and residence for severe and profound mentally retarded adults. The patients presented with various conditions of brain impairment, and many had severe behavior problems. I retired from Lanterman Developmental Center at the end of June of 2014, after 27 years of service.

In 2001, I decided to return to school for additional training in a post doctoral program offering extensive training in neuropsychology at the Fielding Institute. I completed this program in 2004. I am now in my private practice full time in the city of Covina, primarily doing neuropsychological testing. I see patients of all ages. The different types of conditions which require my testing are well documented in other sections of this website.

I have also established a group of excellent doctors who assist me in my group practice. The practice is named Eastland Neuropsychology Group.