Rizwan Khan, PAC

Psychiatric Physician Assistant

Rizwan Khan, PAC has joined our practice as a psychiatric physician assistant (PA) under the direction of Dr. Bruce Hubbard. He has been a PA since 2009, having recently relocated to San Diego from Seattle in November, 2017. Rizwan has worked in the mental health field for the last ten years since graduating from University of Washington Medical School. 

Rizwan fluently speaks English, Hindi, Urdu and Punjabi. 

Rizwan believes that every patient has their own personal dynamics and challenges. A medication that works for one patient may not work for another with the same diagnosis. Listening to each individual’s needs and taking into consideration their unique biochemistry, family history, coping skills, and life circumstances is vital to achieving success.

Riz Khan

Karishma Patel, M.D.


Dr. Karishma Patel is a board-certified psychiatrist who completed her psychiatry residency at Albert Einstein Montefiore Medical Center in New York, New York and her child and adolescent psychiatry fellowship at Loma Linda University in Redlands, California. She has treated adults and adolescents with a broad range of symptoms and diagnoses including Anxiety Disorder, Depression, Bipolar Disorder, ADHD, PTSD and Adjustment Disorder.

Dr. Patel is passionate about helping adolescents and teens, and feels that her warmth, compassion, patience and experience help her to connect with young people who are struggling. These patients need a nonjudgmental provider who hears them and inspires trust and a sense of calm in what can be a difficult time in their young lives. 

Dr. Patel is trained in Eye Movement Desensitization and Reprocessing (EMDR) Therapy, Psychodynamic Psychotherapy, Cognitive Behavioral Therapy, and Dialectical Behavioral Therapy. 



Twin Towers Correctional Facility

(September 2020- present)

Served as a general psychiatrist with an adult population.

Phoenix Community Counseling

(July 2019-June 2021)
Served as an outpatient child and adolescent psychiatrist providing medication management and therapy services.

Loma Linda University Behavioral Health Institute

(July 2019-June 2021)

Served as a child and adolescent psychiatrist in partial hospitalization programs, intensive outpatient programs, and outpatient clinics. Provided medication management and therapy services.


University of Southern California - Adult Inpatient Psychiatry

(June 2015)

University of California Los Angeles- Adult Inpatient Psychiatry

(August-September 2015)

Professional/ Volunteer Activities

Eye Movement Desensitization and Reprocessing Training and Certification

January 2021-present

Period Movement

Global non-profit organization fighting to end period poverty by ensuring that individuals in need have access to period products required to participate fully in daily life, August 2019-present

Wellness Chief Fellow

Aimed at optimizing the core values of physical, mental, professional, intellectual, emotional, and social well-being. Organized and planned monthly wellness activities, team building projects, monthly check in meetings with each fellow. Implemented a Burnout/Wellness Survey for faculty which will be used yearly by the program. Loma Linda University Medical Center July 2019- June 2021

Big Brother Big Sisters Organization

Big Sister in Mentoring Children of Prisoners Initiative (Kansas City Division), November 2013 – May 2016.
Responsibilities included mentoring and doing activities with a child who had an incarcerated parent once per week.

Solstice Times Square

Provided free yoga classes, June 2018 – June 2019

Books through Bars

Volunteer program in New York that provides free donated books to people in prisons across the country,
July 2016- June 2019

Food and Water Watch

Volunteer program that encourages healthy food and clean water in corporations to improve people’s lives and protect our environment, July 2016- June 2019

Planned Parenthood

Participation in volunteer nights that raised sexual education awareness and provided Safer Sex kits to adolescents, July 2016- June 2019


Montefiore Medical Center- Bronx, NY 2017-2019
Research, Quality Improvement Project

Loma Linda University- Redlands, CA 2020-2021
Research, Quality Improvement Project

Presentation “Burnout” to faculty and fellows at Loma Linda University, 7/22/20

Presentation “What is Childhood Trauma?” to faculty and fellows at Loma Linda University, 12/9/20

Presentation “Deafness and Mental Health in Children and Adolescents” to faculty and fellows at Loma Linda University, 1/6/21

Presentation “The Impact of Covid-19 on Mental Health in Children and Adolescents” to faculty and fellows at Loma Linda University, 2/3/21

Grand Rounds Presentation “EMDR in Children and Adolescents” to faculty and fellows at Loma Linda University, 2/10/21

Licenses and Certifications


Board Certification in Psychiatry by the American Board of Psychiatry and Neurology

State Licenses

California, Full, Exp. Date