Our Team
Clinical Psychiatric Team
Alejandro Alva, MD, Chief Medical Officer, CEO
Alejandro Alva, MD, is the CEO and Chief Medical Officer of Pacific Neuropsychiatric Specialists (PNS). Dr. Alva is a pioneer in Neurostar TMS treatment, psychotherapy, clinical testing, addiction, and mental health.
Mohammed A. Shreiba, MD
Mohammed A. Shreiba, MD is a Psychiatry Physician at Pacific Neuropsychiatric Specialists (PNS) specialized in psychiatry, psychotherapy, and mental health.
Norberto Tuason, MD
Norberto Tuasan, MD is a Psychiatry Physician at Pacific Neuropsychiatric Specialists (PNS) specialized in adult psychiatry, child psychiatry, and mental health.
Jeannette Hanna, MD
Jeannette Hanna, MD is a Psychiatry Physician at Pacific Neuropsychiatric Specialists (PNS) specialized in adult psychiatry, child psychiatry, and mental health.
Tshekedi Dennis, MD
Dr. Tshekedi Dennis, MD is a Psychiatry Physician at Pacific Neuropsychiatric Specialists (PNS) specialized in psychiatry, psychotherapy, and mental health.
Yvette Elpidio, MSN, FNP-C
Yvette Elpidio, Nurse Practitioner, MSN, FNP-C, is a certified family Nurse Practitioner at Pacific Neuropsychiatric Specialists (PNS) specialized in psychiatry, mental health, and medical weight loss.
Sheena Patel, PA-C, CAQ-Psych, Supervisor of Provider Services
Sheena Patel, PA-C, is a nationally board-certified Physician Assistant at Pacific Neuropsychiatric Specialists (PNS) specialized in psychiatry and mental health.
Jennifer Sebastian, PA-C
Jennifer Sebastian, PA-C, is a nationally board-certified Physician Assistant at Pacific Neuropsychiatric Specialists (PNS) specialized in psychiatry and mental health.
Alex Mulé, PA-C
Alex Mulé, PA-C, is a nationally board-certified Physician Assistant at Pacific Neuropsychiatric Specialists (PNS) specialized in psychiatry and mental health.
Brandon Stutz, PA-C
Brandon Stutz, PA-C, is a nationally board-certified Physician Assistant at Pacific Neuropsychiatric Specialists (PNS) specialized in psychiatry and mental health.
Sarah Kantelis, PA-C
Sarah Kantelis, PA-C, is a nationally board-certified Physician Assistant at Pacific Neuropsychiatric Specialists (PNS) specialized in psychiatry and mental health.
Suneena Pokkamthanam, PA-C
Suneena Pokkamthanam, PA-C, is a nationally board-certified Physician Assistant at Pacific Neuropsychiatric Specialists (PNS) specialized in psychiatry and mental health.
Jessica Cuevas, PA-C
Jessica Horning, PA-C, is a nationally board-certified physician assistant at Pacific Neuropsychiatric Specialists (PNS) specialized in psychiatry, Nuerostar TMS, and mental health.
Erin Ortiz, PA-C
Erin Ortiz, PA-C, is a nationally board-certified Physician Assistant at Pacific Neuropsychiatric Specialists (PNS) specialized in psychiatry and mental health.
Andrew Johnson, PA-C
Andrew Johnson, PA-C, is a nationally board-certified Physician Assistant at Pacific Neuropsychiatric Specialists (PNS) specialized in psychiatry and mental health.
Kelly Yang, PA-C
Kelly Yang – PA-C, is a nationally board-certified Physician Assistant at Pacific Neuropsychiatric Specialists (PNS) specialized in psychiatry, and mental health.
Joseph Nojan, PA-C
Joe Nojan, PA-C is a physician assistant who works with adults and adolescents to help them overcome their mental health challenges and take back control of their life.
Jea Yoo, PA-C
Jea (Jae) Yoo, PA-C is a board-certified Physician Assistant at Pacific Neuropsychiatric Specialists who treats patients at the practice’s office at Orange, California.
Nicole Olivas, PA-C
Nicole Olivas is a board certified Physician Assistant who specializes in psychiatry because she believes in the importance of mental health and increasing access to quality care.
Timothy Vong, PA-C
Timothy Vong, PA-C is a certified Physician Assistant at Pacific Neuropsychiatric Specialists. Over the last year, Timothy has garnered the respect of his community and fellow health care providers with his enthusiasm in helping those in need of psychiatric care.
Sung Jin (Steve) Park, PA-C
Sung Jin, or “Steve” Park, PA-C is a physician assistant at Pacific Neuropsychiatric Specialists. Steve is trained to diagnose, manage, and treat patients with various psychiatric conditions.
Kellyn Perham, PA-C
Kellyn Perham, MMS, PA-C is a Physician Assistant, specializing in mental health and substance use disorders. She partners with adolescents to adults, diagnosing and treating psychiatric conditions.
Mike Santillan, PA-C
Michael “Mike” Santillan, PA-C is a Nationally board-certified Physician Assistant at Pacific Neuropsychiatric Specialists where he diagnoses, treats and aide’s individuals with their psychiatric disorders.
Tatiana Gheybi, PA-C
Tatiana Gheybi, PA-C is a board-certified Physician Assistant who works for Pacific Neuropsychiatric Specialists and provides care to patients of all ages.
Michael Choi
Michael Choi, PA-C, is a nationally board-certified Physician Assistant at Pacific Neuropsychiatric Specialists.
Board of Executive Directors
Pepper Alva, President
Patricia “Pepper” Alva is a proven and highly effective Medical Executive with 15 years experience in the pharmaceutical industry and has been in leadership at PNS since 2015. Pepper has a Bachelor’s Degree from the College of New Jersey and an Associate’s Degree from Mercer County Community College.
Executive Team
Rachel Ramirez, Director of Special Projects & Process Improvement
Rachel has broad experience in the management of Rehabilitation Facilities, and Medical Offices. Additionally, has contributed creating and applying new processes that are essential at PNS for the comfort and care of our patients.
Leadership Team
Daniela Vasquez, Executive Account Manager
Daniela has been with PNS for several years and has experience in all areas of operations and administration. She has an exceptional work ethic and is a key member of our team.
Daniela works with both Dr. Alejandro Alva and Pepper Alva on Addiction Medicine Management and overall implementation of projects.
Danielle Mann, Director of Human Resources
Danielle Mann has over 10 years of Human Resource and Management experience. She has been a successful part of leadership teams where she strengthened company-employee relationships, coaching and change management, and created multiple learning and development programs for employees. She is excited to be part of the PNS team and to help continuously improve an awesome culture and employee experience.
Danielle holds a Bachelor’s Degree in Social and Criminal Justice and is passionate about helping others. She feels that working at PNS has been very rewarding because everyone here is like family and they all strive to help our patients feel their best!
Lauren Way, MA, Senior Project Manager
Lauren is the Mission Viejo Senior Project Manager at PNS, as well as a certified TMS technician, and a Medical Assistant with 10 years of experience. Lauren has a passion for helping others, and enjoys making a difference in other’s lives.
Lauren works hard to make her office as welcoming as possible for both new and returning patients, and strives to make patients feel like family. Lauren’s interests outside of work include archery, hiking, and spending time with her family and pets.
Cindy Gloria, MA, Office Manager
Orange
Cindy is a veteran in the medical field, she strives to provide the best care in the interest of our patients. Aligned with the Pacific Neuropsychiatric Specialist mission statement, she treats all patients with respect and passion as a Manager.
Cindy is continuing her studies in nursing. She is a great patient advocate and strongly supports not all wounds are visible.
Samantha Juarez, Office Manager
Costa Mesa
I am beyond happy to a part of an amazing team like Pacific Neuropsychiatric Specialist. Having served PNSOC as a Patient Care Coordinator, a TMS Technician, and now as an Executive Assistant – I continue to live out my passion for serving the needs of our patients and delivering the best quality care possible.
PNS is a great facility and I am proud to be a part of such a caring and compassionate team.
Luther Tolbert, CPT, Office Manager
Huntington Beach
Luther has over 10 years experience in the medical field and has experience in management, operations, and clinical laboratory. Luther is passionate about providing great customer service and always looks to exceed expectations.
When not working at PNS he enjoys coaching football and spending time with his family.
Samantha Small, Office Supervisor
Mission Viejo
Bio coming soon…
Bianca Luna, Office Supervisor
Santa Ana
Bio coming soon…
Top-Trained
We employ top-trained psychologists, psychiatrists, and psychiatric nurse practitioners.
Passionate Team
We've carefully assembled a team whose passion is to serve others with a purpose.
Award Winning
Dr. Alejandro Alva is an award winning and internationally recognized psychiatrist.
Most Renowned
We are Orange County's most renowned psychiatrist practice.
Contact Us
Please contact us with questions
or requests for an appointment.