SDSPA Board Members



Tim O'Neil, PA-C


Immediate Past President

Emily Mangano, PA-C

Emily Mangano is Physician Assistant practicing in Women's Health in Downtown San Diego, as well as part time in Urgent Care in North County. She graduated with a Masters Degree in PA Studies from the Touro College Physician Assistant Program in New York in 2014. Originally from New Jersey, she graduated from Rutgers University with a Bachelor of Biological Sciences degree in 2012. She also worked there as a Medical Assistant in Pediatrics for 3 years and was a certified EMT. She is a member of CAPA and AAPA as well.

Working at a state funded clinic and with lower income patients, she is committed to finding the best possible solutions for patients as well as patient advocacy. Emily is devoted to advancing the Physician Assistant profession in San Diego through continuous learning and networking.


Vice President

Roxanna Calvario, PA-C


Jennifer Cates, PA-C


Mark Hartmann, PA-C

MarkMark is nationally certified and state licensed as a Physician Assistant. Mark graduated from the University of California, Davis Medical School/Physician Assistant Program in 2002 after completing his undergraduate studies at the University of California, San Diego graduating with a bachelor’s degree in psychology in 1995.

Mark is employed with Scripps Coastal Medical Group in Solana Beach and specializes in family medicine.
Mark holds membership in the American Academy of Physician Assistants as well as the California Academy of Physician Assistants. Mark is active in the San Diego Physician Assistant Society and regularly trains physician assistant and nurse practitioner students.

Mark was born and raised in Southern California. He enjoys sports and spending time with his young family.

Community Service Chair

Joseph Hortillosa, PA-C

Student Liaison

Timothy O'Neil, PA-C

Immediate Past President

Mercedes Dodge, PA-C

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Mercedes Dodge is a practicing Physician Assistant in Family Medicine in Encinitas, California. She completed her Physician Assistant studies at the University of California Davis Family Nurse Practitioner/Physician Assistant Program.

She is a member of California Academy of Physician Assistants and American Academy of Physician Assistants. She served on the CAPA Board from 2007 to 2010, first as Student Representative and then lastly as Committee of Diversity Chair. She has been a member of the San Diego Society of Physician Assistants since her move to San Diego in 2008.

She enjoys hiking, running and spending time with her two young boys.

Past President

Bernard Casillan, MS, PA-C

IMG_0952Bernard Casillan, a graduate from Western University, has been practicing since 2003.  He currently runs a family practice in City Heights and works part-time in Urgent Care and as a sub-contractor screening pre and post-deployment Veterans for medical readiness and PTSD.  Bernard’s main focus is serving the low-income high needs community.  He believes in fostering unique relationships with each individual patient based on distinctive needs.  Moreover, he believes in finding innovative and effective ways to make a big difference in treatment and medication compliance.  As a Native San Diegan, he believes in community building.  He is Team Captain for Breast in the West, a group that advocates for Breast Cancer Awareness through the Susan G. Komen Foundation.

Since 1993 he has been a facilitator for Project Heart to Heart a group that fosters communication and relationship building between first generation American high school students with their immigrant parents.  He enjoys martial arts, obstacle races, San Diego sports, and spending time with Family

Past President

Robin V. Caballa, MS, PA-C

RobinRobin Caballa graduated from Western University of Health Sciences in Pomona, California and completed a Surgery Physician Assistant Residency at Arrowhead Regional Medical Center in San Bernardino County, California. She worked in private practice in Dermatology in Laguna Hills, California prior to working in the Department of Plastic Surgery at the Naval Medical Center San Diego.

Currently, she works in the Department of Oral and Maxillofacial Surgery as well as the C.A.R.E. Program (Comprehensive Advanced Restorative Effort), a subdivision of the C5 Department (Comprehensive Combat and Complex Casualty Care) at the Naval Medical Center San Diego.

The C.A.R.E. Program is a multidisciplinary team (Plastic Surgery, Dermatology, Orthopaedic Surgery, Oral and Maxillofacial Surgery, Otolaryngology, and Oculoplastics) that focuses on advancing the aesthetic, functional, and emotional recovery of traumatically injured service members and their dependents.

Robin was born and raised in San Diego and is committed to supporting the Physician Assistant profession in the San Diego area.

Past President

Patrick Astourian, MS, PA-C


Patrick has experience in Urgent care, Rheumatology, and Orthopaedics and was a United States Air Force Medic for 8 years.

He has been using musculoskeletal ultrasound since October 2006 and was a speaker on musculoskeletal ultrasound at the American College of Rheumatology Annual Meeting in Boston, Massachusetts in November 2007. Patrick has given hands-on musculoskeletal training to various physicians in Pain Management, PM&R, Rheumatology, Sports Medicine, and Orthopaedics.

Patrick currently works as a PA at Grossmont Orthopaedics and is an owner of the San Diego Stem Cell Treatment Center.


Past Vice President

Kim Zuber, PA-C

Kim Zuber, PA-C tried to retire after 30 years of PA practice but instead spends her time teaching 'all things kidney' with over 125 oral presentations, 45 peer-reviewed articles and 3 guest editorships. She graduated from UCSD with a bachelor’s in molecular biology and chemistry, picked up a teaching credential at San Diego State University and taught high school for many years. Deciding that medicine had to be easier than teaching teenagers, Kim attended the St. Louis University PA program.

She has been involved in the kidney community for the last 25 years picking up Renal Professional of the Year 2014 for her work. She is an AAPA Distinguished Fellow and was selected as Outstanding PA of the Year in 2014.

Founder of SDSPA and Past CAPA President

Jeremy Adler, MS, PA-C

2017 Board Members

President - Mercedes Dodge, PA-C
Vice President - Emily Mangano, PA-C
Secretary -  Ana Goldberg, PA-C
Treasurer - Mark Hartmann, PA-C
Community Service - Joseph Hortillosa, PA-C
Supporting Role - Kim Zuber, PA-C


2016 Board Members

President - Bernard Casillan, PA-C
Vice President - Mercedes Dodge, PA-C
Secretary - Ana Goldberg, PA-C
Treasurer - Mark Hartmann, PA-C
Social Events - Emily Mangano, PA-C
Community Service - Joseph Hortillosa, PA-C


2015 Board Members

President - Bernard Casillan, PA-C
Vice President - Mercedes Dodge, PA-C
Secretary - Mercedes Dodge, PA-C
Treasurer - Mark Hartmann, PA-C
Social Events - Emily Mangano, PA-C
Community Service - Joseph Hortillosa, PA-C
Webmaster - Patrick Buan, PA-C

2014 Board Members

President - Robin Caballa, PA-C
Vice President - Bernard Casillan, PA-C
Secretary - Mercedes Dodge, PA-C
Treasurer - Mark Hartmann, PA-C
Patrick Astourian, PA-C
Jeremy Adler, PA-C

2013 Board Members

President - Patrick Astourian, PA-C
Vice President - Robin Caballa, PA-C
Secretary - Mercedes Dodge, PA-C
Treasurer - Mark Hartmann, PA-C
Bernard Casillan, PA-C
Jeremy Adler, PA-C