David Morris, MD

Chief Medical Officer

Before coming to D.A.P., in January 2016, Dr. Morris was Medical Director and Attending Physician at Pride Medical, an LGBT-oriented clinic in Atlanta, from 1999 to 2015. He is a certified HIV Specialist and Board-Certified Family Medicine Physician, with a proven commitment to medical excellence spanning 28 years of hospital and outpatient clinical […]

Phyllis Ritchie, MD

Senior Physician Specialist

Dr. Phyllis Ritchie is a board certified Infectious Disease specialist.  Originally from San Francisco, she received her undergraduate BA degree from San Francisco State University, majoring in Italian. Dr. Ritchie went to medical school at Chicago Medical School and completed her Internal Medicine Residency at Loyola University Medical Center.  Dr. Ritchie received specialty training in […]

Howard A. Aronow, MD

Howard Aaron Aronow, MD, or Aaron as everyone including his patients call him, is currently Associate Professor of Clinical Neurology and Medicine at the USC Keck School of Medicine where he has been on faculty since 1990. At present, he directs the HIV Neurology program part-time, but is happy to also join us part-time at Desert AIDS […]

Timothy Carroll, PhD

Clinical Psychologist Mental Health

Timothy Carroll, Ph.D., joined Desert AIDS Project in 2016, the same year he moved to Palm Springs. He formerly worked for Kaiser Permanente in Santa Rosa in the Department of Psychiatry for 17 years. Dr. Carroll specializes in working with mindfulness, cognitive behavioral therapy, and dialectical behavioral therapy. He is originally from a small town […]

David L. Scott, MD


David Scott, MD is a psychiatrist who previously had a career in Adolescent Medicine. He graduated from Case Western Reserve University School of Medicine and completed his psychiatric training at University Hospital Case Western Reserve School of Medicine. He has more than 10 years experience helping transgender individuals transition using the standards of care recommended […]

Jim Cox, DC


After touring D.A.P. and learning that chiropractic was not currently available, Dr. Jim Cox agreed to begin offering his services in The DOCK on Fridays from 9:00 AM – 5:00 PM, beginning August 5th. Additional hours and days of chiropractic service will be […]

Daniel Jo, DDS


Dr. Daniel Jo was born and raised in Orange County, California and has lived in Southern California his entire life. He began working at D.A.P.’s Dental Clinic in August 2015 and finds it fulfilling to work at a nonprofit organization providing dental care to our underserved clientele. His hobbies include going to the gym, video […]

Shubha Kerkar, MD

Physician, MACP

Dr. Shubha Kerkar has the distinction of serving at the Desert AIDS Project (D.A.P.) for over 2 decades – longer than any current staff members! Dr. Kerkar is Board Certified in Infectious Diseases and for 12 years has maintained certification and credentialing by the American Academy of HIV Medicine-AAHIVS. She has been nominated as the Top Doctor in Infectious Diseases by […]

Matt Moran, Senior Nurse Practitioner Specialist


Mr. Moran is an Advanced Practice Nurse Practitioner (APNP). He has specialized, post-graduate education and training in the treatment of Human Immunodeficiency Virus (HIV) infection, and he has completed a Fellowship in HIV Medicine. Additionally, Mr. Moran has received the advanced education and training required to perform high-resolution anoscopies, used in the diagnosis and treatment […]

Tulika Singh, MD, MS AAHIVS

HIV Primary Care Physician, ID Specialist

Dr. Singh is a Board Certified HIV Specialist, and an Infectious Disease and Internal Medicine Physician, working in HIV care since 2009. Prior to joining the Desert AIDS Project, she worked as a Primary Care and Infectious Disease Specialist at North Ottawa Community Hospital in Grand Haven, Michigan, and an HIV Specialist at Mercy Health […]

Daniel Parker, PhD

Director of Behavioral Health

Dr. Daniel Parker is a clinical psychologist with the Behavioral Health Services Department at Desert AIDS Project. Dr. Parker has over 20 years of experience providing mental health services […]

Anthony Velasco


Anthony Velasco is an Adult-Gerontology Primary Care Nurse Practitioner and has been working in HIV care since 2010. Prior to joining the Desert AIDS Project, he worked as a clinical nurse supervisor at UC San Diego Health in an acute medicine unit specializing in HIV, tuberculosis, hepatitis, opportunistic infections, and AIDS-related cancers. Mr. Velasco earned […]

Hector Paul Vizoso


Helping to keep our operations running smoothly in the health center is Hector Vizoso as D.A.P.’s Clinical Quality Improvement Coordinator/Nurse Manager. Fluent in Spanish, he prides himself on being a creative problem solver and leader, adept at managing projects and people while providing support and promoting a cohesive […]

Ryan Yamashiro, DDS


Dr. Ryan Yamashiro graduated from Loma Linda University School of Dentistry and has been working at D.A.P.’s dental clinic for a little over 2 years. He is originally from Hawaii but now lives in Southern California. In his free time, he enjoys hiking, surfing, and traveling.

Christopher Foltz, MD

Internal Medicine

Prior to joining Desert AIDS Project, Dr. Foltz was located in Los Angeles where he completed his training in Internal Medicine and Infectious Disease. He is currently Board certified in Internal Medicine. Originally from the Midwest, Dr. Foltz was born and raised in a suburb of Kansas City, KS. He completed his undergraduate education, majoring […]

Rodney Fox

Nurse Practitioner

Rodney Fox is a Nurse Practitioner, from a small Appalachian town in rural Tennessee, graduated from East Tennessee State University with a Bachelor of Science in Nursing, in 1997. Upon graduation, he moved to Atlanta, GA where he worked as a Registered Nurse in General Medicine, followed by Emergency and Trauma, and then eventually moving […]

Trent Broadus

Nurse Practitioner

Trent Broadus has been providing both HIV/AIDS care and Hepatitis treatment since 2013. Originally from Mississippi, he received his Bachelor of Science in Nursing from the University of Southern Mississippi. Prior to 2013, Trent practiced internal medicine utilizing his critical care background. He worked for many years at Sharp Healthcare in San Diego as a […]

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