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Meet our providers

Our Practice consist of multiple experienced Pain Specialist which all are Fellowship trained Anesthesiologist with Sub Specialty Certification in Pain Management. Many of our Pain Specialists hold an Academic Appointment with Loma Linda University Medical Center. Experience leads to better decisions, better outcomes and less complications.

Dr. Medhat Mikhael

Dr. Medhat Mikhael

As a highly experienced leader in the medical field, for more than 20 years, Dr. Medhat F. Mikhael fills the key roles of Founder, President and Medical Director of Pain Medicine Associates (PMA). His essential credentials include being double board certified in Anesthesiology and Pain Medicine. As a former resident of Egypt and a current resident of the United States, Dr. Mikhael is nationally and internationally recognized as a leader in the field of pain medicine. Dr. Mikhael received his Doctor of Medicine from Mansoura Faculty of Medicine in Mansoura, Egypt, which is where he also completed an internship. There he attained his Master’s Degree in General Surgery and Trauma Management. This has …Read More

Dr. Alan Ho

Dr. Alan Ho

Dr. Alan Ho is double board-certified in Anesthesiology and Pain Medicine. He grew up in the Bay Area and earned his undergraduate degree at the University of California, Berkeley. Having decided that his true passion was treating pain, he went on to complete his medical education at the University of California, San Diego. His outstanding achievements were recognized by many top institutions and he was accepted at the prestigious Columbia University to complete his Anesthesiology residency. He then returned to Southern California and completed his Pain Medicine fellowship at the renowned…Read More

Dr. Matthew Robinson

Dr. Matthew Robinson

Dr. Matthew Robinson is double board-certified in Physical Medicine & Rehabilitation as well as Pain Medicine, ranking as high as the 97th percentile on national board certification exams. He is a California native with his first degree earned from UC Davis, a Bachelor of Science with emphasis in Neurobiology, Physiology, and Behavior. He then relocated to Los Angeles for his medical training. He completed both residency and fellowship at UCLA where he served as the acting Chief Resident in one of the largest physiatry residencies in the nation. Throughout his career, he has served several healthcare…Read More

Dr. Andrew Nguyen

Dr. Andrew Nguyen

Dr. Nguyen is board eligible in Anesthesiology and Pain Medicine. He grew up locally in Long Beach, California and earned his undergraduate degree in Physiological Sciences at UCLA. His interest in pain medicine started in medical school at the Tufts University School of Medicine in Boston, Massachusetts. During his years at TUSM, Dr Nguyen helped establish a curriculum on pain for future physicians in training. After earning his medical degree from TUSM, he completed a surgical internship and anesthesiology residency at LAC+USC Medical Center in Los Angeles, California. He pursued…Read More

Dr. Andrew Hanna

Dr. Andrew Hanna

Dr. Andrew Hanna is a specialist in Pain Management and Physical Medicine & Rehabilitation. He received his neuroscience degree from UC Riverside. He graduated medical school at Touro University of Nevada where he received honors and a scholarship for his academic achievements. Dr. Hanna moved to Miami for residency and was awarded “Intern of the Year.” During his time in Miami he was asked to become chief but was accepted by UCLA for his final year of residency. After residency, he attended an …Read More

Dr Howard Dedes

Dr. Dedes enlisted in the United States Navy directly out of high school. He served, primarily as a hospital corpsman and field medical trainer, between 1993 and 1997. He earned a Meritorious Unit Commendation, National Defense Service Medal and other awards before being honorably discharged.

He then went on to earn his Bachelor of Science in Molecular Biology from the University of California – San Diego and his medical degree from the University of California Los Angeles – David Geffen School of Medicine. He completed his Physical Medicine & Rehabilitation residency at the prestigious UCLA multi-campus program that includes the Veterans Administration, Cedars Sinai Medical Center, Rancho Los Amigos National Rehabilitation Center and Children’s H…Read More

Vivian N Duong, MSN, APRN, FNP-BC

Vivian Duong enjoys her position as a board certified family nurse practitioner. She earned her license as a Vocational Nurse at CNI College in 2010, her bachelor’s degree at West Coast University in 2015, and her Master’s degree at California State of Long Beach University in 2020.

Vivian’s prior employment includes working at Hoag Hospital Irvine in the Emergency Department and Garden Grove Hospital in the ER and ICU departments.

As an individual who deeply cares about others, Vivian derives happiness from simply seeing patient’s smile as she helps contribute to their well-being. She describes her passion of being a nurse practitioner by stating: “I chose nursing as a career because…Read More

Elia L. Perez-S, MSN, NP-BC

Elia L. Perez-S, MSN, NP-BC

Elia L. Perez-S has been a nurse practitioner since 2000. She is a graduate of University of California at Los Angeles (UCLA) nurse practitioner program and received her Masters in Nursing. She is board certified with American Nurses Credentialing Center (ANCC). She worked in neurosurgery for over 10 years. There, she became familiar with conditions of the neck and back, including degenerative disc disease, spondylosis, spondylolisthesis, spondylolisthesis, stenosis, radiculopathy, neuropathy, etc. She has worked in pain management since 2015. She is fluent in Spanish.

Dawn Vollmann PA-C

After many years of working close with children and families, Dawn decided to follow her passion in medicine and has been since enjoying her time helping others to lead their best lives through caring for their personal medical needs. She holds a Bachelor’s Degree in Child Development from California State University, Fullerton and graduated from Western University of Health Science with her Master’s Degree in Physician Assistant Studies.
Dawn likes to stay active and enjoys camping, quick getaways and spending time with her children.