The Best Education and Training leads to Optimal Patient Outcomes!

Meet Our Team

Dr. James Petros is the Founder and Chief Executive Officer of Allied Pain & Spine Institute and Managing Member of Trinity Surgery Center. In addition to healthcare executive responsibilities, Dr. Petros continues to also fulfill his professional passion actively for treating new and established patients with the most advanced pharmacologic, rehabilitative, restorative, and minimally invasive solutions available today. His clinical goal in every case is simple: diagnose root cause and maximize quality of life in the most efficient, conservative, and cost-effective way possible— one customized step at a time.


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Dr. Parish Vaidya joined Allied Pain & Spine Institute as an Interventional Pain Specialist in 2015. Based on his stellar track record in patient care, leadership qualities, love for teaching, and refined knowledge and experience in comprehensive pain management, he was named Chief Medical Officer of Allied Pain & Spine Institute in 2019.

Dr. Vaidya’s personable and whole-person approach coupled with outstanding dedication to compassionate healing set the new standard in state-of-the-art pain care. His caliber and diversity of skill in interventional pain management, non-surgical & regenerative musculoskeletal/orthopedics, electrodiagnostics, and integrative medicine are matched by a rare few across the country.


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Dr. Richard Keyme is a double-board certified physician with a special interest in low back pain, because he has been personally living with it for the last 20 years. He graduated from University of Pennsylvania with degrees in Biomedical Science and Psychology, then taught high school for 3 years as a science teacher, then earned his medical degree from University of Illinois in 2013, followed by completing residency at Stanford University in 2017. During medical school, he received Granville A. Bennett award for excellence in medical education and represented the student body during all 4 years.


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Dr. Polsunas took a nontraditional path to his career in medicine. Looking to ease the aches and pains accumulated over years of participating in a variety of adventure sports, he discovered the practice of yoga, a passion for which led him to become a yoga teacher. In that role, he was privileged to watch people work through a variety of musculoskeletal and psychosocial ailments. It did not take long to realize that he wished to be more fully able to help people achieve their goals and a better quality of life as a physician.


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Sameera Alocozy, MD, completed residency training in Physical Medicine and Rehabilitation at Albany Medical Center in New York. She has a special interest in the nonsurgical treatment of musculoskeletal injuries and back pain. She graduated from the University of California Berkeley with a degree in Integrative Biology and obtained her medical degree from Creighton University School of Medicine in 2017.


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Dr. Michael Beckman is a board-eligible Physical Medicine and Rehabilitation physician with specialized training in Interventional Pain Management.

He completed a degree in Business Administration from UC Berkeley and worked as a transaction analyst at a Big 4 accounting firm in San Jose. He then pivoted to medicine, completing his post-baccalaureate at CSU Fullerton and graduated from medical school at Saint Louis University in Missouri. During medical school, he co-founded an incubator to help multidisciplinary teams from the school commercialize their products. He then completed a Physical Medicine and Rehabilitation residency at UC Irvine.


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Board-certified in Physical Medicine and Rehabilitation, Sports Medicine, and Electrodiagnostic Medicine.

Patrick Wong, MD, board-certified in physical medicine and rehabilitation and Fellowship-trained in sports medicine and interventional spine procedures, specializes in nonsurgical treatment of musculoskeletal injuries, back pain, and neuromuscular injuries.

In 2001, Dr. Wong received his bachelor’s degree in molecular cell biology from the University of California at Berkeley. In 2005, he earned his medical degree from The Chicago Medical School at Rosalind Franklin University of Medicine and Science.


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Yetinayet Dagne is a board-certified Family Nurse Practitioner specializing in pain medicine. She joined Allied Pain & Spine Institute in 2022.

Yetinayet was born in Ethiopia and raised in the Bay Area for the past 20 years. She attended San Jose State University where she earned her Bachelor of Science degree in Nursing with a minor in Psychology in 2016. During her undergraduate studies, Yetinayet worked as caregiver for geriatric clients and further expanded her knowledge in patient care. As a fully accredited and licensed registered nurse with over four years of experience, Yetinayet brings both inpatient and outpatient medical knowledge.


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Rachelle Dudero is a board-certified Physician Assistant specializing in Pain Medicine. She joined Allied Pain & Spine Institute in 2020.

Born and raised in the Bay Area, Rachelle earned her Bachelor of Science degree in Kinesiology with an emphasis in Athletic training and minor in Nutritional Sciences from San Jose State University. Rachelle had always had an interest in sports/musculoskeletal injuries and a passion for functional rehabilitation. During her undergraduate studies, Rachelle interned with the San Jose State University football sports medicine staff. There she was able to learn how to respond to acute sport injuries and observe multiple treatment options. While applying for graduate school, she accumulated numerous hours as a physical therapy trainer assisting patients with rehabilitative and corrective exercises as well as applying therapeutic modalities to help promote healing and to manage both acute and chronic pain. She then proceeded to earn her Master of Physician Assistant Sciences degree at Saint Francis University in Loretto, Pennsylvania. There she gained clinical practice experience in many different specialties to include Trauma/General Surgery, Emergency Medicine, and Orthopedics.


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Dr. Raeda Joudy is an experienced licensed Clinical Psychologist who joined Allied Pain & Spine Institute in 2020. Guided by her philosophy that a mind, body, and spiritual approach towards healing can be ubiquitously transformative, she is impassioned in coaching patients at Allied Pain & Spine Institute to engage emotional coping skills, realize increased daily function, and enjoy a higher quality of life.

Dr. Joudy obtained her Ph.D. in Clinical Psychology, with emphasis in Health Psychology/Chronic Pain, from Pacific Graduate School of Psychology at Palo Alto University in 2008. She then completed intensive post-doctoral training at El Camino Hospital and CHAC to further advance her clinical skills.


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Dr. Denniz Hernandez joined Allied Pain & Spine Institute in 2022. She obtained her Doctorate in Psychology in Applied Clinical Psychology from The Chicago School of Professional Psychology in 2019. She received post-doctoral training at the Pasadena Rehabilitation Institute, where she gained experience in pain management; helping patients overcome chronic pain by minimizing psychological, emotional, and physical barriers that keep patients from achieving their maximum functionality and full potential.

Her goal is to ensure that patient’s emotional, mental, and physical needs are considered in treatment by providing a compassionate and trusting environment, along with coping techniques to help them overcome life challenges.


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Dr. Jennifer Huggins received her Doctorate degree in Clinical Psychology with an emphasis in Health Psychology from the California School of Professional Psychology at Alliant International University in 2009. She went on to complete a post-doctoral fellowship in Health Psychology at the California Pacific Medical Center.


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Born and raised in Puerto Rico, Dr. Orlando Soler is a proud member of the APSI community. He studied chiropractic at New York Chiropractic College in upstate New York, emphasizing education in evidence-based chiropractic. He is comfortable working will all patients, but he specializes in pain management with instrument-assisted myofascial release technique, disc herniation injury management, and performing diversified adjustments.

In his free time, he enjoys cooking, gardening, movies, and finding the best place to eat.


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Dr. Rupa Chakravarty holds a Doctorate degree in Physical Therapy and is a Board certified Orthopedic Specialist. She earned her Doctorate from Des Moines University, Iowa. She has been a Physical Therapist for three decades and has extensive experience and expertise in various settings and practices. This unique background gives her the added perspective to being able to treat complex and difficult diagnoses.

Rupa has numerous manual therapy and exercise certifications in her tool kit. She is also a Board certified Clinical Instructor and imparts Physical Therapy knowledge to aspiring rehabilitation practitioners.


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Junior Rangel is a California licensed Physical Therapist Assistant. He holds a BS in Kinesiology, pre-professional.

He has a wide range of experience working with multidisciplinary teams and emphasizes the root cause approach as a foundation for treating patients. Junior uses extensive manual therapy techniques and functional exercises to help patients operate at a more optimal level. He stresses movement science which works on the whole chain.

He is a certified functional strength coach. The CFSC program incorporates physical therapy as a foundation with evidence-based practice. The key to functional training is making changes in real-time and building on them with practice. His goal with treatment is to promote patient independence.
Born and raised in Santa Maria, California, he moved to the Bay Area in 2011. In his free time, Junior loves to listen to music, read books, meditate, and explore the outdoors.


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Celine Chang is a California State Board Licensed Acupuncturist, Master of Acupuncture and Oriental Medicine since 2006. She embraces traditional acupuncture with her own innovation and objective diagnosis method. Celine practices the technique of scalp acupuncture, which restores the strength of a person’s body, muscle, organs, and tissues efficiently and usually delivers immediate positive effects.


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Dr. Aileen Phu is a Doctor of Acupuncture and Oriental Medicine (DAOM), Master of Traditional Chinese Medicine (MSTCM), California State Board Licensed Acupuncturist (L.Ac), and Diplomate of Oriental Medicine (Dipl O.M). She joined Allied Pain and Spine in 2022.

Born and raised in Bay Area, her passion for Acupuncture/Chinese Medicine started when she sought treatments for her Asthma after obtaining her undergraduate degree from San Jose State University. During her master’s program, she was one of the top 5 students and received the highest score on the California Acupuncture Board licensing exam from her class. Even though treating Asthma has become a specialty for her, she has been effectively treating a wide range of ailments with a strong focus on pain management in her private practice since 2016 before joining Allied Pain and Spine. She utilizes and combines different treatment styles to cater each person’s individual needs.


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Jacqueline Guzman is a California State Board Licensed Acupuncturist, Diplomate of Oriental Medicine, and board-certified National Health & Wellness Coach. Pursuing her passion to provide care in an integrated and patient-centric setting, Jacqueline joined the team at Allied Pain & Spine Institute in 2021.

After obtaining her Bachelor of Science degree in Biology, with concentration in Physiology and Health Education from San Francisco State University, Jacqueline went on to complete her Master in Science degree in traditional Chinese Medicine in 2016 at the American College of Traditional Chinese Medicine at CIIS.


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Dr. Sherwin Hua brings nearly a decade of experience treating patients with complex spine and brain disorders. He has performed over 3,000 surgeries since finishing Residency at Johns Hopkins Hospital in 2005 and has taken care of thousands of patients with neurosurgical and pain issues. He brings this wealth of experience into every consultation at Allied Pain & Spine Institute and into every surgery at Trinity Surgery Center. Every patient and situation are different, and so Dr. Sherwin Hua practices the art of neurosurgery one patient at a time.


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Dr. Bryan McCleve is a board-certified Anesthesiologist who joined Allied Pain & Spine Institute in 2020. He works primarily through Allied‘s affiliated ambulatory surgery center, serving as co-director of Anesthesia Services at Trinity Surgery Center.

Dr. McCleve attended Stanford University for his undergraduate studies, and as a student-athlete, competed at the highest levels in springboard diving. He was awarded his Medical Doctorate at University of Utah School of Medicine before setting off for specialized training in anesthesia– with emphasis in acute pain management, regional anesthesia, and pediatric anesthesia– at the Medical College of Virginia.


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