Meet Our Team

Dr. James Petros is the founder and medical director of Allied Pain & Spine Institute, sub-specializing in interventional pain management and musculoskeletal care.

With his diverse professional and personal backgrounds, Dr. Petros has transcended the sciences of pain and musculoskeletal medicine and captured the art of their practice. His integrated approach and balanced understanding of injury and illness are testaments to his versatility in providing the ultimate in patient care.

Dr. Petros’ pursuit of comprehensive pain care has yielded multiple board certifications…


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Dr. Harman Cherra is a chiropractor specializing in providing holistic pain management. He is an advocate of multi-disciplinary medicine, wellness, and disease prevention.  Always empowering patients through education, Dr. Cherra has earned his reputation, not just as a healer, but also a gifted teacher.

A native of San Jose, California, Dr. Cherra obtained his Bachelor of Science in Pharmacology from the University of California, Santa Barbara. Through the influence of personal battles with low back pain and life-changing chiropractic treatment, Dr. Cherra was inspired at a young age to learn more about alternative treatment and healthcare delivery systems.  This…


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Dr. Parish Vaidya joined Allied Pain & Spine Institute in 2015, bringing with him years of experience in interventional pain management and integrative medicine. His comprehensive approach, diverse skill set, and outstanding dedication to compassionate care set the new standard in modern-day pain care.

Dr. Vaidya has the rare designation of being board-certified in three different fields: Physical Medicine and Rehabilitation, Pain Medicine, and Integrative Medicine…


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Medical Training

  • Pain Medicine Fellow
    Dartmouth-Hitchcock Medical Center
    07/2017 – Present
  • Physical Medicine & Rehabilitation Resident
    Stanford University Medical Center
    06/2014 – 06/2017
  • Preliminary Internal Medicine Intern
    Steward Carney Hospital
    06/2013 – 06/2014

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Nastaran “Nas” Alvand is the clinic coordinator and manager at Allied Pain & Spine Institute (APSI). Coming from an accomplished medical/business background with roots in Paris, France, Nas joined APSI soon after its inception and has since served as an influential leader within the organization…


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