WorkCare Physician Team

automated on-call physician contact system. He joined WorkCare as an Associate Medical Director in 2008. Based in North Carolina, he is board-certified in Occupational Medicine. Dr. Longphre earned his Medical Degree and Master’s Degree in Public Health at the University of North Carolina Chapel Hill. He completed a fellowship in Undersea and Hyperbaric Medicine and his residency in Occupational Medicine at Duke University Medical Center. He is fluent in Japanese and a multi-engine, instrument-rated private pilot.

During her tenure with WorkCare she has provided clinical oversight and leadership for clinical accommodation, leave and absence management solutions, medical surveillance exams, injury triage and telemedicine, and Medical Review Officer (MRO) services. In addition, she has served as the Medical Director at several client companies. She is the former Medical Director (Occupational Health Services Officer) for the City of Long Beach. While with the city, she gained experience collaborating with bargaining units, doing disability evaluations, and developing police officer and firefighter medical standards. Her experience also includes Medical Director for a private industrial clinic, medical-legal evaluations, drug and alcohol testing programs, and writing OSHA-mandated policies and procedures. Dr. Grace is board-certified in occupational and environmental medicine. Dr. Grace has a strong background in the management of orthopedic injuries and she is a qualified member of the Federal Motor Carrier Safety Administration’s Medical Examiner Registry. She earned her Bachelor’s Degree in Kinesiology from the University of California, Los Angeles. She received her Medical Doctorate from the University of Southern California and completed post-graduate training in a combined program through UCLA and USC.

Dr. Jacobs has more than 27 years of experience in a variety of practice settings. His responsibilities include review of medical exam findings in the context of health status and hazard exposure risks. Before joining WorkCare in 2016, he was the corporate physician for a pharmaceutical manufacturer and medical director of Employee Health Services at a hospital in Philadelphia, Penn., where he is based. Dr. Jacobs is board-certified in occupational medicine. He earned his Medical Doctorate at Boston University and his Master’s Degree in Public Health at the University of California, Berkeley. He is a certified as a Medical Review Officer and commercial driver Medical Examiner.

employers and their employees. Dr. Kohanna previously served as Vice President of Occupational Health and Chief Medical Officer at AllOne Health Resources. His experience includes consulting to companies in diverse industries, including petrochemicals, pulp and paper, hazardous waste, biotechnology, pharmaceuticals, insurance and transportation. Dr. Kohanna is board certified in both Occupational and Environmental Medicine and Emergency Medicine. A fellow in the American College of Occupational and Environmental Medicine, he received his Medical Degree from George Washington University’s School of Medicine and Health Sciences and his Master’s in Business Administration from Northeastern University. His clinical expertise includes environmental exposures, medical surveillance programs, fitness-for-duty and return-to-work evaluations, drug testing, wellness and health promotion, travel medicine and pre-placement health screenings.

An occupational medicine and family physician, he formally served as Medical Director and Assistant Clinical Professor for Occupational Health at Stanford University and the SLAC DOE accelerator laboratory in Palo Alto, Calif. He has provided occupational health care and clinical oversight in manufacturing, pharmaceutical research and development, and hospital-based settings. Dr. O’Callahan has extensive experience developing and running complex medical surveillance programs in research settings involving work with research animals, biological and chemical agents and emerging technologies. He has also worked extensively in emergency medicine, and is a certified Medical Review Officer. Dr. O’Callahan received his Medical Degree from Columbia University College of Physicians & Surgeons and his Master’s in Public Health degree with an occupational and environmental medicine emphasis from the Johns Hopkins Bloomberg School of Public Health.

return-to-work, vaccine exemption, telehealth, WorkMatters and medical surveillance teams. As an occupational medicine, internal medicine and lifestyle medicine physician, Dr. Dornstein serves as the Medical Director for Boeing Corporation, where she performs fitness-for-duty, return-to-work, travel medicine and commercial driver license exams. She is certified as a Commercial Driver Medical Examiner. Dr. Dornstein received her D.O. degree at the Philadelphia College of Osteopathic Medicine (PCOM) and completed an internal medicine residency at Christiana Care Medical Center in Delaware. She is board-certified in lifestyle medicine and a Registered Dietitian.

employees’ need for leave and work restrictions and verbal authentication of medical documentation. Earlier in her career, she was a Lieutenant Commander in the U.S. Navy Medical Corps and served 12 years providing clinical, occupational and operational medicine to active-duty service members and their families in the U.S. Navy and Marine Corps. After leaving the military, Dr. Hoang Mancuso pursued occupational and environmental medicine at the University of California, Irvine, and earned her board certification. She has provided clinical services at the California Department of Industrial Relations, Kaiser Permanente and San Onofre Nuclear Generating Station, and performed utilization review for Total Healthcare Management and Paladin Managed Care Services. Dr. Hoang Mancuso earned her Doctor of Medicine degree at the Uniformed Services University of the Health Sciences, F. Edward Hebert School of Medicine, Bethesda, MD. She has a Master’s Degree in Environmental Toxicology from the University of California, Irvine. She is a National Registry Certified Medical Examiner and is certified in Family and Medical Leave Administration. Dr. Hoang Mancuso is fluent in Vietnamese and she enjoys traveling and spending time with her husband and daughter.

and disability services to client companies. Her expertise includes workers’ compensation injury management, employee health, work-related medical exams, medical surveillance and disability consultation. She is a certified Federal Motor Carrier Safety Administration Medical Examiner. Dr. Pereira earned her Medical Doctorate and Master of Science in Anatomy degrees at Des Moines University, Iowa. She completed an occupational medicine residency at HealthPartners, St. Paul, MN, and received her Master of Public Health degree from the University of Minnesota. She also completed three years of anesthesiology training at the University of Iowa. Dr. Pereira joined WorkCare in 2020 as an Associate Medical Director providing medical consulting, injury care, fitness-for-duty assessments and disability services to client companies. Her expertise includes workers’ compensation injury management, employee health, work-related medical exams, medical surveillance and disability consultation. She is a certified Federal Motor Carrier Safety Administration Medical Examiner.