Board of Directors

Chairman of the Board

Newport Brain Research Laboratory
Newport Beach, CA

Dr. Won is President and CEO of Newport Brain Research Laboratory. He is Board Certified in Occupational and Environmental Medicine, and completed his residency at the Harvard Occupational and Environmental Medicine residency program. He received his MPH from the Harvard School of Public Health and MBA from the University of Southern California, Marshall School of Business. He previously served as a US Navy Flight Surgeon, and as Chief Regional Physician and Chief Technology Officer (Health Services) for the Boeing Company. Dr. Won has served as WOEMA Education Committee Chair, has been a member of WOHC Planning Committees and currently serves as a WOEMA Director.

Scott Krasner, MD, MPH, FACOEM

Krasner Medical Consultants
Tucson, AZ

Dr. Krasner currently runs Krasner Medical Consultants, performing IMEs, impairment evaluations, disability exams, and occupational medicine consultations, continues clinical work in occupational medicine, as well as volunteering as the team physician for one of the local high schools.  His interests include skiing, traveling and plumbing. He has maintained his teaching position at the University of Arizona College of Medicine, and has been a Breath Alcohol Technician Instructor and Certified Medical Review Officer since the drug testing programs were established.

Rupali Das, MD, MPH, FACOEM

The Zenith Insurance Company
Pleasanton, CA

Dr. Rupali Das is Senior Vice President and Medical Director at Zenith Insurance Company and previously served as the Executive Medical Director of the California Division of Workers’ Compensation. She has held various leadership positions in Occupational and Environmental Health at the California Department of Public Health and California EPA. Prior to joining public service, she was in clinical practice in Occupational Medicine at the Palo Alto Medical Clinic. She is Clinical Professor of Medicine at the UCSF Division of Occupational and Environmental Medicine and a Fellow of the American College of Occupational and Environmental Medicine. Dr. Das has served as WOEMA Education Committee Chair, Legislative Committee Co-Chair, and WOHC 2012 Chair. She received her MD degree from the University of Illinois, Chicago, and her Master’s degree in Public Health from the University of California, Berkeley. She is board certified in Internal Medicine and Preventive Medicine/Occupational Medicine. Her professional interests include illness and injury prevention and health promotion to optimize productivity and wellness at work and in life.

Ramon Terrazas MD, MPH, QME, FACOEM
First Vice President

Office of the Department Physician
San Francisco Fire Department
San Francisco, CA

Dr. Terrazas currently serves as the Department Physician for the San Francisco Fire Department. He is board certified in Occupational and Environmental Medicine and obtained a Master of Public Health degree from the Medical College of Wisconsin. He completed his residency at the University of Pennsylvania.

Akbar Sharip, MD, MPH, FACOEM
Second Vice President

Resident/Young Physician & Scholarship Program Committee Chair
Loma Linda University of Occupational and Environmental Medicine
Loma Linda, CA

Dr. Sharip is an Associate Professor of the LLU School of Medicine and Director of the LLU OM residency program. He is the current Medical Director for Loma Linda University Occupational Medicine Center. Dr. Sharip is board certified in both Occupational and Environmental Medicine and General Preventive Medicine and Public Health.

Anthony Biascan, Secretary, MD, MSC, FACOEM

University of San Diego
San Diego, CA

Dr. Biascan is an associate physician diplomat at UC San Diego. He recently retired from the U.S. Navy after twenty years of distinguished service as a general medical officer, aviation medicine specialist, and board-certified occupational medicine physician. Dr. Biascan completed his residency training in Occupational and Environmental Medicine, as well as a Master of Science in Environmental Toxicology, from UC Irvine.

Heidi K. Roeber, MD, MPH

Honeywell Aerospace
Phoenix, AZ

Dr. Roeber is the Medical Director for Honeywell Aerospace Americas.  She is Board Certified in both Preventive and Occupational Medicine, completing her residency and MPH at University of Minnesota/HealthPartners and her fellowship in Preventive Medicine/Public Health at Mayo Clinic. Her interests include global health, education and employee well-being.


Amanpreet Dhillon, MD, MS, FACOEM

Kaiser Permanente
Ripon, CA

Dr. Dhillon completed his training in Occupational and Environmental Medicine at The University of Texas Health Sciences Center at Tyler, Texas and his Masters in Environmental Sciences from Stephen F. Austin State University in Texas. Prior to that he completed Family Medicine training at Carilion Health System in Roanoke, Virginia. He is board certified in Family Medicine and Occupational and Environmental Medicine. He joined The Permanente Medical Group in 2010 and practices clinical occupational medicine full time. Before that, Dr. Dhillon served on the faculty as an Assistant Professor in Occupational Medicine Residency Program at The University of Texas Health Science Center at Tyler. He is still involved in precepting Family Medicine residents from local residency programs in Occupational Medicine and is active in local medical societies.

Steven Feinberg, MD, MPH

Feinberg Medical Group
Palo Alto, CA

Dr. Steven Feinberg is a physiatrist and pain medicine specialist practicing in Palo Alto. He is an Adjunct Clinical Professor and teaches at the Stanford University Pain Service. Dr. Feinberg is a past president (1996) of the American Academy of Pain Medicine (AAPM). He served as a California Society of Medicine & Surgery (CSIMS) Year 2001 President. He serves as the lead author for the American Chronic Pain Association 2017 ACPA Resource Guide to Chronic Pain Treatment. Dr. Feinberg served as Associate Editor on the ACOEM Chronic Pain Guidelines Panel Chapter 2008 Update and as the Panel Chair for the 2017 update. He served as a Medical Reviewer for the ACOEM 2014 Opioid Guidelines. He served as a Reviewer for the AMA Guides to the Evaluation of Permanent Impairment, 6th Edition. He is on the AMA Guides Newsletter Advisory Board. Dr. Feinberg is an Expert Reviewer for the Medical Board of California. He is the ACOEM representative to the AMA Pain Care Task Force.

Matthew Hughes, MD, MPH

Rocky Mountain Center for Occupational & Environmental Health
Salt Lake City, UT

Dr. Matthew Hughes is Associate Professor and Deputy Director of the Rocky Mountain Center for Occupational and Environmental Health at the University of Utah. He has performed many professional roles in Occupational Medicine, with service in clinical, corporate, governmental, and academic positions. He has served over 20 years in corporate medical officer positions, executive management, and consulting roles providing support and strategic direction to major international corporations. Currently, his primary research interests include evidence-based analysis and development of management practices for the advancement of occupational health and safety of workers, toxicology, opioids and musculoskeletal medicine.  He serves as Assistant Editor in Chief and as a researcher and author of the ACOEM Evidence Based Practice Guidelines. He enjoys teaching occupational medicine residents, industrial hygiene students, and collaborating with other faculty and colleagues. He is course director for Administrative Management of Occupational Health and Safety Programs.

Alya Khan, MD, MS

UC Irvine
Irvine, CA

Dr. Alya Khan is the Occupational Medicine Residency Director and Assistant Clinical Professor at the University of California, Irvine School of Medicine. She completed her residency in Internal Medicine from Hackensack UMC Mountainside and Occupational Medicine from University of California, Irvine and holds dual board certifications from the American Board of Internal Medicine and the American Board of Preventive Medicine. She also received a Master's degree in Environmental Toxicology from the University of California, Irvine. Dr. Khan's clinical work is at the Center for Occupational and Environmental Health that provides clinical and preventive services to local and regional employers, conducts worksite surveillance programs, as well as provides toxicology consultations.  She is the chair of the UCI-COEH annual symposium and a member of M-POWER committee (Medical Professionalism and Optimal Wellness Education and Resource) at UC Irvine. Dr. Khan was a prior co-chair for the education committee and is currently the lead for the podcast subcommittee and a member of the DEI committee at WOEMA. Her passion includes providing up to date, valuable educational offerings for the OEM community. 

Minh Nguyen, DO, MPH, MHA, FACOEM

Dr. Nguyen is a board certified occupational medicine physician who joined US HealthWorks in October 2007 and transitioned to Concentra in February 2018 with the acquisition and merger of US HealthWorks.  He currently serves as the Vice-President of Medical Operations for the Pacific Region overseeing all medical clinics in California and Hawaii.  Dr. Nguyen completed his undergraduate degree at the University of California Riverside, and then earned his medical degree from the Kirksville College of Osteopathic Medicine.  He completed his internship in general surgery in the Navy and his occupational medicine residency at the University of Pennsylvania.  He also has a Master of Public Health (MPH), Master of Healthcare Administration (MHA), and a Master of Geriatrics Health (MGH) from A.T. Still University and a Master of Business Administration (MBA) from the USC Marshall School of Business.  Dr. Nguyen is a Fellow of the American College of Occupational and Environmental Medicine (FACOEM) and an adjunct clinical faculty at Touro University College of Osteopathic Medicine in Vallejo, CA.  He is also the Past President of the Osteopathic Physician and Surgeons of California (OPSC 2019-2020), and he serves on the California Coalition on Workers’ Compensation (CCWC) Board of Director and the California Medical Association (CMA) Workers’ Compensation Subcommittee.