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S. Sean Younai, MD, FACS, QME

As the co-medical director of the occupational clinics, Dr. Younai has had over two decades of experience in the evaluation, treatment, and case management of complex work-related injuries. As a Qualified Medical Examiner and expert Hand Surgeon he works closely with employers and their risk team in order to reduce their liability and exposure while caring for the injured worker in the most optimal way with the aim of having them regain function and productivity.

Dr. Younai is a graduate of UCLA Medical School and has trained in General Surgery at UC San Francisco-East Bay, Hand Surgery at the University of Pittsburgh, and Plastic & Reconstructive Surgery at Lahey Clinic & Brigham and Women’s Hospital.

Dr. Richard Heiss MD

Dr. Richard Heiss MD is a Family Medicine Physician in Bakersfield. He completed his pre-medical studies at Andrews University in Berrien Springs, Michigan in 1979, received his Doctorate in Medicine at Loma Linda University in 1983, and completed his residency in Family Medicine at Hinsdale Hospital in Hinsdale, Illinois in 1986. With over 40 years of experience in the medical field as well as many years of volunteer service under his belt, it's easy to see his commitment and dedication to his patients. Whether it's treating patients, educating students and parents on various subjects, or volunteering at numerous charitable projects, Dr. Heiss gives it his all every single time.

Ronald Losa

Ronald Losa is our Director of Business Development here at Central Valley Occupational Medical Group, Inc. He has over 10 years' experience marketing in the occupational medicine industry and received his Workers' Compensation Certification through the work comp program at California State University Bakersfield. He has great relationships with many employers, building excellent rapport and trust throughout the years working with them. Ron is active at his church, in our community (annually volunteering his time with the National MS Society) and has served as a Board of Director for various organizations, including Kern Economic Development Corporation.

Maryhelen Osenbaugh

Case Management is not for the faint of heart. Maryhelen Osenbaugh has had over 25 years' experience in Workers comp and Case Management. In addition to a 12 year career in Human resources, training and management. Maryhelen has been a part of the CVO family for over a decade. She has been providing intervention on behalf of the patient, medical provider, insurer and employer. Thus, placing herself at the center of the confusion and asking the tough questions. The role of a case manager is an amazing combination of perception, planning, listening, empathy and caring... we are very fortunate to have such a person on our team!

Dr. Richard Sall

Dr. Richard Sall brings a level of good old charm and a ton of experience. His career spans over 36 years in Occupational Medicine and he has been a part of the CVO family for close to two decades. His primary duties include the treatment of occupational injuries/illnesses, pre-employment physicals, substance abuse screening, disability evaluations, and P&S Evaluations. Dr. Sall received his Doctor of Medicine degree from Wayne State University Medical School in Detroit, Michigan. He conducted his residency training in General Surgery at St. John Hospital and received his residency training in General Surgery at St. Johns Hospital. Dr. Sal received his Board Certification in Occupational Medicine at the Medical College of Wisconsin and is a veteran of the US Army.

Brenda Steinberg, DO

Brenda Steinberg, DO is a board-certified Emergency Medicine Physician. Her primary duties include the treatment of occupational injuries/illnesses and pre-employment physicals, including DOT initial and recertification physicals. Dr. Steinberg has become one of our preferred medical providers with some of the top employers who have partnered with Central Valley Occupational Medical Group. She obtained her medical degree from the Western University of Health Sciences and completed her internship and emergency medicine residency at Kern Medical in Bakersfield, CA. Dr. Steinberg is a National Registry Certified Medical Examiner (NCRME).

Catherine Hawthorne, MD

Catherine Hawthorne, MD is a board-certified Orthopedic Surgeon and current President of the Orthopedic Rehabilitation Association. Her primary duties include the treatment of occupational injuries/illnesses, as well as minor surgery at Central Valley Occupational Medical Group. She has been practicing medicine for many years and occupational medicine since 2018. Dr. Hawthorne obtained her medical degree at the University of Vermont College of Medicine and did her internship and residency at Buffalo General Hospital. Dr. Hawthorne completed her orthopedic surgical residency at Eerie County Medical Center.

Don Jeske, FNP-C.

Don Jeske, FNP-C assists our doctors with the evaluation and treatment of injured workers. He also performs physicals, periodic health & screening exams, as well as DOT initial and recertification exams. Mr. Jeske received his Master of Science in Nursing from Azusa Pacific University. Mr. Jeske is our longest tenured provider in Delano and has quickly established himself as the premier occupational medical provider in the City of Delano, having built a great reputation with many employers. In fact, many companies and his patients recognize him at the local restaurants, stores, and gas station. Mr. Jeske is a National Registry Certified Medical Examiner (NCRME).

Kelly Cook, PA-C

Kelly Cook, PA-C assists our doctors with the evaluation and treatment of injured workers. She also performs pre-employment physicals, periodic health & screening exams, as well as DOT initial and recertification physical exams. Ms. Cook received her Master of Clinical Health Services and Physician Assistant Certification at the University of Washington. Although she is new to CVO and the world of occupational medicine, under the guidance of our seasoned medical providers and her desire to learn, she quickly caught on and gained the respect of all our providers and companies we work with. Ms. Cook is a National Registry Certified Medical Examiner (NCRME).

Reynaldo Locquiao III

Reynaldo Locquiao III, is a graduate of Physical Therapy from the University of Baguio in the Philippines and has been an active Physical Therapist since 2006. Mr. Locquiao is experienced in outpatient, skilled nursing, and acute settings. He believes in effective practical approaches to rehabilitation and has developed fitness and wellness programs aimed at preventing injuries and encouraging a more active lifestyle.