Board of Directors

The COIPA Board of Directors are elected by the membership and comprised of:

  • At least one-third of the Directors will be Members who are primary care providers and are either family practitioners, pediatricians, internists or associate providers in those specialties.
  • At least one-third of the Directors will be Members who are not included in the previous clause.
  • At least two of the Directors will be Members from the Columbia Gorge practice area and at least one of those Directors will be a primary care provider.
  • At least one of the Directors will be a Member from a practice area outside Deschutes County and the Columbia Gorge.

Sid Henderson, MD – PresidentSid Henderson, MD

Sid Henderson, MD has been at Bend Memorial Clinic since 1991. Certified by the American Board of Internal Medicine, Dr. Henderson graduated from the University of California Medical School in 1977 and completed his residency at the University of Oregon Health Sciences in 1981. He received his training in Gastroenterology and Hepatology from the University of Pittsburgh, which remains the world’s largest center for liver transplantation. Dr. Henderson was the first physician to perform diagnostic and therapeutic biliary endoscopy, also known as ERCP (Endoscopic Retrograde Cholangiopancreatograpy) in Central Oregon.

ShSharon DeHart, PA-Caron DeHart, PA-C – Vice President

Sharon D. DeHart, PA-C is a Physician Assistant practicing primary and immediate care medicine at Deschutes Rim Health Clinic in rural Wasco County.  She became a Physician Assistant after spending over twenty years working pre-hospital emergency medicine.  Sharon completed OHSU’s Physician Assistant program and was recruited by OHSU’s Office of Rural Health to become the first full-time medical provider in a yet-to-be-built clinic.  In addition to being a full-time provider, she is also a full-time manager of the South Wasco County Health District.  Sharon loves her job as a Primary Care Provider and strives to provide the best possible comprehensive care for her patients.

When she can break away from her work, Sharon and her husband take their RV on excursions to experience Oregon’s beauty.

 Gary Plant, MD – Secretary / Treasurer  Gary Plant MD Photo - Cropped

Gary Plant, MD, is a Family Care physician at Madras Medical Group.  He followed the Rural Primary Care Track in his education that focused on issues of primary care in rural areas. He enjoys OB including C-sections, women’s health, sports medicine, and caring for adults and children of all ages.  Dr. Plant participates in community events with his family, and sometimes solo, throughout the year. He appreciates the benefits that come with that involvement, noting that every year brings more and more connections to neighbors and friends throughout the county.

Dr. Plant spends most of his free time “trying to keep up with three very active young children and an equally active wife!” He also likes to spend time outdoors, whether it’s hiking, fly fishing or camping. He finds satisfaction in working with his hands through gardening and woodworking. He’s also a big fan of bluegrass music.


Megan Barton, NP

Megan J. Barton is a Family Nurse Practitioner specializing in family and acute care and has worked at Columbia Gorge Family Medicine in Hood River since 2010. Megan is originally from Albuquerque, New Mexico, but graduated from the University of Arkansas for Medical Sciences Program in Little Rock, Arkansas with her Masters in Nursing Science. Megan’s previous work experience includes serving as a Community Health Family Planning Nurse Practitioner in Washington State and as a Same Day Surgery and Recovery Room Nurse for over ten years. One of her favorite aspects of working in a small town is the opportunity to see patients both in the clinic setting and out in the community. She believes strongly in the idea that healthy people make healthy communities and likewise.

Megan and her husband and three children reside in Hood River where she enjoys skiing and mountain biking.


Michael Caravelli MD Photo 1

Michael Caravelli, MD

Michael Caravelli, MD, is a board certified orthopedic surgeon and medical director at The Center in Bend.  Dr. Caravelli’s former collegiate and professional baseball playing led to his career choice of orthopedics.  He attended Northwestern University Feinberg School of Medicine with a Residency at the same place in the Department of Orthopedic Surgery.  A Fellowship in Joint Reconstruction at the University of California at San Francisco led to Board certification and the opportunity to join The Center’s team. Dr. Caravelli strives to maintain open, insightful communication with his patients and ensure they have all the information they need to be active participants in their healing and recovery to provide quality of life.

Dr. Caravelli and his family were attracted to Bend by the high quality of life and the endless outdoor opportunities.  In addition, the choice of Central Oregon was also influenced by the top-notch medical system.


Mark Gonsky, DO

Mark Gonsky, DO is board certified in family medicine and osteopathic manipulative treatment, and is the founder of Deschutes Family Care. As a third generation osteopathic family physician with childhood memories of house calls and the healing relationships built between patient and provider Dr. Gonsky is committed to carrying on the tradition of caring. He attended osteopathic medical school at the Philadelphia College of Osteopathic Medicine and completed his family medicine residency training at Central Washington Family Medicine in Yakima, WA. Prior to starting Deschutes Family Care, he was a founding physician at St. Charles Family Care-Bend and in the interim filled a community need with Mosaic Medical’s Complex Care Clinic/Bridges Health program. When not at the clinic Mark is outside as much as possible with his wife and two sons exploring, tending backyard honey bees, or just enjoying Central Oregon.


Megan Haase, FNP

Megan, who is a family nurse practitioner, graduated from Santa Clara University with BS in Biology. She then received her BSN and MSN from OHSU. Megan has been with Mosaic Medical since its inception in 2002 and served in the role of provider and medical director before being named CEO in 2010. In addition to her responsibilities at Mosaic Medical, Megan is very involved in a variety of efforts that impact the healthcare of Central Oregonians. She is a member of the Pacific Source Quality Assurance Committee and a Board Member of the Central Oregon Independent Practice Association. She is also a member of the Central Oregon Health Council and sits on the Board of Directors for St. Charles Health System and the Board of Directors for the Oregon Primary Care Association. Megan believes wholeheartedly in the heart and mission of Mosaic Medical.


Linda Hatch FNP Photo

Linda Hatch, FNP

Linda Hatch is a Family Nurse Practitioner who has been with Mosaic Medical since its inception in 2002. She completed her Masters and Family Nurse Practitioner training at Oregon Health Sciences University in 1993. She has been in Prineville providing quality health care since 1993 and plans on remaining here as she is committed to her patients and community.

Ngocthuy Hughes, DO

Ngocthuy Hughes, DO

Ngocthuy Hughes, DO, is a fellowship trained Bariatric surgeon and maintains an active medical practice at St. Charles Surgical Specialists in Redmond. Dr. Hughes received her medical education from AT Still Health Sciences University College of Osteopathic Medicine and Good Samaritan Hospital and Medical Center, completed her Bariatric/Advanced Laparoscopic fellowship at Legacy Good Samaritan Hospital and completed an internship and residency at Sun Coast Hospital.

Dr. Hughes enjoys spending with her husband and son in the many activities Central Oregon has to offer.


Ray Lansing MD Photo

 Raymond Lansing, MD

Raymond Lansing, MD, graduated from the University of Wyoming with a degree in Biochemistry before receiving his medical degree from Creighton University, Omaha, NE medical School. He finished his anesthesiology residency at the University of Texas San Antonio Health Science Center before joining Bend Anesthesiology Group in 2005. A board-certified physician, he is a member of the American Society of Anesthesiology (ASA), the Oregon Society of Anesthesiology (OSA) and serves as a liaison for the ICU committee, and Redmond Surgery Center.

Dr. Lansing took a medical trip to Guatemala in 2011, enjoys fly fishing, camping and traveling.


John Peoples, MDJohn Peoples MD Photo

John Peoples, MD, is a pediatrician at Central Oregon Pediatric Associates.  Listening to families’ needs and partnering with them to develop a plan of care for each child’s unique health needs is at the core of Dr. Peoples’ approach. Dr. Peoples recently finished Pediatric Chief Residency/Residency at Lucile Packard Children’s Hospital at Stanford. He ardently advocates for health care access for all children, and over the last 15 years, has led health and developmental outreach programs for migrant farm children and foster children.

Dr. Peoples lives in Bend with his wife and dog, where he can pursue his love of the outdoors through running, hiking, backpacking and adventures on the river. He loves music, in particular jazz and blues, and plays the saxophone in his free time.


Trey Rigert MD

 Trey Rigert, MD

Dr Trey Rigert is Board certified in Physical Medicine and Rehabilitation and Addiction Medicine. He graduated from OHSU in 1989 and completed his residency in PMR at the University of Irvine in 1993. His experience includes the medical directorship of two inpatient physical rehabilitation programs as well as an in and outpatient multidisciplinary chronic pain program, he is proficient in interventional pain care, and is the founder of Columbia Pain Management in Hood River Oregon.  He is the current Quality Medical Director for Providence Hood River Medical Center, Vice President of medical staff and currently serves as a voting member of the Oregon Region Providence Board. 

Dr Rigert enjoys spending time with his wife and four children, his beagle Lucy, kiting, MT biking and skiing.  Trey is passionate about helping those with disabilities, chronic pain and addiction and believes strongly that a vibrant diverse medical community that includes private practice is the best long term solution to meeting the myriad needs of these populations.       


Paula Shultz, MD

Dr. Paula Shultz is a board certified radiologist at Central Oregon Radiology. She attended medical school at the University of New Mexico and her residency at the University of Utah. She specializes in diagnostic and pediatric radiology.




Dale Svendsen MD Photo

Dale Svendsen, MD

Dale Svendsen, MD, is a pediatrician at Central Oregon Pediatric Associates and committed to helping Central Oregon’s families raise children that are healthy, happy, assured individuals. He is a key figure in coordinating Pediatric Oncology care in Central Oregon, working closely with Doernbecher’s Children’s Hospital and St. Charles Cancer Care Center to take care of our community’s children with cancer. Dr. Svendsen understands that clear communication is vital, and strives to explain diagnoses and treatment plans in a meticulous, step-by-step process. Prior to becoming a part of the Central Oregon Pediatric Associates team in 1990, he practiced in the Alaskan wilderness.

When not caring for kids, Dr. Svendsen can be found fly-fishing in our many rivers or in his kitchen cooking. Among his favorites is preparing international cuisine and he is always interested in new recipes.


Michael Widmer, MD

Michael C. Widmer, MD, FACC, practices at High Lakes Health  Care. He received his MD degree from the Oregon Health Sciences University in 1990 and completed his internship and residency in Internal Medicine and Fellowship in Cardiology at Dartmouth. Dr. Widmer, an Oregon native, has practiced in Bend since 2001. He specializes in and has board certifications in Cardiovascular Disease, Nuclear Cardiology, and Echocardiography. He is a Fellow in the American College of Cardiology and served as Governor of the Oregon Chapter of the ACC from 2006-2009.He served on the Board of Governors Executive committee 2008-2009 and on the National Clinical Quality Committee in 2009. He remains active in the various Advocacy, Educational and Quality Initiatives of the ACC. Dr. Widmer is responsible for the development and implementation of St. Charles’ Heart One acute heart attack (STEMI) program and served as director from 2003 to 2013.  Dr. Widmer, with his wife and three sons, enjoy all outdoor activities that Central Oregon has to offer, especially fly fishing. An accomplished master athlete, Dr. Widmer is a regular in the local race scene.