Dr. Justin Marasigan, D.O. earned his medical degree from Kirksville College of Osteopathic Medicine in Missouri. Dr. Marasigan went on to complete his Internal Medicine Residency in the Detroit area and his Gastroenterology specialty training in Erie, Pennsylvania. He applied a variety of experiences from rural offices to large academic centers throughout Western Pennsylvania and Eastern Ohio.
Dr. Justin Marasigan, D.O. earned his medical degree from Kirksville College of Osteopathic Medicine in Missouri. Dr. Marasigan went on to complete his Internal Medicine Residency in the Detroit area and his Gastroenterology specialty training in Erie, Pennsylvania. He applied a variety of experiences from rural offices to large academic centers throughout Western Pennsylvania and Eastern Ohio.
The reviews listed below were collected independently of Unio Specialty Care through rater8. Each review represents an authentic and verified patient experience.
It was my mom’s first visit and Dr. Marasigan was very thorough and made appropriate recommendations. He didn’t push my elderly mother when she hesitated to follow through on the recommendations.
(2 weeks ago)
Mar-2026
He is a wonderful doctor who communicates clearly and consistently with his patients and is extremely effective in helping them feel better.
(2 weeks ago)
Mar-2026
professional great communicator thank you very much
(2 weeks ago)
Mar-2026
Spoke kinda fast.
(1 month ago)
Mar-2026
He explained throughly of what he was going to do,
(1 month ago)
Feb-2026
Very good service, Him and his staff, thank you
(1 month ago)
Feb-2026
Great Doctor 👍
(1 month ago)
Feb-2026
Dr Marasigan explains things well. I did have to wait over an hour but he was apologetic.
(1 month ago)
Feb-2026
Dr. Marasigan is very knowledgeable, thorough and professional. I was apprehensive that my original doctor was retiring, but I ended up being very happy with Dr. Marasigan taking a new look and approach to my case. I have hope for the first time in years that he can help me with my stomach issues.
(1 month ago)
Feb-2026
He explained the results of past scans and what tests I might need in the future based on.my age.
(1 month ago)
Feb-2026
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GI-Camarillo
4005 Mission Oaks Blvd. Unit A Camarillo, CA 93012
GI-Oxnard
2241 Wankel Way Suite A Oxnard, CA
Dr. Justin Marasigan, D.O. was raised in the Los Angeles area. He earned his undergraduate degree from the University of Southern California and his medical degree from Kirksville College of Osteopathic Medicine in Missouri. Dr. Marasigan went on to complete his Internal Medicine Residency in the Detroit area and his Gastroenterology specialty training in Erie, Pennsylvania. He applied a variety of experiences from rural offices to large academic centers throughout Western Pennsylvania and Eastern Ohio. Prior to joining the team in Ventura County, Dr. Marasigan practiced Gastroenterology for 7 years in Washington State.
When he is not at work, Dr. Marasigan enjoys spending time with his wife, twin son and daughter, and dog Sadie
It was my mom’s first visit and Dr. Marasigan was very thorough and made appropriate recommendations. He didn’t push my elderly mother when she hesitated to follow through on the recommendations.
He is a wonderful doctor who communicates clearly and consistently with his patients and is extremely effective in helping them feel better.
professional great communicator thank you very much
Spoke kinda fast.
He explained throughly of what he was going to do,
Very good service, Him and his staff, thank you
Great Doctor 👍
Dr Marasigan explains things well. I did have to wait over an hour but he was apologetic.
Dr. Marasigan is very knowledgeable, thorough and professional. I was apprehensive that my original doctor was retiring, but I ended up being very happy with Dr. Marasigan taking a new look and approach to my case. I have hope for the first time in years that he can help me with my stomach issues.
He explained the results of past scans and what tests I might need in the future based on.my age.