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Jonathan C. Olegario

Jonathan C. Olegario, MD

Internal Medicine
4.9 / 5 (Based on 107 Ratings) Learn More

Office Information

About Me



University of the East, Ramon Magsaysay Medical Center, Quezon City, Philippines, Medical School


Wright State University, Dayton, OH, Internal Medicine


American Board of Internal Medicine


September 30, 2019
Everyone was awesome!
September 13, 2019
Dr. Olegario is the best, patient dr I have ever had
September 10, 2019
Dr.john and his nurses are a very caring group
September 07, 2019
Great Experience
September 03, 2019
Dr olegario is easy to talk to and has a genuine concern about my health. He offers suggestions on how to stay healthy and gives me the time I need to discuss my health.
August 23, 2019
Very impressive communication and sincere concern for positive health goals
August 01, 2019
Dr Olegario gives me excellent care. He is informed about my health history. He takes the time to explain about my health issues. He takes the time to listen and answer my questions. He is caring,kind and knowledgeable. I drive from Sioux Falls to my appointments. I chose to keep Dr Olegario as my primary doctor. His nurses are very kind and helpful. I am very happy with the care I receive from my doctor and clinic.
July 31, 2019
The nurse was exceptional and the Dr is very good at explaining things in terms that the public can understand.
July 27, 2019
always a great experience
July 20, 2019
Dr. Olegario took the time to review my chart prior to my appointment with him which helped him determine what testing should be done. Even though I am a medical professional myself, he and his nurse explained everything to me as they would to one with no medical background. They were both thorough and made me feel comfortable and well informed. Thank you to both for your excellent patient care! Avera is lucky to have you both!
July 18, 2019
Great staff! Great care!
July 18, 2019
I would not go to any other doctor but Dr. Olegario!
July 11, 2019
At my last appointment I felt cheated cause I had blood work in the morning and an appointment in the afternoon. At the afternoon appointment they did not have the results of the blood test taken that morning. It was a simple blood test and nothing extensive that would have required more time to analyze.
June 29, 2019
I am so thankful Dr. Olegario and his compassionate nature and his vast knowledge.
June 27, 2019
Dr. Olegario is really nice
June 26, 2019
This is fine group of professonal people and they do a good job.
June 23, 2019
I feel well cared for
June 21, 2019
Dr O is the best
June 18, 2019
I didn't see anyone clean their hands.
June 05, 2019
Dr. Olegario is a great Doctor
June 03, 2019
Dr. Olegario is always on top of information, compassionate, humble and engaged.
May 24, 2019
Dr. Olegario is the best and we feel very privileged to have him as our doctor.
May 01, 2019
It has been a good experience.
April 18, 2019
Dr. is always compassionete . Takes time to explain everything. The whole group is great.
April 18, 2019
Never been dissatisfied with the services. Everyone very pleasant and Dr. Olegario always explains everything in a very understanding way and is very patient and caring.
April 16, 2019
Dr Olegario is a very special physician!
April 14, 2019
April 12, 2019
Everyone here is great. They are the perfect blend of personal and professionalism. They treat us with the utmost respect and are always so kind. We fell very blessed to have Dr. Olegario and his staff for all our our healthcare needs! Thank you to you all for being such wonderful people!
April 04, 2019
Always enjoyable like visiting an old friend
April 03, 2019
Dr. Olegario is a very good doctor and a good person. The staff at the clinic went the extra mile to fit me in, and they always are encouraging regarding my well being. Also, your pharmacy staff is equally commendable. I am very happy with my care.
March 27, 2019
I really appreciate that they fit me into their busy schedule at the last minute. Everyone was so friendly and helpful!
March 26, 2019
There is a reason that Dr. Olegario is always voted the number one physician in Mitchell and it's because he treats every patient like the only patient he has that day. He is patient and respectful and I can't think of even one point that he needs to improve upon
March 22, 2019
I also had lab done, but was running late, they made sure I was in & out as quickly as possible
March 17, 2019
Always good and helpful.
March 14, 2019
I was very grateful that Dr Olegario spent time with me & wasn't rushed to move on to the next patient. Nurse was wonderful too.
March 12, 2019
I just really appreciate Dr. Olegario and his staff. They are so kind, caring, and helpful. Always explaining, and taking the time to listen. I appreciated getting seen for my illness in a timely manner. It helped for me to get on the mend sooner. Many thanks and appreciation go out to Dr. Olegario and his staff.
March 12, 2019
Dr Olegario and the staff are top notch. They all genuinely care and it is extremely evident by their attitude and compassion.
March 09, 2019
The doctor always has plenty of time for you & explains things thoroughly.
February 28, 2019
I think the receptionists should be more empathic rather than treating the person as a business client.
February 28, 2019
I always feel comfortable and confident with everyone there.

This directory contains information about the provider members of Independent Health Care Associates, Avera Health and all Avera entities, members of the Avera Medical Group, and employed select providers with Avera McKennan, Sioux Falls, SD and Avera Marshall, Marshall, MN and physicians with hospital privileges at Avera St. Luke's, Aberdeen, SD; Avera Sacred Heart, Yankton, SD; Avera Queen of Peace, Mitchell, SD; Avera St. Mary's, Pierre, SD.

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