Jun-Ichi Ohara, M.D., Ph.D. is a ABIM Board Certified gastroenterologist (ABIM: American Board of Internal Medicine).

After leaving University of Colorado Health Sciences Center, where he was a research associate professor, Dr. Ohara started private practice in southern California in 1996.

Dr. Ohara has been seeing patients as a gastroenterology specialist as well as a general internist.






Dr. Ohara is a gastroenterologist who specializes in the following medical problems:

  • Esophageal cancer, stomach cancer, colon cancer, liver cancer, pancreatic cancer or other malignant tumors (or those who worry about GI malignancy)
  •  Hepatitis B or hepatitis C (or those who worry about viral or any other hepatitis)
  •  Difficulty swallowing or foreign body sensation, or discomfort in the throat
  • Bad breath
  • Heartburn, excessive burping or hiccupping, abdominal bloating, abdominal discomfort
  •  Abdominal pain
  • Back pain and hip area pain
  • Indigestion
  • Excessive weight loss or gain
  • Constipation or diarrhea, nausea and/or vomiting
  • Vomiting blood or bloody stools
  • Anorectal bleed
  • Hemorrhoids problem, anal pain or excessive itching

We will take care of your medical problem(s) with respect and professionalism.

This is a waiting room of Odyssey ASC Endoscopy Center. 

Odyssey ASC Endoscopy Center has cleared all requirements and regulations set forth by Department of Health and Human Services and Public Health Agency of State of California.

This facility is Medicare certified.

Therefore services rendered in Odyssey ASC Endoscopy Center will be covered by Medicare.


Odyssey ASC Endoscopy Center also has contract(s) with many other private insurances such as Aetna, Blue Shield, Cigna/Great West, United Healthcare, Nippon Life Insurance, AARP, TriCare for Life, TriCare West.

Currently Blue Cross is considering our application.

Persons without any insurance are also able to use Odyssey ASC Endoscopy Center.





This is a preparation area for endoscopy procedure(s). It is clean and bright.

Patients will change clothes here and be prepared for the procedures: then the bed will be moved to an another procedure room.


Patients will be back to this area after procedure(s) and his/her recovery will be monitored closely.

Odyssey ASC Endoscopy Center was designed and constructed by an architect and his construction company specializing in Ambulatory Surgery Center. Therefore the preparation area is well equipped for emergency situation.

Dr. Ohara and all nurses have been trained for emergency situation and holds cardiac life support certification.




This is a picture taken just prior to upper GI endoscopy. The procedure room is spacious and well equipped.

The patient in a photograph is a real patient.

As described above the facility is designed by an architect specialized in Ambulatory Surgery Center, the procedure room is well equipped.

Patients have painless procedure(s) in safe environment, as same as in a hospital.

Our facility fee claimed to insurance company is much less compared to that from hospitals.

Therefore, our service is simply faster, less hectic, safe, and less expensive.




The endoscope is disinfected using an automated reprocessing machine with specialized enzyme wash solution and powerful germicidal aldehyde solution.

All other materials beside the endoscopy is used only once and then discarded.

Preventing infection is a high priority. Therefore we pay keen attention in all aspects of our practice in order to prevent infection.




One of our nurses will take every patient to the front area of Odyssey ASC Endoscopy Center in order to assist the patient's pick up.

Patients are followed up for a few days after the procedure.

Dr. Ohara has a clinic office (suite#170A) next door to Odyssey ASC Endoscopy Center (suite#175) where he see patients as a gastroenterology specialist as well as a general internist from Monday through Saturday every week.

It is demanding task for health care providers to serve for patients every Saturday, however, we have been doing this since 1996 when our clinic was begun based on our mission of "serving for people".


We pay special attention to the privacy of our patients.


Not only Dr. Ohara but every staffs of our clinic and Odyssey ASC Endoscopy Center are dedicated and eager to provide compassionate and thoughtful medical care.


Our team work is simply higher.


The insurance claim and billing work are handled by professional specialists.