Summary

Dr. Tommy Oei is a gastroenterologist and internal medicine physician with nearly three decades of medical experience. He earned his medical degree from New York University School of Medicine and has built extensive expertise in digestive health and comprehensive internal medicine care over his 29-year career. Dr. Oei communicates with patients in English.

Dr. Oei practices at Kaiser Foundation Hospital in Fontana, California, where he focuses on complex digestive conditions and metabolic health. He treats patients with abdominal pain, cirrhosis, and Crohn's disease, providing specialized care for these challenging gastrointestinal disorders. His clinical work includes performing comprehensive metabolic panels and kidney transplant biopsies, reflecting his expertise in both diagnostic testing and advanced procedures. Patients rate Dr. Oei 4.0 out of 5 stars on average for his care.

AI-generated from data on this provider profile.

Quick Facts

  • 4
  • 29 years of experience
  • speaks English
  • New York University School Of Medicine
  • 2 specialties
  • 11 areas of expertise
  • 2 board certifications
  • 1 hospital affiliation
  • 1 office location
  • Male

Office Location

Kaiser Foundation Hospital

9961 Sierra AveFontana, CA 92335

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Dr. Tommy Tiong-Hien Oei, MDRachel Oliver, APRNJi Soo Choi, APRNChimdi Mfebe, APRN
GastroenterologyGastroenterologyGastroenterologyGastroenterology
Accepts New Patients Accepts New Patients Accepts New Patients
29 Years of Experience
No Virtual Visit Option Virtual Visit Available Virtual Visit Available Virtual Visit Available
Speaks English Speaks English Speaks English Speaks English
Fontana , CASACRAMENTO , CASACRAMENTO , CALittle Rock , AR
Med School: New York University School Of Medicine Med School: University of South Alabama Med School: New York University Med School: Chamberlain University College of Nursing
Current Profile
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Insurance Plans Accepted by Dr. Tommy Tiong-Hien Oei

Be sure to verify insurance information directly with your doctor's office, as it may undergo frequent changes.

Medical Specialties

Dr. Tommy Tiong-Hien Oei has the following 2 specialties

Specialty Expertise

Dr. Tommy Tiong-Hien Oei has the following 11 areas of expertise

  • Abdominal Pain
  • Acid Reflux Disease (Gastroesophageal Reflux / GERD)
  • Acid Reflux Disease (GERD)
  • Celiac Disease
  • Colonoscopy
  • Constipation
  • Hemorrhoids
  • Hepatitis C
  • Internal Medicine
  • Irritable Bowel Syndrome (IBS)
  • Ulcerative Colitis

Certifications, License, & Education

29 Years Experience

MEDICAL LICENSE

Medical Doctor, California, 2026, Active

EDUCATION & TRAINING

Medical School

New York University School Of MedicineGraduated in 1997

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Frequently Asked Questions

What languages does Dr. Tommy Oei speak?
Dr. Tommy Oei speaks English.
Is Dr. Tommy Oei accepting new patients?
Dr. Tommy Oei has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.
Does Dr. Tommy Oei accept my insurance?
You can see the insurance plans that Dr. Tommy Oei accepts on their Vitals profile.
Which hospitals is Dr. Tommy Oei affiliated with?
Dr. Tommy Oei is affiliated with Kaiser Foundation Hospital.
Where is Dr. Tommy Oei's office located?
Dr. Tommy Oei's office is located at 9961 Sierra Ave, Fontana, CA, 92335.

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