Summary

Dr. Andrea Tieng is a board-certified gastroenterologist and internal medicine physician with 23 years of experience caring for patients with digestive health conditions. She earned her medical degree from SUNY Downstate Medical Center College of Medicine and completed her residency training at North Shore-Long Island Jewish Health System. Her dual specialty training allows her to provide comprehensive care for both complex gastrointestinal disorders and general internal medicine needs. Dr. Tieng is fluent in English and Spanish, helping her connect with diverse patient populations.

Dr. Tieng practices at Community Hospital of San Bernardino and San Antonio Regional Hospital in Upland, with hospital affiliations at Arrowhead Regional Medical Center. She specializes in treating colon polyps and diverticular disease, conditions that affect many patients as they age. Her expertise includes performing colonoscopies and lower gastrointestinal endoscopy procedures with sedation to ensure patient comfort during diagnostic testing. Patients have given her an average rating of 3.1 stars for her care.
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AI-generated from data on this provider profile.

Quick Facts

  • 3.1
  • 23 years of experience
  • 58 insurance plans accepted
  • speaks English, Spanish
  • North Shore-Long Island Jewish Health System
  • 2 written reviews
  • 2 specialties
  • 16 areas of expertise
  • 2 board certifications
  • 1 hospital affiliation
  • 2 office locations
  • Female

Office Locations

Dr. Andrea Sung Tieng has 2 locations

Community Hospital Of San Bernardino

1805 Medical Center DrSan Bernardino, CA 92411

San Antonio Regional Hospital

999 San Bernardino RdUpland, CA 91786

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Dr. Andrea Sung Tieng, MDRachel Oliver, APRNAshley Anderson, APRNJan Seiler, APRN
GastroenterologyGastroenterologyGastroenterologyGastroenterology
Accepts New Patients Accepts New Patients Accepts New Patients
3.1 
23 Years of Experience
No Virtual Visit Option Virtual Visit Available Virtual Visit Available Virtual Visit Available
Speaks English, Spanish Speaks English Speaks English Speaks English
San Bernardino , CASACRAMENTO , CASACRAMENTO , CAMontgomery , AL
Med School: Suny Downstate Med Ctr Med School: University of South Alabama Med School: East Tennessee State University - Quillen College of Medicine Med School: Georgia State University
Current Profile
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Insurance Plans Accepted by Dr. Andrea Sung Tieng

  • Aetna
  • Aetna - HMO
  • Aetna - Medicare
  • Alignment Health Plan
  • Alignment Health Plan - HMO
  • AlphaCare
  • AltaMed Senior BuenaCare (PACE)
  • AmeriHealth
  • AmeriHealth - PPO
  • Anthem Blue Cross
  • Anthem Blue Cross and Blue Shield of Georgia
  • BLUE CROSS of CALIFORNIA
  • BLUE CROSS of CALIFORNIA - HMO
  • Blue Shield of California
  • Blue Shield of California - HMO
  • Brand New Day
  • CareFirst Blue Cross Blue Shield
  • CareMore
  • CareMore - Medicare (Advantage HMO)
  • CHAMPVA
  • Cigna
  • Contra Costa Health Plan
  • First Health (Coventry Health Care)
  • First Health (Coventry Health Care) - PPO
  • Florida Blue: Blue Cross Blue Shield of Florida
  • GEHA
  • Health Net
  • Health Net - HMO
  • Humana
  • Humana - HMO
  • Inland Empire Health Plan
  • Kaiser Permanente
  • Kaiser Permanente - Medicaid (Managed)
  • L.A. Care Health Plan
  • L.A. Care Health Plan - HMO
  • Magellan Health
  • Medicaid - Medicaid
  • Medicaid - Medicaid (Managed)
  • Medical Mutual
  • Medicare
  • Medicare - Medicaid
  • Medicare - Medicare
  • Meritain Health
  • Moda Health
  • Molina Healthcare
  • Molina Healthcare - Medicaid (Managed)
  • Optum Health
  • Priority Health
  • SCAN Health Plan
  • SCAN Health Plan - HMO
  • STLDentalPlan| LLC
  • Tricare
  • UnitedHealthcare
  • UnitedHealthcare - HMO
  • UnitedHealthcare - Medicare
  • UnitedHealthcare - PPO
  • Wellcare
  • Western Health Advantage

Medical Specialties

Dr. Andrea Sung Tieng has the following 2 specialties

Specialty Expertise

Dr. Andrea Sung Tieng has the following 16 areas of expertise

  • Abdominal Pain
  • Acid Reflux Disease (Gastroesophageal Reflux / GERD)
  • Acid Reflux Disease (GERD)
  • Celiac Disease
  • Colonoscopy
  • Constipation
  • Gastrointestinal Diseases (GI Diseases)
  • Hemorrhoids
  • Hepatitis
  • Hepatitis C
  • Inflammatory Bowel Diseases (IBD)
  • Internal Medicine
  • Irritable Bowel Syndrome (IBS)
  • Liver Diseases
  • Ulcerative Colitis
  • Viral Human Hepatitis

Certifications, License, & Education

23 Years Experience

MEDICAL LICENSE

Medical Doctor, California, 2026, Active

EDUCATION & TRAINING

Residency

North Shore-Long Island Jewish Health System

Medical School

Suny Downstate Med Ctr
Suny Downstate Medical Center College Of MedicineGraduated in 2003

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Frequently Asked Questions

Is Dr. Andrea Tieng accepting new patients?
Dr. Andrea Tieng has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.
Which hospitals is Dr. Andrea Tieng affiliated with?
Dr. Andrea Tieng is affiliated with Arrowhead Regional Medical Center.
Does Dr. Andrea Tieng accept my insurance?
You can see the insurance plans that Dr. Andrea Tieng accepts on their Vitals profile.
Does Dr. Andrea Tieng accept virtual/telehealth appointments?
Dr. Andrea Tieng has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
Where is Dr. Andrea Tieng's office located?
Dr. Andrea Tieng's office is located at 1805 Medical Center Dr, San Bernardino, CA, 92411.

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