Summary

Dr. Dennis Riff is a gastroenterologist and internal medicine physician with 55 years of medical experience. He earned his medical degree from Sidney Kimmel Medical College at Thomas Jefferson University. Dr. Riff specializes in digestive health conditions and provides comprehensive internal medicine care. He is fluent in Chinese and Spanish, allowing him to serve diverse patient populations.

Dr. Riff practices at several locations throughout Anaheim, California, and maintains affiliations with AHMC Anaheim Regional Medical Center, West Anaheim Medical Center, Orange County Global Medical Center, and Anaheim Community Hospital. His expertise includes treating colon polyps, abdominal pain, and GERD. He performs colonoscopies, lower GI endoscopies, and laparoscopic procedures to diagnose and treat digestive system conditions. Patients have given him an average rating of 4.5 out of 5 on Vitals.

Overview based on verified provider data

Quick Facts

  • accepting new patients
  • 4.5
  • 55 years of experience
  • speaks Chinese, Spanish
  • Sidney Kimmel Medical College At Thomas Jefferson University
  • 17 written reviews
  • 2 specialties
  • 9 areas of expertise
  • 2 board certifications
  • 4 hospital affiliations
  • 3 office locations
  • Male

Patients’ Perspective

  • Gave an accurate diagnosis
  • Had a good bedside manner
  • Spent time with me

Office Locations

Dr. Dennis Stone Riff has 3 locations

Associated Gastroenterology Medical Group

1211 W La Palma Ave Ste 306Anaheim, CA 92801
Mon8:30 am - 5:00 pm
Tue8:30 am - 5:00 pm
Wed8:30 am - 5:00 pm
Thu8:30 am - 4:00 pm
Fri8:30 am - 1:00 pm
SatClosed
SunClosed

Anaheim Endoscopy Center

1211 W La Palma Ave Ste 301Anaheim, CA 92801
Mon6:30 am - 3:00 pm
Tue6:30 am - 3:00 pm
Wed6:30 am - 3:00 pm
Thu6:30 am - 3:00 pm
Fri6:30 am - 3:00 pm
SatClosed
SunClosed

Orange County Medical Center

3440 E La Palma AveAnaheim, CA 92806

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Dr. Dennis Stone Riff, MDBhavana Akotia, PA-CChimdi Mfebe, APRNRachel Oliver, APRN
GastroenterologyGastroenterologyGastroenterologyGastroenterology
Accepts New Patients Accepts New Patients Accepts New Patients Accepts New Patients
4.5 
55 Years of Experience
No Virtual Visit Option Virtual Visit Available Virtual Visit Available Virtual Visit Available
Speaks Chinese, Spanish Speaks English Speaks English Speaks English
Anaheim , CATempe , AZLittle Rock , ARSacramento , CA
Med School: Sidney Kimmel Medical College At Thomas Jefferson University Med School: Charles R Drew University Med School: Chamberlain University College of Nursing Med School: University of South Alabama
Current Profile
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Insurance Plans Accepted by Dr. Dennis Stone Riff

  • Accepts Medicare
  • Accepts Medicaid

Medical Specialties

Dr. Dennis Stone Riff has the following 2 specialties

Specialty Expertise

Dr. Dennis Stone Riff has the following 9 areas of expertise

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

Certifications, License, & Education

55 Years Experience

Dr. Dennis Stone Riff holds an expired medical license in the state of California.

Medical License

Medical Doctor with an expired medical license in the state of California that expired in 2025.

Education & Training

Medical School

Graduated from Sidney Kimmel Medical College At Thomas Jefferson University in 1971.

NPI Number

Dr. Riff's NPI number is 1922004662.

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Frequently Asked Questions

Where is Dr. Dennis Riff's office located?
Dr. Dennis Riff's office is located at 1211 W La Palma Ave Ste 306, Anaheim, CA, 92801.
What languages does Dr. Dennis Riff speak?
Dr. Dennis Riff speaks Chinese and Spanish.
Does Dr. Dennis Riff accept my insurance?
You can see the insurance plans that Dr. Dennis Riff accepts on their Vitals profile.
Is Dr. Dennis Riff accepting new patients?
Dr. Dennis Riff is accepting new patients on Vitals. View Dr. Dennis Riff's profile on Vitals to make an appointment.
Does Dr. Dennis Riff accept virtual/telehealth appointments?
Dr. Dennis Riff has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.

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