Summary

Dr. Dennis Riff is a gastroenterologist and internal medicine physician with 55 years of experience in treating digestive health conditions. He completed his medical education at Sidney Kimmel Medical College at Thomas Jefferson University, building a strong foundation for his extensive career in medicine. His dual specialties allow him to provide comprehensive care for both complex gastrointestinal disorders and general internal medicine needs. Dr. Riff is fluent in Spanish and Chinese, enabling him to serve diverse patient populations in their preferred languages.

Dr. Riff practices at multiple locations throughout Anaheim, California, and maintains affiliations with several respected hospitals including AHMC Anaheim Regional Medical Center, West Anaheim Medical Center, Orange County Global Medical Center, and Anaheim Community Hospital. He specializes in treating conditions such as colon polyps, abdominal pain, and GERD, helping patients find relief from uncomfortable digestive symptoms. Riff performs important diagnostic procedures including colonoscopy and lower GI endoscopy to identify and address gastrointestinal concerns. Patients have given him an average rating of 4.5 out of 5, reflecting their satisfaction with his care and expertise.
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Overview based on verified provider data

Quick Facts

  • accepting new patients
  • 4.5
  • 55 years of experience
  • speaks Spanish, Chinese
  • 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

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, MDChimdi Mfebe, APRNBhavana Akotia, PA-CTheresa Obonyano, 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 Spanish, Chinese Speaks English Speaks English Speaks English
Anaheim , CALittle Rock , ARTempe , AZSACRAMENTO , CA
Med School: Sidney Kimmel Medical College At Thomas Jefferson University Med School: Chamberlain University College of Nursing Med School: Charles R Drew University Med School: The University of Texas Health Science Center at Houston
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

How can I make an appointment with Dr. Dennis Riff?
You can find contact information for Dr. Dennis Riff here on Vitals.
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.
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.
Which hospitals is Dr. Dennis Riff affiliated with?
Dr. Dennis Riff is affiliated with Ahmc Anaheim Regional Medical Center, West Anaheim Medical Center, Orange County Global Medical Center, and Anaheim Community Hospital Llc.
Does Dr. Dennis Riff accept my insurance?
You can see the insurance plans that Dr. Dennis Riff accepts on their Vitals profile.

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