Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dennis S Riff, MD

Individual provider Specialist · NPI 1922004662

Dennis S Riff, MD is a Gastroenterology in Anaheim, California. Graduated from Jefferson Medical College of Thomas Jefferson University in 1971, 55 years ago. Practices with Associated Gastroenterology Medical Group, a 6-clinician group, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
55
Trained at
Jefferson Medical College of Thomas Jefferson University
Licensed in
CA
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1211 W La Palma Ave Ste 306
Anaheim, CA 92801-2811
Phone: (714) 778-1300
Fax: (714) 778-0303
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Specialist (primary) Taxonomy 174400000X · Licence G22807 (CA)

Record details

NPI number1922004662
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 27, 2005
Last updated in NPPESJanuary 14, 2013

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGASTROENTEROLOGY
Also practisesINTERNAL MEDICINE
Medical schoolJEFFERSON MEDICAL COLLEGE OF THOMAS JEFFERSON UNIVERSITY
Graduated 1971 (55 years in practice)
Group practice Associated Gastroenterology Medical Group — 6 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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