Physician Profile
Dennis S. Riff, M.D.
Unclaimed ProfileAbout Dr. Riff
Dennis S. Riff, M.D. is a specialist practicing in Anaheim, CA. Dennis trained at Jefferson Medical College of Thomas Jefferson University, graduating in 1971. According to Medicare claims data, Dennis cared for 612 Medicare patients across 5,867 services. The services billed most often include injection, inclisiran, 1 mg, established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, and subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (714) 778-1300
- Email not available
Practice Locations
1211 W LA PALMA AVE STE 306
Anaheim, CA 92801
Procedures Most Often Billed to Medicare
5,867 services · 612 patients · 12 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43239 |
49 | As often as other peers in Specialist |
| Biopsy of large bowel using a flexible endoscope | Procedure | 45380 |
30 | Less often than most peers in Specialist |
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Procedure | 45385 |
28 | Less often than most peers in Specialist |
| Insertion of stomach tube using a flexible endoscope | Procedure | 43246 |
17 | Less often than most peers in Specialist |
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
30 | Less often than most peers in Specialist |
| Injection, inclisiran, 1 mg | Drug given | J1306 |
5,112 | Too few peers to compare |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
195 | As often as other peers in Specialist |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | Office visit | 99233 |
170 | More often than most peers in Specialist |
| Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | Office visit | 99222 |
114 | More often than most peers in Specialist |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
69 | More often than most peers in Specialist |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other specialists at this location 2
Same specialty, same street address — most likely the same department or group.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other specialists in Anaheim 8
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Jefferson Medical College of Thomas Jefferson University 8
Other providers in the same specialty who trained at the same institution.
Class of 1971 at Jefferson Medical College of Thomas Jefferson University 8
Providers who graduated from the same medical school in the same year.
Also performs Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 8
Providers in CA who bill this service to Medicare most often.
Common questions
What kind of doctor is Dennis S. Riff?
Dennis S. Riff is a specialist in Anaheim, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
What is Dennis S. Riff's address?
Dennis S. Riff is listed at 1211 W la Palma Ave Ste 306, Anaheim, CA 92801. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dennis S. Riff?
The number on file is (714) 778-1300. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dennis S. Riff's NPI number?
Dennis S. Riff's National Provider Identifier is 1922004662. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dennis S. Riff train?
Dennis S. Riff attended Jefferson Medical College of Thomas Jefferson University, graduating in 1971. This comes from the CMS National Downloadable File.
CMS public data
How long has Dennis S. Riff been practicing?
Dennis S. Riff has 55 years experience. Calculated from a graduation year of 1971, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dennis S. Riff perform?
According to Medicare billing data, Dennis S. Riff performs procedures including biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope, biopsy of large bowel using a flexible endoscope and removal of polyps or growths of large bowel using an endoscope with mechanical snare; provides treatments such as injection of drug or substance under skin or into muscle, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dennis S. Riff confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dennis S. Riff. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.