Doctor profile · Federal record

Dr. Benjamin Cassell, MD

Gastroenterology Physician (CMS: Gastroenterology) · Gastroenterology Physician · Denver, CO

  • NPI 1184885790
  • Accepts Medicare
  • MIPS 86.1 / 100 · 2023
  • 18 yrs in practice
  • Licensed in 2 states
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
1055 Clermont St
Denver, CO 802203808
(303) 399-8020
Mailing address
Po Box 110429
Aurora, CO 800420429

Credentials & registration

NPPES · NUCC
NPI registered
June 2008 — 18 yrs on file
Profile last updated
July 6, 2016
Year of graduation
2008 — 18 yrs since
Specialty taxonomy
207RG0100X — NUCC code
State licenses (2)
Colorado #DR.0057138 · Missouri #2011007282

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1184885790. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
36
Distinct HCPCS
2
Medicare allowed
$3,559
HCPCS Description Services Patients Avg allowed
99214 Established patient office or other outpatient visit, 30-39 minutes 23 15 $98
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 13 13 $100

In context: peer comparison

Among 21 peers in this city , average services per provider: 105. This provider delivers 0.3× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
98
Patients
35
Total drug cost
$4,115
Drug Type Claims Patients Total cost
Omeprazole Generic 25 0 $257
Gavilyte-C (Peg3350/Sod Sulf,bicarb,cl/Kcl) Brand 20 20 $388
Colestipol Hcl Generic 15 0 $1,467
Sod Sulf-Potass Sulf-Mag Sulf (Sodium, Potassium,mag Sulfates) Brand 15 15 $1,137
Diphenoxylate-Atropine (Diphenoxylate Hcl/Atropine) Brand 12 0 $531
Pantoprazole Sodium Generic 11 0 $335

Frequently asked questions

Auto-generated from federal data
What is Dr. Benjamin Cassell's medical specialty?
Dr. Benjamin Cassell practices Gastroenterology Physician in Denver, CO.
Where does Dr. Benjamin Cassell practice?
Dr. Benjamin Cassell practices at 1055 Clermont St, Denver, CO 802203808. Office phone: 3033998020.
What is Dr. Benjamin Cassell's NPI?
Dr. Benjamin Cassell's National Provider Identifier (NPI) is 1184885790, issued by NPPES.
Does Dr. Benjamin Cassell accept Medicare assignment?
Yes. Dr. Benjamin Cassell accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Benjamin Cassell commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (HCPCS 43239). Source: CMS Medicare Physician & Other Practitioners file.