Benjamin E. Cassell, MD
Gastroenterology Physician · Denver, CO
Benjamin E. Cassell, MD is a gastroenterology physician with a practice address in Denver, Colorado, and NPI 1184885790, issued on Jun 17, 2008. Check the license (Colorado DR.0057138, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Benjamin E. Cassell
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License numbers
- DR.0057138 CO
2011007282 MO
Self-reported in NPPES; status is on the state search - Practice location
- 1055 Clermont St, Denver, CO 80220
- Phone
- (303) 399-8020
- Enumerated
- Jun 17, 2008
- Record last updated
- Jul 6, 2016 (not updated in 10 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20160908002166); accepts Medicare assignment
- Medical or professional school
- University Of Texas Southwestern Medical School At Dallas, 2008
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 334 in Colorado → Look up another NPI →
Also registered at 1055 Clermont St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Heather Able, RNRegistered Nurse1124264726
- Sergio Aguilar, MSWClinical Social Worker1497099352
- Stephen Albert, D.P.M.Primary Podiatric Medicine Podiatrist1497798144
- Mary Albyn, R.PH.Pharmacist1477689073
- Edward Alvarez, RNRegistered Nurse1407919459
- Colleen Ambrozy, BS PHARMPharmacist1174570980
Verify Benjamin E. Cassell in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license DR.0057138Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
82% fewer Medicare Part D claims than the average gastroenterology physician in 2024
145 Medicare Part D claims for 75 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 27% of claims.
Most prescribed
- Gavilyte-C23 claims
- Omeprazole18 claims
- Colestipol Hcl16 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 91.1 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- Denver Health And Hospital AuthorityDenver, CO
- University Physicians IncorporatedAurora, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Benjamin E. Cassell among 334 gastroenterology physician records in Colorado
Benjamin E. Cassell, MD is one of 334 gastroenterology physician records with a practice address in Colorado. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 63% of them.
- NPI issued2008 · 63% of these records are older, 31% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated2008 · median 2003 among the 258 with a school on file
- Record last updated2016 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Colorado
There are 334 gastroenterology physician records in Colorado.
All 334 in Colorado → Every provider in Denver → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Jennifer Brenner, M.D.Denver, CO 802201760611305
- Aaron Burrows, MDDenver, CO 802201366491367
- Lyssa Chacko, MDDenver, CO 802201629115993
- Jonathan Fishman, MDDenver, CO 802201104813559
- Philip Guzelian, MDDenver, CO 802201619067394
- Mark Linkow, MDDenver, CO 802201639163587
- Lawrence Miller, M.D.Denver, CO 802201912116732
- Stephen New, M.D.Denver, CO 802201730488099
Common questions
What is Benjamin E. Cassell, MD's NPI number?
Benjamin E. Cassell, MD's National Provider Identifier (NPI) is 1184885790, issued on Jun 17, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Benjamin E. Cassell, MD located?
The NPPES record lists a practice address at 1055 Clermont St, Denver, CO, 80220. Phone: (303) 399-8020. Providers update this record themselves, so call before visiting.
How can I verify Benjamin E. Cassell, MD's license?
NPPES lists Colorado license number DR.0057138, as entered by the provider. Search the Colorado Medical Board at https://dpo.colorado.gov/Medical. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Benjamin E. Cassell, MD prescribe under Medicare Part D?
In 2024, Benjamin E. Cassell, MD had 145 Medicare Part D claims for 75 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Benjamin E. Cassell, MD's MIPS final score?
The 2023 MIPS final score is 91.1 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.