Oliver W. Cass, MD
Gastroenterology Physician · Minneapolis, MN
Oliver W. Cass, MD is a gastroenterology physician with a practice address in Minneapolis, Minnesota, and NPI 1497702310, issued on May 27, 2006. Check the license (Minnesota 24967, as entered in NPPES) on the Minnesota Board of Medical Practice; the Medicare figures below come from public CMS files.
- Name
- Oliver W. Cass
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 24967 MN
Self-reported in NPPES; status is on the state search - Practice location
- 6500 Excelsior Blvd, Minneapolis, MN 55404
- Phone
- (952) 993-2640
- Enumerated
- May 27, 2006
- Record last updated
- Jul 16, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 085567700 MN
- Medicare enrollment
- Enrolled (PECOS I20080411000462); accepts Medicare assignment
- Medical or professional school
- University Of Minnesota Medical School, 1978
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 457 in Minnesota → Look up another NPI →
Verify Oliver W. Cass in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMinnesota Board of Medical Practice
Search for license 24967Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3% fewer Medicare Part D claims than the average gastroenterology physician in 2024
787 Medicare Part D claims for 410 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Ondansetron Hcl269 claims
- Gavilyte-G207 claims
- Gavilyte-C66 claims
- Omeprazole53 claims
- Peg 3350-Electrolyte33 claims
- Peg-3350 And Electrolytes30 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.
Bills Medicare through one group practice
- Park Nicollet ClinicBloomington, MN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Oliver W. Cass among 457 gastroenterology physician records in Minnesota
Oliver W. Cass, MD is one of 457 gastroenterology physician records with a practice address in Minnesota. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 55% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 73% of these records are
- Graduated1978 · median 2006 among the 334 with a school on file
- Record last updated2021 · 58% 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 Minnesota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Minnesota
There are 457 gastroenterology physician records in Minnesota.
All 457 in Minnesota → Every provider in Minneapolis → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Stuart Borken, MDMinneapolis, MN 554041487653564
- Jose Debes, MDMinneapolis, MN 554041447467816
- Jason Eckmann, MDMinneapolis, MN 554041861856536
- Martin Freeman, MDMinneapolis, MN 554041013955848
- Yuri Hanada, MDMinneapolis, MN 554041730574492
- David Leung, MDMinneapolis, MN 554041215469127
- Craig Peine, MDMinneapolis, MN 554041932147972
- Mustafa Tiewala, M.D.Minneapolis, MN 554041598960312
Common questions
What is Oliver W. Cass, MD's NPI number?
Oliver W. Cass, MD's National Provider Identifier (NPI) is 1497702310, issued on May 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Oliver W. Cass, MD located?
The NPPES record lists a practice address at 6500 Excelsior Blvd, Minneapolis, MN, 55404. Phone: (952) 993-2640. Providers update this record themselves, so call before visiting.
How can I verify Oliver W. Cass, MD's license?
NPPES lists Minnesota license number 24967, as entered by the provider. Search the Minnesota Board of Medical Practice at https://mn.gov/boards/medical-practice/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Oliver W. Cass, MD prescribe under Medicare Part D?
In 2024, Oliver W. Cass, MD had 787 Medicare Part D claims for 410 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
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.