Paul Norman Cassis, M.D.
Gastroenterology Physician · Durham, NC
Paul Norman Cassis, M.D. is a gastroenterology physician with a practice address in Durham, North Carolina, and NPI 1992191795, issued on Apr 9, 2015. Check the license (North Carolina 2022-01167, as entered in NPPES) on the North Carolina Medical Board; the Medicare figures below come from public CMS files.
- Name
- Paul Norman Cassis
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 2022-01167 NC
Self-reported in NPPES; status is on the state search - Practice location
- 249 NC-54 Ste 200, Durham, NC 27713
- Phone
- (919) 806-8322
- Enumerated
- Apr 9, 2015
- Record last updated
- Mar 15, 2024
- Fax
- (919) 433-0409
- Medicare enrollment
- Enrolled (PECOS I20230109002202); accepts Medicare assignment
- Medical or professional school
- West Virginia University School Of Medicine, 2015
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 681 in North Carolina → Look up another NPI →
Verify Paul Norman Cassis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNorth Carolina Medical Board
Search for license 2022-01167Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
48% fewer Medicare Part D claims than the average gastroenterology physician in 2024
420 Medicare Part D claims for 213 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims.
Most prescribed
- Gavilyte-G109 claims
- Omeprazole81 claims
- Peg-3350 And Electrolytes29 claims
- Pantoprazole Sodium25 claims
- Mesalamine19 claims
- Sod Sulf-Potass Sulf-Mag Sulf19 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.
Industry payments in 2024: $151.95
8 payments; by number, the most common kind was food and beverage; the largest payer was Pfizer Inc. The 13,350 providers of this specialty with any payment received $5,015.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Duke Health Integrated Practice IncDurham, NC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Paul Norman Cassis among 681 gastroenterology physician records in North Carolina
Paul Norman Cassis, M.D. is one of 681 gastroenterology physician records with a practice address in North Carolina. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 83% of them.
- NPI issued2015 · 83% of these records are older, 13% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 73% of these records are
- Graduated2015 · median 2002 among the 498 with a school on file
- Record last updated2024 · 48% 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 North Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in North Carolina
There are 681 gastroenterology physician records in North Carolina.
All 681 in North Carolina → Every provider in Durham → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Scott Brazer, MDDurham, NC 277131891755153
- Douglas Drossman, MDDurham, NC 277131962571232
- David Tendler, MDDurham, NC 277131811957731
- Laura Bach, D.O.Durham, NC 277101023403623
- Bryan Badal, MDDurham, NC 277101710483342
- Danny Cheriyan, MDDurham, NC 277101730593013
- William Clarke, MDDurham, NC 277101477996650
- Raghubinder Gill, M.D.Durham, NC 277101013310457
Common questions
What is Paul Norman Cassis, M.D.'s NPI number?
Paul Norman Cassis, M.D.'s National Provider Identifier (NPI) is 1992191795, issued on Apr 9, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Paul Norman Cassis, M.D. located?
The NPPES record lists a practice address at 249 NC-54 Ste 200, Durham, NC, 27713. Phone: (919) 806-8322. Providers update this record themselves, so call before visiting.
How can I verify Paul Norman Cassis, M.D.'s license?
NPPES lists North Carolina license number 2022-01167, as entered by the provider. Search the North Carolina Medical Board at https://portal.ncmedboard.org/verification/search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Paul Norman Cassis, M.D. prescribe under Medicare Part D?
In 2024, Paul Norman Cassis, M.D. had 420 Medicare Part D claims for 213 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.