NPPES file of Aug 9, 2026

Marcin Szember, MD

Gastroenterology Physician · Grand Forks, ND

Marcin Szember, MD is a gastroenterology physician with a practice address in Grand Forks, North Dakota, and NPI 1023295300, issued on Jan 29, 2008. Check the license (North Dakota 16013, as entered in NPPES) on the North Dakota Board of Medicine; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1023295300
Name
Marcin Szember
Credential
MD
Primary taxonomy
Gastroenterology Physician 207RG0100X
License numbers
16013 ND
4301100644 MI
25MA08520900 NJ
Self-reported in NPPES; status is on the state search
Practice location
4440 S. Washington St. - Altru Professional Center, Grand Forks, ND 58201
Phone
(701) 732-7000
Enumerated
Jan 29, 2008
Record last updated
Oct 2, 2020 (not updated in 6 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20191118000401); accepts Medicare assignment
Medical or professional school
Rutgers New Jersey Medical School, 2005
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Verify Marcin Szember in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersNorth Dakota Board of Medicine
    Search for license 16013
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the North Dakota license search

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87% fewer Medicare Part D claims than the average gastroenterology physician in 2024

105 Medicare Part D claims for 47 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D.

  1. Marcin Szember105
  2. Specialty average811

Most prescribed

  1. Omeprazole49 claims
  2. Famotidine23 claims
  3. Pantoprazole Sodium17 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 3 group practices

  1. Altru Health SystemGrand Forks, ND
  2. Dlp Marquette Physician Practices IncMarquette, MI
  3. Trinity HealthMinot, ND

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Marcin Szember among 32 gastroenterology physician records in North Dakota

Marcin Szember, MD is one of 32 gastroenterology physician records with a practice address in North Dakota. 88% 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 · 88% of these records are
  • In the CMS Doctors and Clinicians fileYes · 88% of these records are
  • Graduated2005 · median 2003 among the 28 with a school on file
  • Record last updated2020 · 50% 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 Dakota 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 Dakota

There are 32 gastroenterology physician records in North Dakota.

The 8 gastroenterology physician records with the nearest ZIP codes

  1. Anthony Chu, MDGrand Forks, ND 582011649365990
  2. Krishna Gurram, MDGrand Forks, ND 582011255360244
  3. Howard Hack, M.D.Grand Forks, ND 582011952483786
  4. James Wood, MDGrand Forks, ND 582061073573044
  5. Ross Meidinger, M.D.Fargo, ND 581221043420722
  6. Stephanie Melquist, MD, MPHFargo, ND 581041780118331
  7. Fadel Nammour, MDFargo, ND 581041922039684
  8. Kimberly Kolkhorst, DOFargo, ND 581031245558428

Common questions

What is Marcin Szember, MD's NPI number?

Marcin Szember, MD's National Provider Identifier (NPI) is 1023295300, issued on Jan 29, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Marcin Szember, MD located?

The NPPES record lists a practice address at 4440 S. Washington St. - Altru Professional Center, Grand Forks, ND, 58201. Phone: (701) 732-7000. Providers update this record themselves, so call before visiting.

How can I verify Marcin Szember, MD's license?

NPPES lists North Dakota license number 16013, as entered by the provider. Search the North Dakota Board of Medicine at https://www.ndbom.org/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Marcin Szember, MD prescribe under Medicare Part D?

In 2024, Marcin Szember, MD had 105 Medicare Part D claims for 47 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.