Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. Marcin Szember, MD

Individual provider Internal Medicine Physician · NPI 1023295300

Dr. Marcin Szember, MD practises Gastroenterology in Grand Forks, North Dakota. Graduated from Rutgers New Jersey Medical School in 2005, 21 years ago. Practices with Altru Health System, a 667-clinician group and accepts Medicare assignment. Licensed in Michigan, North Dakota and New Jersey.

Years since qualifying
21
Trained at
Rutgers New Jersey Medical School
Licensed in
MI, ND, NJ
In the registry since
2008
Specialties on file
5
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

4440 S Washington St - Altru Professional Ctr
Grand Forks, ND 58201-7245
Phone: (701) 732-7000
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 16013 (ND)
Internal Medicine Physician Taxonomy 207R00000X · Licence 25MA08520900 (NJ)
Gastroenterology Physician Taxonomy 207RG0100X · Licence 4301100644 (MI)
Gastroenterology Physician Taxonomy 207RG0100X · Licence 25MA08520900 (NJ)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1023295300
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 29, 2008
Last updated in NPPESOctober 2, 2020
Certification dateOctober 2, 2020

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGASTROENTEROLOGY
Also practisesINTERNAL MEDICINE
Medical schoolRUTGERS NEW JERSEY MEDICAL SCHOOL
Graduated 2005 (21 years in practice)
Group practice Altru Health System — 667 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Upper gastrointestinal (GI) endoscopy for acid reflux 422 times · 98th percentile
Colonoscopy 113 times · 82nd percentile

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients302
Services billed 809 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Altru Health System

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 667 clinicians in the practice; 12 are shown here.

Other providers in Grand Forks