Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. A Marc Nielsen, MD

Individual provider Family Medicine Physician · NPI 1063430122

Dr. A Marc Nielsen, MD is a Family Practice in Grand Forks, North Dakota. Graduated from University of North Dakota School of Medicine in 1997, 29 years ago. Practices with Altru Health System, a 667-clinician group and accepts Medicare assignment. Licensed in North Dakota.

Years since qualifying
29
Trained at
University of North Dakota School of Medicine
Licensed in
ND
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

725 Hamline St
Grand Forks, ND 58203-2819
Phone: (701) 780-6800
Fax: (701) 780-4391
Show map & directions

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

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 8011 (ND)

Record details

NPI number1063430122
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 17, 2006
Last updated in NPPESJuly 10, 2020
Certification dateJuly 10, 2020

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolUNIVERSITY OF NORTH DAKOTA SCHOOL OF MEDICINE
Graduated 1997 (29 years in practice)
Group practice Altru Health System — 667 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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