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

Individual provider Internal Medicine Physician · NPI 1699720995

Dr. Donald H Grenz, MD is an Internal Medicine in Bismarck, North Dakota. Graduated from University of North Dakota School of Medicine in 1997, 29 years ago. Practices with Innovis Health LLC, a 573-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

401 N 9th St
Bismarck, ND 58501-4507
Phone: (701) 530-6000
Fax: (701) 530-6430
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 8190 (ND)

Record details

NPI number1699720995
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 24, 2006
Last updated in NPPESJuly 25, 2014
Mailing address401 N 9th St, Bismarck, ND 58501-4507

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF NORTH DAKOTA SCHOOL OF MEDICINE
Graduated 1997 (29 years in practice)
Group practice Innovis Health Llc — 573 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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