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

Dr. Jon Mark Grudem, MD

Individual provider Neurology Physician · NPI 1477649531

Dr. Jon Mark Grudem, MD is a Neurology in North Sioux City, South Dakota. Graduated from Oregon Health Sciences University School of Medicine in 2004, 22 years ago. Practices with Cnos PC, a 98-clinician group. Licensed in Iowa and South Dakota.

Years since qualifying
22
Trained at
Oregon Health Sciences University School of Medicine
Licensed in
IA, SD
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

575 N Sioux Point Rd
North Sioux City, SD 57049-5312
Phone: (605) 217-2667
Fax: (605) 217-2900
Show map & directions

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

Specialties & licences

Neurology Physician (primary) Taxonomy 2084N0400X · Licence 7354 (SD)
Neurology Physician Taxonomy 2084N0400X · Licence 38576 (IA)

Record details

NPI number1477649531
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 5, 2006
Last updated in NPPESJanuary 13, 2011
Mailing address575 N Sioux Point Rd, North Sioux City, SD 57049-5312

Medicare enrollment

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

Medicare specialtyNEUROLOGY
Medical schoolOREGON HEALTH SCIENCES UNIVERSITY SCHOOL OF MEDICINE
Graduated 2004 (22 years in practice)
Group practice Cnos Pc — 98 clinicians
Accepts Medicare assignment Not indicated
Practice locations3 on file with Medicare