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

Dr. Charles Owen Gensmer, MD

Individual provider Sleep Medicine (Internal Medicine) Physician · NPI 1356497150

Dr. Charles Owen Gensmer, MD practises Internal Medicine in Coon Rapids, Minnesota. Graduated from University of Minnesota Medical School in 1976, 50 years ago. Practices with Allina Health System, a 3,867-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Minnesota.

Years since qualifying
50
Trained at
University of Minnesota Medical School
Licensed in
MN
In the registry since
2007
Specialties on file
3
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

9055 Springbrook Dr NW
Coon Rapids, MN 55433-5841
Phone: (763) 780-9155
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Pulmonary Disease Physician (primary) Taxonomy 207RP1001X · Licence 26057 (MN)
Sleep Medicine (Internal Medicine) Physician Taxonomy 207RS0012X · Licence 26057 (MN)
Internal Medicine Physician Taxonomy 207R00000X · Licence 26057 (MN)

Record details

NPI number1356497150
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 25, 2007
Last updated in NPPESJuly 28, 2026
Certification dateJuly 28, 2026

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesSLEEP MEDICINE
Medical schoolUNIVERSITY OF MINNESOTA MEDICAL SCHOOL
Graduated 1976 (50 years in practice)
Group practice Allina Health System — 3867 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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 patients396
Services billed 1,635 a service is one billed item, such as a visit, a test or a procedure
Average patient age70

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.

  • Allina United Hospital Hospital · Saint Paul, MN · listed as United Hospital
  • Allina Health Faribault Medical Center Hospital · Faribault, MN
  • Buffalo Hospital Hospital · Buffalo, MN
  • Cambridge Medical Center Hospital · Cambridge, MN
  • Mercy Hospital Hospital · Coon Rapids, MN

Colleagues at Allina Health System

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 3867 clinicians in the practice; 12 are shown here.

Other providers in Coon Rapids