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

Mr. Charles E Flohr, MD

Individual provider Diagnostic Radiology Physician · NPI 1306808738

Mr. Charles E Flohr, MD practises Diagnostic Radiology in Sioux Falls, South Dakota. Graduated from University of Nebraska College of Medicine in 1977, 49 years ago. Practices with Sanford Clinic, a 273-clinician group and accepts Medicare assignment. Licensed in South Dakota.

Years since qualifying
49
Trained at
University of Nebraska College of Medicine
Licensed in
SD
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

1210 W 18th St Ste LL03
Sioux Falls, SD 57104-4647
Phone: (605) 328-1410
Fax: (605) 328-1412
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X · Licence 2551 (SD)

Record details

NPI number1306808738
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 3, 2006
Last updated in NPPESSeptember 28, 2026
Certification dateSeptember 28, 2026

Medicare enrollment

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

Medicare specialtyDIAGNOSTIC RADIOLOGY
Medical schoolUNIVERSITY OF NEBRASKA COLLEGE OF MEDICINE
Graduated 1977 (49 years in practice)
Group practice Sanford Clinic — 273 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

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 patients3,438
Services billed 4,515 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

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.

  • Sanford Usd Medical Center Hospital · Sioux Falls, SD · listed as Sanford Medical Center Pharmacy
  • United Hospital District Hospital · Blue Earth, MN · listed as United Hospital District Inc
  • Sanford Luverne Medical Center Hospital · Luverne, MN
  • Sanford Sheldon Medical Center Hospital · Sheldon, IA
  • Sanford Worthington Medical Center Hospital · Worthington, MN

Colleagues at Sanford Clinic

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 273 clinicians in the practice; 12 are shown here.

Other providers in Sioux Falls