Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Charles E Flohr, MD

Diagnostic Radiology Physician in Sioux Falls, SD · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1306808738

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Registry record

Entity type Individual (Type 1)

Name Mr. Charles E Flohr

Credential MD

Sex Male

Practice address 1210 W 18th St, Ste Ll03, Sioux Falls, SD, 57104

Phone (605) 328-1410

Fax (605) 328-1412

Enumeration date Apr 3, 2006

Last updated in NPPES Mar 25, 2022

Taxonomy & licenses

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 2551 (SD) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
7201054	Medicaid	SD	-

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Charles Flohr?

The National Provider Identifier (NPI) for Charles Flohr is 1306808738, a Type 1 (individual) record in the CMS NPPES registry.

Where does Charles Flohr practice?

The practice location on file with NPPES is in Sioux Falls, SD. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-03-25.