Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MR. CHARLES E FLOHR MD
NPI 1306808738
Radiology - Diagnostic Radiology in Sioux Falls, SD

Q: What is Charles Flohr's NPI number?

The NPI number for Charles Flohr is 1306808738. It was assigned to this individual provider in the NPPES registry on April 3, 2006.

Q: What is Charles Flohr's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.

Q: When was this NPI record last updated?

The NPPES record for Charles Flohr was last updated on September 28, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since April 03, 2006PECOS EnrolledAccepts Medicare Assignment

77.99/100

CMS Quality Rating

1210 W 18TH ST, STE LL03, SIOUX FALLS, SD 57104(605) 328-1410(605) 328-1412 Get Directions Write a Review

NPPES record last updated: September 28, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

On this page

About Mr. Charles E Flohr Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MR. CHARLES E FLOHR MD (NPI 1306808738) is an individual diagnostic radiology provider in Sioux Falls, South Dakota, licensed in South Dakota (2551) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS, is affiliated with Sanford Sheldon Medical Center, and is a graduate of University Of Nebraska College Of Medicine (1977).

NPPES Registry Identity

NPI1306808738

Entity TypeIndividualMale

Primary Taxonomy2085R0202X

Provider Legal NameMR. CHARLES E FLOHRCredential: MD

Location Address1210 W 18TH ST, STE LL03Sioux Falls, SD 57104-4647

Mailing AddressPo Box 5074Sioux Falls, SD 57117-5074 · (605) 328-6585 · Fax (605) 328-6512

Phone(605) 328-1410

Fax(605) 328-1412

Sole ProprietorNo

Medical School CMSUniversity Of Nebraska College Of MedicineGraduated 1977

Enumeration DateApril 3, 2006

Last NPPES UpdateSeptember 28, 2026

NPPES CertifiedSeptember 28, 2026

✔ NPI 1306808738 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Diagnostic RadiologyAllopathic & Osteopathic Physicians

Taxonomy Code2085R0202X

License✔ Licensed in SD · 2551

Definition

A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.

1210 W 18TH ST, Sioux Falls, SD 57104

Open in Google Maps ↗

Other Identifiers 1

Medicaid7201054SD

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Insurance Company, Sanford Health Plan, Wellmark Health Plan of Iowa, Inc. and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Mr. Charles E Flohr Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID7719880285

PECOS Enrollment IDI20101020001042, I20140630002077

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Charles Flohr reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Sanford Clinic

Same address

Neuromusculoskeletal Medicine & OMM

1210 W 18TH ST, STE 100
Sioux Falls, SD 57104

Reassigned Medicare billing, Iowa, Minnesota and South Dakota enrollments
59 clinicians in this Medicare group

NPI 1881600286 (605) 312-8500

Sanford Medical Center

0.7 mi

Family Medicine

1420 W 22NDST STE 104
Sioux Falls, SD 57105

Reassigned Medicare billing, South Dakota enrollment
1,097 clinicians in this Medicare group

NPI 1093090342 (605) 328-4897

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 29

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

X-ray of chest, 1 view 71045

A chest X-ray, 1 view, is a quick, painless test that produces images of the structures within your chest, such as your heart, lungs, and blood vessels. It helps in diagnosing conditions like pneumonia, heart problems, or lung cancer. You'll stand in front of a machine that emits X-rays, which pass through your body to create the image.

908 services740 patients

X-ray of chest, 2 views 71046

A chest X-ray, 2 views, is a quick, painless test that creates pictures of the structures inside your chest, such as your heart, lungs, and blood vessels. Two different angles are used to get a comprehensive view. This helps in diagnosing conditions like pneumonia, heart problems, or lung cancer.

884 services841 patients

X-ray of chest, 2 views 71046

442 services424 patients

X-ray of abdomen, 1 view 74018

An X-ray of the abdomen, 1 view, is a quick and painless imaging test. It uses a small amount of radiation to produce images of the structures in your abdomen, such as the stomach, liver, and intestines. This can help identify issues like blockages, infections, or injuries.

314 services219 patients

Imaging for evaluation of swallowing function 74230

This process, known as a swallowing study, uses imaging technology to view how food and liquid move from your mouth to your stomach. It helps identify any issues you may have swallowing, which can be crucial for determining the best treatment plan.

263 services233 patients

Complete ultrasound scan behind abdominal cavity 76770

A complete ultrasound scan behind the abdominal cavity is a non-invasive imaging procedure. It uses sound waves to create pictures of the structures and organs located at the back of your abdomen. It helps in diagnosing health conditions and monitoring ongoing treatments.

262 services255 patients

Ultrasound scan of head and neck soft tissue 76536

An ultrasound scan of the head and neck soft tissue is a non-invasive procedure that uses sound waves to create images of the soft tissues in these areas. It helps identify any abnormalities or issues, such as tumors, cysts, or infections. It's painless and doesn't involve radiation.

225 services222 patients

Limited ultrasound scan of abdomen 76705

A limited ultrasound scan of the abdomen is a non-invasive imaging test. It uses sound waves to produce images of the abdominal organs such as the liver, gallbladder, spleen, pancreas, and kidneys. This helps to identify any abnormalities or issues.

181 services180 patients

Dxa bone density measurement of hip, pelvis, spine 77080

A DXA bone density measurement is a simple, quick, and non-invasive procedure that assesses the strength of your bones. This test uses X-rays to measure the amount of minerals, mainly calcium, in the hip, pelvis, and spine. It helps in early detection of osteoporosis or other bone diseases.

112 services112 patients

X-ray of abdomen, 2 views 74019

An X-ray of the abdomen, 2 views, is a non-invasive imaging test. It uses a small amount of radiation to capture pictures of the structures inside your belly. The two views provide different angles, helping doctors see your organs clearly and detect any issues.

97 services93 patients

X-ray of abdomen, 2 views 74019

81 services80 patients

X-ray of abdomen, 1 view 74018

61 services57 patients

Single contrast x-ray of esophagus 74220

A single contrast x-ray of the esophagus is a non-invasive procedure where a radiopaque substance is swallowed to highlight the esophagus. This allows doctors to capture clear images of the area, aiding in the diagnosis of any abnormalities or issues.

59 services55 patients

Complete ultrasound scan of abdomen 76700

A complete ultrasound scan of the abdomen is a non-invasive imaging procedure. It uses sound waves to produce images of the organs in your abdomen, such as the liver, gallbladder, spleen, pancreas, and kidneys. It helps in diagnosing, monitoring, and planning treatments.

57 services55 patients

Ultrasound scan of head and neck soft tissue 76536

56 services55 patients

Limited ultrasound scan of abdomen 76705

49 services49 patients

Complete ultrasound scan behind abdominal cavity 76770

47 services47 patients

Single contrast x-ray of upper digestive tract 74240

A single contrast x-ray of the upper digestive tract is a diagnostic procedure that uses a special dye and x-rays to see how your digestive system is functioning. It helps in detecting abnormalities or diseases in your esophagus, stomach, and the first part of your small intestine.

42 services41 patients

Complete ultrasound of abdomen and pelvis artery and vein blood flow 93975

This procedure uses sound waves to create images of your abdomen and pelvis, specifically focusing on the arteries and veins. It helps in assessing the blood flow and detecting any abnormalities, ensuring your overall well-being.

30 services30 patients

X-ray of ribs on side of body, minimum of 3 views 71101

This is a diagnostic procedure where a machine emits a small amount of radiation to capture images of your ribs from at least three different angles. It helps to identify issues like fractures or infections. It's a quick, painless process.

26 services25 patients

X-ray of ribs on side of body, minimum of 3 views 71101

24 services24 patients

Ultrasound scan of abdominal aorta 76706

An ultrasound scan of the abdominal aorta is a non-invasive imaging test. It uses sound waves to create pictures of the main blood vessel in your abdomen, the aorta, to check its size and shape. This helps detect any abnormalities or issues early.

24 services24 patients

Ultrasound scan of transplanted kidney 76776

An ultrasound scan of a transplanted kidney is a non-invasive imaging procedure. It uses sound waves to produce images of your kidney, helping to monitor its health and function. This test helps detect any potential issues early, ensuring the kidney is working properly.

24 services18 patients

Ultrasound scan of uterus, ovaries, tubes, cervix and pelvic area through vagina 76830

An ultrasound scan of the lower abdominal region is a safe, non-invasive procedure that uses sound waves to create images of internal structures. This helps in checking the health of reproductive organs and detecting any abnormalities. The scan is done via a small probe inserted into the body.

23 services22 patients

Complete ultrasound scan of pelvis 76856

A complete ultrasound scan of the pelvis is a safe, non-invasive imaging procedure. It uses sound waves to create pictures of your lower abdomen area, helping doctors to evaluate and diagnose any potential issues. It's painless and usually takes about 30 minutes.

23 services22 patients

Limited ultrasound scan behind abdominal cavity 76775

A limited ultrasound scan behind the abdominal cavity is a non-invasive imaging method that helps visualize structures in the back of your abdomen. This procedure uses sound waves to create pictures of these areas, assisting in diagnosing certain conditions.

18 services18 patients

Ultrasound scan of scrotum 76870

An ultrasound scan of the scrotum is a non-invasive imaging test. It uses sound waves to create pictures of the structures within the lower abdominal area. This helps to assess any discomfort or abnormalities you might be experiencing. The procedure is safe and painless.

17 services16 patients

Review by radiologist of bile and/or pancreatic duct image during surgery 74300

This is a procedure where a radiologist examines images of your bile or pancreatic duct during surgery. It helps the surgeon navigate and make precise moves. The images provide real-time insight, ensuring the best possible outcome for your health.

15 services15 patients

Complete ultrasound scan of abdomen 76700

11 services11 patients

Hospital Affiliations CMS Care Compare 5

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Sanford Sheldon Medical Center

Critical Access Hospitals · Sheldon, IA

OwnershipVoluntary non-profit - Private

CMS Certification Number161381

Location118 North 7th AvenueSheldon, IA 51201 · Obrien County

Emergency services

Sanford Worthington Medical Center

Acute Care Hospitals · Worthington, MN

OwnershipVoluntary non-profit - Private

CMS Certification Number240022

Location1018 Sixth Avenue PO Box 997Worthington, MN 56187 · Nobles County

Emergency services Birthing friendly

United Hospital District

Critical Access Hospitals · Blue Earth, MN

OwnershipGovernment - Hospital District or Authority

CMS Certification Number241369

Location515 South Moore StreetBlue Earth, MN 56013 · Faribault County

Emergency services

Sanford Luverne Medical Center

Critical Access Hospitals · Luverne, MN

OwnershipVoluntary non-profit - Private

CMS Certification Number241371

Location1600 N Kniss AvenueLuverne, MN 56156 · Rock County

Emergency services

Sanford Usd Medical Center

Acute Care Hospitals · Sioux Falls, SD

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number430027

Location1305 W 18th St Post Office Box 5039Sioux Falls, SD 57117 · Minnehaha County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 57104 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$85.21 typical visit price

range $55.52 – $167.23

Typical copayment $21.30 (range $13.88 – $41.80)

Most-billed visit code 99203

Established Patient

$69.20 typical visit price

range $18.08 – $137.08

Typical copayment $17.30 (range $4.52 – $34.27)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

77.99/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

80.13

Promoting Interoperability

Improvement Activities

Cost

47.35

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

EUGENIO B MATOS M.D.

Psychiatry & Neurology (Neurology)

1210 W 18TH ST, STE 100
SIOUX FALLS, SD 57104

Minnehaha County (605) 312-8500

DR. KHALIL A YOUSEF M.D.

Radiology (Diagnostic Radiology)

1210 W 18TH ST, STE LL03
SIOUX FALLS, SD 57104

Minnehaha County (605) 328-1410

JOHN ELMER FORRETTE JR. DPM

Podiatrist

1210 W 18TH ST
SIOUX FALLS, SD 57104

Minnehaha County (605) 328-1395

BRETT ALLEN BASTIAN PAC

Physician Assistant

1210 W 18TH ST, STE 104
SIOUX FALLS, SD 57104

Minnehaha County (605) 328-8660

DR. THOMAS MATTHEW BOETEL D.O.

Physical Medicine & Rehabilitation (Pain Medicine)

1210 W 18TH ST, SUITE 100
SIOUX FALLS, SD 57104

Minnehaha County (605) 312-8500

DR. CHRISTOPHER JANSSEN

Physical Medicine & Rehabilitation (Pain Medicine)

1210 W 18TH ST, STE 100
SIOUX FALLS, SD 57104

Minnehaha County (605) 312-8500

DR. ADAM HAILES NICHOLS D.P.M.

Podiatrist (Foot & Ankle Surgery)

1210 W 18TH ST, SUITE G01
SIOUX FALLS, SD 57104

Minnehaha County (605) 328-2663

SHAHAD MURAD NP

Nurse Practitioner

1210 W 18TH ST
SIOUX FALLS, SD 57104

Minnehaha County (605) 328-2663

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Charles Flohr's NPI number?

The NPI number for Charles Flohr is 1306808738. It was assigned to this individual provider in the NPPES registry on April 3, 2006.

Where is Charles Flohr located?

Charles Flohr practices at 1210 W 18th St Ste Ll03, Sioux Falls, SD 57104. The listed phone number is (605) 328-1410.

What is Charles Flohr's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.

Is Charles Flohr enrolled in Medicare?

Yes. Charles Flohr is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Charles Flohr's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Charles Flohr reassigns Medicare benefits to 2 organizations: Sanford Clinic (Sioux Falls, SD) and Sanford Medical Center (Sioux Falls, SD). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Charles Flohr's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Charles Flohr accept?

Health plans from Oscar Insurance Company, Sanford Health Plan, Wellmark Health Plan of Iowa, Inc. and Wellmark of South Dakota, Inc. list Charles Flohr as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Charles Flohr affiliated with any hospitals?

According to CMS data, Charles Flohr is affiliated with Sanford Sheldon Medical Center, Sanford Worthington Medical Center, United Hospital District, Sanford Luverne Medical Center and Sanford Usd Medical Center.

When was this NPI record last updated?

The NPPES record for Charles Flohr was last updated on September 28, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.