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STEPHEN ERROL NANTON M.D.
NPI 1770559007
Pediatrics - Pediatric Gastroenterology in Sioux Falls, SD

Active since February 27, 2006PECOS Enrolled
1417 S. CLIFF AVE, STE 100, SIOUX FALLS, SD 57105(605) 322-3666(605) 322-3665 Get Directions Write a Review

NPPES record last updated: October 16, 2018. Verified against the NPPES registry weekly; last sync: November 08, 2026.

About Stephen Errol Nanton M.d. NPPES

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

STEPHEN ERROL NANTON M.D. (NPI 1770559007) is an individual pediatric gastroenterology provider in Sioux Falls, South Dakota, licensed in South Dakota (5614) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1770559007
Entity TypeIndividualMale
Primary Taxonomy2080P0206X
Provider Legal NameSTEPHEN ERROL NANTONCredential: M.D.
Location Address1417 S. CLIFF AVE, STE 100Sioux Falls, SD 57105-1014
Mailing AddressPo Box 86370Sioux Falls, SD 57118-6370 · (605) 322-7510 · Fax (605) 322-6475
Phone(605) 322-3666
Fax(605) 322-3665
Sole ProprietorNo
Enumeration DateFebruary 27, 2006
Last NPPES UpdateOctober 16, 2018
✔ NPI 1770559007 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatrics · Pediatric GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code2080P0206X
License✔ Licensed in SD · 5614
Definition
A pediatrician who specializes in the diagnosis and treatment of diseases of the digestive systems of infants, children and adolescents. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using lighted scopes to see internal organs.
1417 S. CLIFF AVE, Sioux Falls, SD 57105
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Other Identifiers 18

Other57105I013SD · Wps Tricare
Medicaid13414ND
Medicaid46022474339NE
Other5614SD · Dakotacare
Medicaid737691000MN
Other207P5NAMN · Blue Cross
Other722801045254SD · Preferred One
OtherHP55700SD · Healthpartners
Other1203389SD · Medica
Other2385646SD · Araz/ America's Ppo
Medicaid0594416IA
Other45375SD · Sanford Health Plan
Other207P5NAMN · Cc Systems/ Blue Plus
Other247937SD · Midlands Choice
Medicaid6005150SD
Other370624200MN · Primewest
Other4994658SD · Blue Cross
Other370624200SD · Dept Of Labor

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Sunflower Health Plan, Ambetter Health, Avera Health Plans 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 (PECOS)

Stephen Errol Nanton M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Reassignment

Medicare enrollment records show Stephen Nanton reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Avera Mckennan
Same address
Maternal & Fetal Medicine
1417 S. CLIFF AVE., STE. 100
Sioux Falls, SD 57105
  • Reassigned Medicare billing, South Dakota enrollment
  • 1,277 clinicians in this Medicare group
NPI 1205808748 (605) 322-8937

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 57105 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
$126.78 typical visit price
range $55.52 – $167.23
Typical copayment $31.69 (range $13.88 – $41.80)
Most-billed visit code 99204
Established Patient
$97.88 typical visit price
range $18.08 – $137.08
Typical copayment $24.47 (range $4.52 – $34.27)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 5

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

LAURA ANN HUA CNP
Nurse Practitioner (Family)
1417 S. CLIFF AVE, SUITE 010 PLAZA 1
SIOUX FALLS, SD 57105
Minnehaha County (605) 322-5437
ASHUTOSH GUPTA M.D.
Pediatrics (Pediatric Endocrinology)
1417 S. CLIFF AVE, STE 010
SIOUX FALLS, SD 57105
Minnehaha County (605) 322-3666
BRENDA KAY KALLEMEYN MD
Obstetrics & Gynecology
1417 S. CLIFF AVE, STE 200
SIOUX FALLS, SD 57105
Minnehaha County (605) 322-6675
SAMI M AWADALLAH M.D.
Pediatrics (Pediatric Cardiology)
1417 S. CLIFF AVE, STE. 010
SIOUX FALLS, SD 57105
Minnehaha County (605) 322-3666
WILFREDO G VELOIRA JR. M.D.
Pediatrics (Pediatric Pulmonology)
1417 S. CLIFF AVE, STE, 010
SIOUX FALLS, SD 57105
Minnehaha County (605) 322-3666

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 Stephen Nanton's NPI number?

The NPI number for Stephen Nanton is 1770559007. It was assigned to this individual provider in the NPPES registry on February 27, 2006.

Where is Stephen Nanton located?

Stephen Nanton practices at 1417 S. Cliff Ave Ste 100, Sioux Falls, SD 57105. The listed phone number is (605) 322-3666.

What is Stephen Nanton's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Gastroenterology, with taxonomy code 2080P0206X.

Is Stephen Nanton enrolled in Medicare?

Yes. Stephen Nanton is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Stephen Nanton's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Stephen Nanton reassigns Medicare benefits to Avera Mckennan (Sioux Falls, SD). The 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 Stephen Nanton's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Stephen Nanton accept?

Health plans from Ambetter Health, Ambetter from Sunflower Health Plan, Avera Health Plans, Medica and Wellmark Health Plan of Iowa, Inc. and 1 other insurer list Stephen Nanton 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.

When was this NPI record last updated?

The NPPES record for Stephen Nanton was last updated on October 16, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 years 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.