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

NEPHROLOGY ASSOCIATES PC
NPI 1215981147
Internal Medicine - Nephrology in Sioux Falls, SD

Q: What is Nephrology Associates PC's NPI number?

The NPI number for Nephrology Associates PC is 1215981147. It was assigned to this organization in the NPPES registry on May 22, 2006.

Q: What is Nephrology Associates PC's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Active since May 22, 2006

1905 W 57TH ST STE 1C, SIOUX FALLS, SD 57108(605) 496-7002(877) 543-8251 Get Directions Write a Review

NPPES record last updated: October 2, 2026. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Oct 2, 2026, Jun 29, 2021, Jun 3, 2020 (3 updates tracked since 2020).

On this page

About Nephrology Associates Pc NPPES

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

NEPHROLOGY ASSOCIATES PC (NPI 1215981147) is a healthcare organization registered as a nephrology in Sioux Falls, South Dakota and active in the NPI registry since May 2006. The organization lists Oleg P Georgiev, Provider, as its authorized official.

NPPES Registry Identity

NPI1215981147

Entity TypeOrganization

Primary Taxonomy207RN0300X

Legal Business NameNEPHROLOGY ASSOCIATES PC

Location Address1905 W 57TH ST STE 1CSioux Falls, SD 57108-2893

Mailing AddressPo Box 3471Omaha, NE 68103-0471 · (605) 335-1952 · Fax (605) 373-9971

Phone(605) 496-7002

Fax(877) 543-8251

Organization SubpartNo

Authorized OfficialOleg P GeorgievProvider · (605) 496-7002

Enumeration DateMay 22, 2006

Last NPPES UpdateOctober 2, 20263 updates tracked since enumeration

NPPES CertifiedOctober 2, 2026

✔ NPI 1215981147 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · NephrologyAllopathic & Osteopathic Physicians

Taxonomy Code207RN0300X

Definition

An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.

1905 W 57TH ST STE 1C, Sioux Falls, SD 57108

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Sanford Health Plan.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Nephrology Associates Pc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Nephrology Associates PC, which bills Medicare for the services this clinician delivers.

Clinician (1)

Oleg Georgiev, MD

Nephrology

NPI 1851358600

1905 W 57TH ST STE 1C
Sioux Falls, SD 57108

(605) 496-7002

✔ PECOS✔ Accepts MedicareSame address

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

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 Nephrology Associates PC's NPI number?

The NPI number for Nephrology Associates PC is 1215981147. It was assigned to this organization in the NPPES registry on May 22, 2006.

Where is Nephrology Associates PC located?

Nephrology Associates PC is located at 1905 W 57th St Ste 1C, Sioux Falls, SD 57108. The listed phone number is (605) 496-7002.

What is Nephrology Associates PC's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Is Nephrology Associates PC enrolled in Medicare?

Yes. Nephrology Associates PC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Nephrology Associates PC?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Nephrology) reassigns their Medicare billing to Nephrology Associates PC. A 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 the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does Nephrology Associates PC accept?

Health plans from Sanford Health Plan list Nephrology Associates PC 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 Nephrology Associates PC was last updated on October 2, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 43 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.