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

ASHLEY NIERMAN CSW
NPI 1285592923
Social Worker - Clinical in Sioux Falls, SD

Q: What is Ashley Nierman's NPI number?

The NPI number for Ashley Nierman is 1285592923. It was assigned to this individual provider in the NPPES registry on January 12, 2026. The provider is also known as Ashley Blocker.

Q: What is Ashley Nierman's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.

Q: When was this NPI record last updated?

The NPPES record for Ashley Nierman 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 40 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 January 12, 2026PECOS EnrolledAccepts Medicare Assignment

1321 W 22ND ST, SIOUX FALLS, SD 57105(605) 312-5350 Get Directions Write a Review

NPPES record last updated: September 28, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Sep 28, 2026, May 15, 2026, Jan 12, 2026 (3 updates tracked since 2026).

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About Ashley Nierman Csw NPPES

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

ASHLEY NIERMAN CSW (NPI 1285592923) is an individual clinical provider in Sioux Falls, South Dakota, licensed in South Dakota (6877) and active in the NPI registry since January 2026. She is enrolled in Medicare PECOS and is a graduate of Other (2025).

NPPES Registry Identity

NPI1285592923

Entity TypeIndividualFemale

Primary Taxonomy1041C0700X

Provider Legal NameASHLEY NIERMANCredential: CSW

Location Address1321 W 22ND STSioux Falls, SD 57105-1502

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

Phone(605) 312-5350

Sole ProprietorNo

Medical School CMSOtherGraduated 2025

Enumeration DateJanuary 12, 2026

Last NPPES UpdateSeptember 28, 20263 updates tracked since enumeration

NPPES CertifiedSeptember 28, 2026

✔ NPI 1285592923 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers

Taxonomy Code1041C0700X

License✔ Licensed in SD · 6877

Definition

A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.

Also ListedCounselorTaxonomy 101Y00000X · License 6877 (SD)

1321 W 22ND ST, Sioux Falls, SD 57105

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Other Names 1

Former Name (1)Ashley Blocker

Accepted Insurance

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

Ashley Nierman Csw 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 ID9931689981

PECOS Enrollment IDI20260218000417

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 Ashley Nierman 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

Clinical Medical Laboratory

1321 W 22ND ST
Sioux Falls, SD 57105

Reassigned Medicare billing, South Dakota enrollment
826 clinicians in this Medicare group

NPI 1346410115 (605) 404-4212

Sanford Medical Center

0.2 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.

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

$0.00 typical visit price

range $55.52 – $167.23

Typical copayment $0.00 (range $13.88 – $41.80)

Most-billed visit code NA

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.

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.

HALEY ASHLYN GALLMAN

Dietitian, Registered