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WILLIAM NIEHAUS
NPI 1144328774
Social Worker - Clinical in Greenwood, IN

Active since September 20, 2006PECOS EnrolledAccepts Medicare Assignment
500 POLK ST STE 6G, GREENWOOD, IN 46143(317) 300-4214 Get Directions Write a Review

NPPES record last updated: January 15, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About William Niehaus NPPES

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

WILLIAM NIEHAUS (NPI 1144328774) is an individual clinical provider in Greenwood, Indiana, licensed in Indiana (34008980A) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS and is a graduate of Other (2014).

NPPES Registry Identity

NPI1144328774
Entity TypeIndividualMale
Primary Taxonomy1041C0700X
Provider Legal NameWILLIAM NIEHAUS
Location Address500 POLK ST STE 6GGreenwood, IN 46143-1647
Mailing Address6950 Hillsdale CourtIndpls, IN 46250
Phone(317) 300-4214
Sole ProprietorNo
Medical School CMSOtherGraduated 2014
Enumeration DateSeptember 20, 2006
Last NPPES UpdateJanuary 15, 2025
NPPES CertifiedJanuary 15, 2025
✔ NPI 1144328774 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
License✔ Licensed in IN · 34008980A
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.
500 POLK ST STE 6G, Greenwood, IN 46143
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Other Identifiers 1

Medicaid100270530AIN

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include CareSource, UnitedHealthcare.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

William Niehaus 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 ID1153732565
PECOS Enrollment IDI20230505001498
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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 46143 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 $53.07 – $161.76
Typical copayment $0.00 (range $13.26 – $40.44)
Most-billed visit code NA
Established Patient
$66.48 typical visit price
range $16.93 – $132.22
Typical copayment $16.62 (range $4.23 – $33.05)
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.

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 William Niehaus's NPI number?

The NPI number for William Niehaus is 1144328774. It was assigned to this individual provider in the NPPES registry on September 20, 2006.

Where is William Niehaus located?

William Niehaus practices at 500 Polk St Ste 6G, Greenwood, IN 46143. The listed phone number is (317) 300-4214.

What is William Niehaus's specialty?

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

Is William Niehaus enrolled in Medicare?

Yes. William Niehaus 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.

What insurance does William Niehaus accept?

Health plans from CareSource and UnitedHealthcare list William Niehaus 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 William Niehaus was last updated on January 15, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 months 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.