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JOSEPH MATTHEW NIXON
NPI 1811336845
Social Worker - Clinical in Des Moines, IA

Active since June 24, 2013PECOS EnrolledAccepts Medicare Assignment
600 42ND ST, DES MOINES, IA 50312(515) 255-8399 Get Directions Write a Review

NPPES record last updated: June 24, 2013. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Joseph Matthew Nixon NPPES

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

JOSEPH MATTHEW NIXON (NPI 1811336845) is an individual clinical provider in Des Moines, Iowa, licensed in Iowa (008221) and active in the NPI registry since June 2013. He is enrolled in Medicare PECOS and is a graduate of Other (2013).

NPPES Registry Identity

NPI1811336845
Entity TypeIndividualMale
Primary Taxonomy1041C0700X
Provider Legal NameJOSEPH MATTHEW NIXON
Location Address600 42ND STDes Moines, IA 50312
Mailing Address600 42nd StDes Moines, IA 50312-2701 · (515) 283-9999
Phone(515) 255-8399
Sole ProprietorNo
Medical School CMSOtherGraduated 2013
Enumeration DateJune 24, 2013
✔ NPI 1811336845 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 IA · 008221
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.
600 42ND ST, Des Moines, IA 50312
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Wellmark Health Plan of Iowa, Inc..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

Joseph Matthew Nixon 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 ID3476823329
PECOS Enrollment IDI20170725003596
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

2

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

Stepping Stone Family Services Inc.
2.1 mi
Mental Health
1308 8TH ST, SUITE 5
West Des Moines, IA 50265
  • Reassigned Medicare billing, Iowa enrollment
  • 3 clinicians in this Medicare group
NPI 1447585377 (515) 276-6338
Nixon Psychotherapy LLC
2.1 mi
Clinical
939 OFFICE PARK RD STE 316
West Des Moines, IA 50265
  • Reassigned Medicare billing, Iowa enrollment
NPI 1407774177 (515) 679-5850

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 50312 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 $52.96 – $161.40
Typical copayment $0.00 (range $13.24 – $40.35)
Most-billed visit code NA
Established Patient
$66.36 typical visit price
range $16.91 – $131.98
Typical copayment $16.59 (range $4.22 – $32.99)
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.

MRS. JESSICA ANN PILLING L.M.H.C.
Counselor (Mental Health)
600 42ND ST
DES MOINES, IA 50312
Polk County (515) 255-8399
ANNIE LEE KRAMER T-LMHC
Counselor (Mental Health)
600 42ND ST
DES MOINES, IA 50312
Polk County (515) 255-8399
MOLLY KHANG LMHC
Counselor (Mental Health)
600 42ND ST
DES MOINES, IA 50312
Polk County (515) 255-8399
STEPHANIE FULLER LMSW
Social Worker (Clinical)
600 42ND ST
DES MOINES, IA 50312
Polk County (515) 255-8399
JILL LAWRENCE MSW, LISW
Social Worker (Clinical)
600 42ND ST
DES MOINES, IA 50312
Polk County (515) 255-8399
SHIDONNA STEEN
Social Worker (Clinical)
600 42ND ST
DES MOINES, IA 50312
Polk County (515) 255-8399
MRS. ANGELA DAWN PORATH MS, LMHC, CADC
Counselor (Mental Health)
600 42ND ST
DES MOINES, IA 50312
Polk County (515) 255-8399
ALMA HENRY LMSW
Social Worker
600 42ND ST
DES MOINES, IA 50312
Polk County (515) 255-8399

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 Joseph Nixon's NPI number?

The NPI number for Joseph Nixon is 1811336845. It was assigned to this individual provider in the NPPES registry on June 24, 2013.

Where is Joseph Nixon located?

Joseph Nixon practices at 600 42nd St, Des Moines, IA 50312. The listed phone number is (515) 255-8399.

What is Joseph Nixon's specialty?

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

Is Joseph Nixon enrolled in Medicare?

Yes. Joseph Nixon 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 Joseph Nixon's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Joseph Nixon reassigns Medicare benefits to 2 organizations: Stepping Stone Family Services Inc. (West Des Moines, IA) and Nixon Psychotherapy LLC (West Des Moines, IA). 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 Joseph Nixon's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Joseph Nixon accept?

Health plans from Wellmark Health Plan of Iowa, Inc. list Joseph Nixon 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 Joseph Nixon was last updated on June 24, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.