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Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 90 days.

HEIDI WILLIAMS
NPI 1578475752
Counselor - Mental Health in Marshalltown, IA

Active since September 21, 2026
9 N 4TH AVE, MARSHALLTOWN, IA 50158(641) 751-3581 Get Directions Write a Review

NPPES record added: September 21, 2026. Verified against the NPPES registry weekly; last sync: September 27, 2026.

About Heidi Williams NPPES

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

HEIDI WILLIAMS (NPI 1578475752) is an individual mental health provider in Marshalltown, Iowa, licensed in Iowa (140847) and active in the NPI registry since September 2026.

NPPES Registry Identity

NPI1578475752
Entity TypeIndividualFemale
Primary Taxonomy101YM0800X
Provider Legal NameHEIDI WILLIAMS
Location Address9 N 4TH AVEMarshalltown, IA 50158-1836
Mailing Address1956 Zeller AveMarshalltown, IA 50158-9065 · (641) 751-3581
Phone(641) 751-3581
Sole ProprietorNo
Enumeration DateSeptember 21, 2026
NPPES CertifiedSeptember 21, 2026
✔ NPI 1578475752 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselor · Mental HealthBehavioral Health & Social Service Providers
Taxonomy Code101YM0800X
License✔ Licensed in IA · 140847
9 N 4TH AVE, Marshalltown, IA 50158
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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.

AMY BONIN M.S. - TLMHC
Counselor (Mental Health)
9 N 4TH AVE
MARSHALLTOWN, IA 50158
Marshall County (641) 752-5421
DR. TERRENCE L AUGSPURGER M.D., CHILD PSYCHIAT
Psychiatry & Neurology (Child & Adolescent Psychiatry)
9 N 4TH AVE
MARSHALLTOWN, IA 50158
Marshall County (641) 752-1585
MELINDA TULLIS TCADC
Counselor (Addiction (Substance Use Disorder))
9 N 4TH AVE
MARSHALLTOWN, IA 50158
Marshall County (641) 752-5421
DARCY MAIDEN-PARKS LMSW
Counselor (Addiction (Substance Use Disorder))
9 N 4TH AVE
MARSHALLTOWN, IA 50158
Marshall County (641) 752-5421
ANA MARIA HUERTA LEMUS
Counselor (Addiction (Substance Use Disorder))
9 N 4TH AVE
MARSHALLTOWN, IA 50158
Marshall County (641) 752-5421
MR. LUKE ROBERT HANSEN PSY,D
Psychologist (Cognitive & Behavioral)
9 N 4TH AVE
MARSHALLTOWN, IA 50158
Marshall County (641) 752-1585
TAYLOR HAMMES
Counselor (Addiction (Substance Use Disorder))
9 N 4TH AVE
MARSHALLTOWN, IA 50158
Marshall County (641) 752-5421
JAMES KHILE TLMFT
Marriage & Family Therapist
9 N 4TH AVE
MARSHALLTOWN, IA 50158
Marshall County (641) 752-1585

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 Heidi Williams's NPI number?

The NPI number for Heidi Williams is 1578475752. It was assigned to this individual provider in the NPPES registry on September 21, 2026.

Where is Heidi Williams located?

Heidi Williams practices at 9 N 4th Ave, Marshalltown, IA 50158. The listed phone number is (641) 751-3581.

What is Heidi Williams's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Mental Health, with taxonomy code 101YM0800X.

When was this NPI record last updated?

The NPPES record for Heidi Williams was last updated on September 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.