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

MR. DENNIS FRANK HEINONEN LMSW
NPI 1710921820
Social Worker - Clinical in Allegan, MI

Active since June 16, 2006
C/O ACCMHS, PO DRAWER 130, ALLEGAN, MI 49010(269) 673-6617(269) 673-2738 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Mr. Dennis Frank Heinonen Lmsw NPPES

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

MR. DENNIS FRANK HEINONEN LMSW (NPI 1710921820) is an individual clinical provider in Allegan, Michigan, licensed in Michigan (6801065093) and active in the NPI registry since June 2006.

NPPES Registry Identity

NPI1710921820
Entity TypeIndividualMale
Primary Taxonomy1041C0700X
Provider Legal NameMR. DENNIS FRANK HEINONENCredential: LMSW
Location AddressC/O ACCMHS, PO DRAWER 130Allegan, MI 49010-0130
Mailing AddressC/o Accmhs, Po Drawer 130Allegan, MI 49010-0130 · (269) 673-6617 · Fax (269) 673-2738
Fax(269) 673-2738
Sole ProprietorNo
Enumeration DateJune 16, 2006
Last NPPES UpdateJuly 13, 2026
NPI 1710921820 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 MI · 6801065093
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.
C/O ACCMHS, Allegan, MI 49010

Accepted Insurance

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 Dennis Heinonen's NPI number?

The NPI number for Dennis Heinonen is 1710921820. It was assigned to this individual provider in the NPPES registry on June 16, 2006.

Where is Dennis Heinonen located?

Dennis Heinonen practices at C/O Accmhs PO Drawer 130, Allegan, MI 49010. The listed phone number is (269) 673-6617.

What is Dennis Heinonen's specialty?

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

What insurance does Dennis Heinonen accept?

Health plans from Oscar Insurance Company and Priority Health list Dennis Heinonen 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 Dennis Heinonen was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 27 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.