STEVEN G. HAMMING, PSY.D., PC
NPI 1386774396
Psychologist - Clinical in Grand Rapids, MI

Q: What is Steven G. Hamming, Psy.D., PC's NPI number?

The NPI number for Steven G. Hamming, Psy.D., PC is 1386774396. It was assigned to this organization in the NPPES registry on March 7, 2007.

Q: What is Steven G. Hamming, Psy.D., PC's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

Active since March 07, 2007

146 MONROE CENTER ST NW, SUITE 606, GRAND RAPIDS, MI 49503(616) 459-0000(616) 459-0000 Get Directions Write a Review

NPPES record last updated: July 9, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jul 9, 2025, Aug 22, 2020 (2 updates tracked since 2020).

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About Steven G. Hamming, Psy.d., Pc NPPES

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

STEVEN G. HAMMING, PSY.D., PC (NPI 1386774396) is a healthcare organization registered as a clinical in Grand Rapids, Michigan and active in the NPI registry since March 2007. The organization lists Steven Gene Hamming, President, as its authorized official.

NPPES Registry Identity

NPI1386774396

Entity TypeOrganization

Primary Taxonomy103TC0700X

Legal Business NameSTEVEN G. HAMMING, PSY.D., PC

Location Address146 MONROE CENTER ST NW, SUITE 606Grand Rapids, MI 49503-2833

Mailing Address146 Monroe Center, Suite 606Grand Rapids, MI 49503-2815 · (616) 459-0000 · Fax (616) 459-0000

Phone(616) 459-0000

Fax(616) 459-0000

Organization SubpartNo

Authorized OfficialSteven Gene HammingPresident · (616) 459-0000

Enumeration DateMarch 7, 2007

Last NPPES UpdateJuly 9, 20252 updates tracked since enumeration

NPPES CertifiedJuly 9, 2025

✔ NPI 1386774396 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers

Taxonomy Code103TC0700X

License✔ Licensed in MI · 6301008656

Definition

A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems.

146 MONROE CENTER ST NW, Grand Rapids, MI 49503

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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Steven G. Hamming, Psy.d., Pc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Steven G. Hamming, Psy.D., PC, which bills Medicare for the services this clinician delivers.

Clinician (1)

Steven Hamming, PSY.D.

Clinical Psychologist

NPI 1295883213

146 MONROE CENTER ST NW SUITE 606
Grand Rapids, MI 49503

(616) 459-0000

✔ PECOS✔ Accepts MedicareSame address

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 Steven G. Hamming, Psy.D., PC's NPI number?

The NPI number for Steven G. Hamming, Psy.D., PC is 1386774396. It was assigned to this organization in the NPPES registry on March 7, 2007.

Where is Steven G. Hamming, Psy.D., PC located?

Steven G. Hamming, Psy.D., PC is located at 146 Monroe Center St NW Suite 606, Grand Rapids, MI 49503. The listed phone number is (616) 459-0000.

What is Steven G. Hamming, Psy.D., PC's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

Is Steven G. Hamming, Psy.D., PC enrolled in Medicare?

Yes. Steven G. Hamming, Psy.D., PC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Steven G. Hamming, Psy.D., PC?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Clinical Psychologist) reassigns their Medicare billing to Steven G. Hamming, Psy.D., PC. A 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 the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Steven G. Hamming, Psy.D., PC was last updated on July 9, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.