MARY HOLWERDA
NPI 1114597580
Counselor - Professional in Grand Haven, MI

Active since June 29, 2021PECOS EnrolledAccepts Medicare Assignment
320 COLUMBUS AVE, GRAND HAVEN, MI 49417(616) 607-4476 Get Directions Write a Review

NPPES record last updated: June 29, 2021. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Mary Holwerda NPPES

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

MARY HOLWERDA (NPI 1114597580) is an individual professional provider in Grand Haven, Michigan, licensed in (6401009154) and active in the NPI registry since June 2021. She is enrolled in Medicare PECOS and is a graduate of Other (2003).

NPPES Registry Identity

NPI1114597580
Entity TypeIndividualFemale
Primary Taxonomy101YP2500X
Provider Legal NameMARY HOLWERDA
Location Address320 COLUMBUS AVEGrand Haven, MI 49417-1289
Mailing Address320 Columbus AveGrand Haven, MI 49417-1289 · (616) 607-4476
Sole ProprietorNo
Medical School CMSOtherGraduated 2003
Enumeration DateJune 29, 2021
NPPES CertifiedJune 29, 2021
NPI 1114597580 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyCounselor · ProfessionalBehavioral Health & Social Service Providers
Taxonomy Code101YP2500X
License Licensed · 6401009154
320 COLUMBUS AVE, Grand Haven, MI 49417

Other Names 1

Former Name (1)Mary Slotman

Accepted 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

Mary Holwerda 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 ID5991148231
PECOS Enrollment IDI20240203000363
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.

Other Providers at the Same Location NPPES 5

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Social Worker (Clinical)
320 COLUMBUS AVE
GRAND HAVEN, MI 49417
Psychologist (Clinical)
320 COLUMBUS AVE
GRAND HAVEN, MI 49417
Counselor (Mental Health)
320 COLUMBUS AVE
GRAND HAVEN, MI 49417
Counselor (Professional)
320 COLUMBUS AVE
GRAND HAVEN, MI 49417
Psychologist (Clinical)
320 COLUMBUS AVE
GRAND HAVEN, MI 49417

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 Mary Holwerda's NPI number?

The NPI number for Mary Holwerda is 1114597580. It was assigned to this individual provider in the NPPES registry on June 29, 2021. The provider is also known as Mary Slotman.

Where is Mary Holwerda located?

Mary Holwerda practices at 320 Columbus Ave, Grand Haven, MI 49417. The listed phone number is (616) 607-4476.

What is Mary Holwerda's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Professional, with taxonomy code 101YP2500X.

Is Mary Holwerda enrolled in Medicare?

Yes. Mary Holwerda 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 Mary Holwerda accept?

Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Blue Care Network of Michigan and Blue Cross Blue Shield of Michigan Mutual Insurance Company and 3 other insurers list Mary Holwerda 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 Mary Holwerda was last updated on June 29, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.