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OLIVIA HANSEN GRATZ PHD
NPI 1992255103
Psychologist - Clinical in Grand Rapids, MI

Active since October 12, 2016PECOS Enrolled
35 MICHIGAN ST NE STE 5201, GRAND RAPIDS, MI 49503(616) 267-2830 Get Directions Write a Review

NPPES record last updated: September 27, 2022. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Sep 27, 2022, Aug 9, 2022, Oct 12, 2016 (3 updates tracked since 2016).

About Olivia Hansen Gratz Phd NPPES

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

OLIVIA HANSEN GRATZ PHD (NPI 1992255103) is an individual clinical provider in Grand Rapids, Michigan, licensed in Michigan (6301019185) and active in the NPI registry since October 2016. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1992255103
Entity TypeIndividualFemale
Primary Taxonomy103TC0700X
Provider Legal NameOLIVIA HANSEN GRATZCredential: PHD
Location Address35 MICHIGAN ST NE STE 5201Grand Rapids, MI 49503-2530
Mailing Address100 Michigan St Ne # Mc845Grand Rapids, MI 49503-2560
Phone(616) 267-2830
Sole ProprietorNo
Enumeration DateOctober 12, 2016
Last NPPES UpdateSeptember 27, 20223 updates tracked since enumeration
NPPES CertifiedSeptember 27, 2022
✔ NPI 1992255103 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 · 6301019185
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.
35 MICHIGAN ST NE STE 5201, Grand Rapids, MI 49503
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter from Meridian, Ambetter Health and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Olivia Hansen Gratz Phd is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Reassignment

Medicare enrollment records show Olivia Gratz reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Spectrum Health Primary Care Partners
Same address
Pediatric Endocrinology
35 MICHIGAN ST NE STE 1800
Grand Rapids, MI 49503
  • Reassigned Medicare billing, Michigan enrollment
  • 2,446 clinicians in this Medicare group
NPI 1326599671 (616) 391-3933

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 49503 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
$166.68 typical visit price
range $54.34 – $166.68
Typical copayment $41.67 (range $13.58 – $41.67)
Most-billed visit code 99205
Established Patient
$96.44 typical visit price
range $17.09 – $135.40
Typical copayment $24.11 (range $4.27 – $33.85)
Most-billed visit code 99214
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. AMY E PUGH PSYD
Psychologist (Clinical Child & Adolescent)
35 MICHIGAN ST NE STE 5201
GRAND RAPIDS, MI 49503
Kent County (616) 267-2830
JESSICA LINDERMAN
Social Worker
35 MICHIGAN ST NE STE 5201
GRAND RAPIDS, MI 49503
Kent County (616) 267-2830
DR. THOMAS ANTHONY DUDA PH.D., ABPP-CN
Clinical Neuropsychologist
35 MICHIGAN ST NE STE 5201
GRAND RAPIDS, MI 49503
Kent County (616) 267-2500
JENNA KRISTINE SCHWARTZ PHD, MA, LP, NCSP
Psychologist (Clinical)
35 MICHIGAN ST NE STE 5201
GRAND RAPIDS, MI 49503
Kent County (616) 267-2500
DR. JASON PETER THOMAS M.D.
Pediatrics (Pediatric Nephrology)
35 MICHIGAN ST NE STE 5201
GRAND RAPIDS, MI 49503
Kent County (616) 267-2400
LARA DE STEFANO MD
Psychiatry & Neurology (Psychiatry)
35 MICHIGAN ST NE STE 5201
GRAND RAPIDS, MI 49503
Kent County (616) 267-2830
SARAH LYN SPENCER MS, RDN
Dietitian, Registered
35 MICHIGAN ST NE STE 5201
GRAND RAPIDS, MI 49503
Kent County (616) 267-2400
CAROLINE GONYNOR PHD, MPH
Psychologist (Clinical)
35 MICHIGAN ST NE STE 5201
GRAND RAPIDS, MI 49503
Kent County (616) 267-2830

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 Olivia Gratz's NPI number?

The NPI number for Olivia Gratz is 1992255103. It was assigned to this individual provider in the NPPES registry on October 12, 2016.

Where is Olivia Gratz located?

Olivia Gratz practices at 35 Michigan St NE Ste 5201, Grand Rapids, MI 49503. The listed phone number is (616) 267-2830.

What is Olivia Gratz's specialty?

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

Is Olivia Gratz enrolled in Medicare?

Yes. Olivia Gratz is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Olivia Gratz's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Olivia Gratz reassigns Medicare benefits to Spectrum Health Primary Care Partners (Grand Rapids, MI). The 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 Olivia Gratz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Olivia Gratz 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 1 other insurer list Olivia Gratz 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 Olivia Gratz was last updated on September 27, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.