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TAMARA MARIE GRZESIK LMHC
NPI 1134367147
Counselor - Mental Health in Merrillville, IN

Active since January 29, 2009PECOS EnrolledAccepts Medicare Assignment
1441 E 84TH PL, MERRILLVILLE, IN 46410(219) 794-2000(219) 794-2010 Get Directions Write a Review

NPPES record last updated: February 13, 2013. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Tamara Marie Grzesik Lmhc NPPES

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

TAMARA MARIE GRZESIK LMHC (NPI 1134367147) is an individual mental health provider in Merrillville, Indiana, licensed in Indiana (39002452A) and active in the NPI registry since January 2009. She is enrolled in Medicare PECOS and is a graduate of Other (2008).

NPPES Registry Identity

NPI1134367147
Entity TypeIndividualFemale
Primary Taxonomy101YM0800X
Provider Legal NameTAMARA MARIE GRZESIKCredential: LMHC
Location Address1441 E 84TH PLMerrillville, IN 46410-6451
Mailing Address8400 Louisiana StMerrillville, IN 46410-6385 · (219) 757-1928 · Fax (219) 757-1950
Phone(219) 794-2000
Fax(219) 794-2010
Sole ProprietorNo
Medical School CMSOtherGraduated 2008
Enumeration DateJanuary 29, 2009
Last NPPES UpdateFebruary 13, 2013
✔ NPI 1134367147 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 IN · 39002452A
1441 E 84TH PL, Merrillville, IN 46410
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 and accepts Medicare assignment

Tamara Marie Grzesik Lmhc 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 ID4486002102
PECOS Enrollment IDI20231118000405
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 Tamara Grzesik reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Southlake Community Mental Health Center, Inc
2.2 mi
Rehabilitation, Substance Use Disorder
8555 TAFT ST
Merrillville, IN 46410
  • Reassigned Medicare billing, Indiana enrollment
  • 33 clinicians in this Medicare group
NPI 1366942518 (219) 769-4500

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

Other Providers at the Same Location NPPES 15

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

PROVEDENCIA BLANCHARD MSW
Social Worker
1441 E 84TH PL
MERRILLVILLE, IN 46410
Lake County (219) 794-2000
ROBERT EDWARD RAJEWSKI PSYD HSPP
Psychologist (Clinical)
1441 E 84TH PL
MERRILLVILLE, IN 46410
Lake County (219) 736-9115
MR. JARED EATON PSYD, HSPP
Psychologist (Clinical)
1441 E 84TH PL
MERRILLVILLE, IN 46410
Lake County (219) 736-9115
KRISTEN SALAN MA, LMHC
Counselor (Mental Health)
1441 E 84TH PL
MERRILLVILLE, IN 46410
Lake County (219) 794-2000
DERRICK ALLEN PORTER MSW
Social Worker (Clinical)
1441 E 84TH PL
MERRILLVILLE, IN 46410
Lake County (219) 794-2000
ADAM SCARTOZZI LMHC
Counselor (Mental Health)
1441 E 84TH PL
MERRILLVILLE, IN 46410
Lake County (219) 794-2000
CHRISTINE WILCOX MSW
Social Worker
1441 E 84TH PL
MERRILLVILLE, IN 46410
Lake County (219) 794-2000
DANILA BIKOFF-LEDREW LMHC
Counselor (Mental Health)
1441 E 84TH PL
MERRILLVILLE, IN 46410
Lake County (219) 794-2000

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 Tamara Grzesik's NPI number?

The NPI number for Tamara Grzesik is 1134367147. It was assigned to this individual provider in the NPPES registry on January 29, 2009.

Where is Tamara Grzesik located?

Tamara Grzesik practices at 1441 E 84th Pl, Merrillville, IN 46410. The listed phone number is (219) 794-2000.

What is Tamara Grzesik's specialty?

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

Is Tamara Grzesik enrolled in Medicare?

Yes. Tamara Grzesik 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.

Which organization bills Medicare for Tamara Grzesik's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Tamara Grzesik reassigns Medicare benefits to Southlake Community Mental Health Center, Inc (Merrillville, IN). 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 Tamara Grzesik's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Tamara Grzesik accept?

Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, CareSource and Cigna Healthcare list Tamara Grzesik 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 Tamara Grzesik was last updated on February 13, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.