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

MARIANA TSIGISTRAS
NPI 1790338622
Social Worker in Aurora, IL

Active since July 19, 2019PECOS Enrolled
70 S RIVER ST, AURORA, IL 60506(630) 844-2662(630) 844-3084 Get Directions Write a Review

NPPES record last updated: September 29, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 29, 2026, Nov 5, 2025, May 9, 2025 and 3 more (6 updates tracked since 2019).

About Mariana Tsigistras NPPES

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

MARIANA TSIGISTRAS (NPI 1790338622) is an individual social worker in Aurora, Illinois, licensed in Illinois (150112860) and active in the NPI registry since July 2019. She is enrolled in Medicare PECOS, maintains a secondary practice location in Clarendon Hills, and is a graduate of Other (2021).

NPPES Registry Identity

NPI1790338622
Entity TypeIndividualFemale
Primary Taxonomy104100000X
Provider Legal NameMARIANA TSIGISTRAS
Location Address70 S RIVER STAurora, IL 60506-5185
Mailing Address434 Mcdaniels Cir Unit 301Clarendon Hills, IL 60514-2157 · (773) 896-3459
Phone(630) 844-2662
Fax(630) 844-3084
Sole ProprietorYes
Medical School CMSOtherGraduated 2021
Enumeration DateJuly 19, 2019
Last NPPES UpdateSeptember 29, 20266 updates tracked since enumeration
NPPES CertifiedNovember 5, 2025
✔ NPI 1790338622 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtySocial WorkerBehavioral Health & Social Service Providers
Taxonomy Code104100000X
License✔ Licensed in IL · 150112860
Definition
A social worker is a person who is qualified by a Social Work degree, and licensed, certified or registered by the state as a social worker to practice within the scope of that license. A social worker provides assistance and counseling to clients and their families who are dealing with social, emotional and environmental problems. Social work services may be rendered to individuals, families, groups, and the public.
Also ListedSocial Worker · SchoolTaxonomy 1041S0200X
70 S RIVER ST, Aurora, IL 60506
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Secondary Practice Location 1

Location 1434 McDaniels Cir Unit 301Clarendon Hills, IL 60514-2157 · Phone (773) 896-3459

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mariana Tsigistras is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID5193294775
PECOS Enrollment IDI20260513000127
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 Mariana Tsigistras reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Family Counseling Service Of Aurora
Same address
Mental Health (Including Community Mental Health Center)
70 S. RIVER ST.
Aurora, IL 60506
  • Reassigned Medicare billing, Illinois enrollment
  • 24 clinicians in this Medicare group
NPI 1063591303 (630) 844-2662

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 20

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

GISELLE NAVARRO
Social Worker
70 S RIVER ST
AURORA, IL 60506
Kane County (630) 844-2662
ANITA KOZAK
Psychologist
70 S RIVER ST
AURORA, IL 60506
Kane County (630) 844-2662
KAYLA SRINIVAS RAO
Counselor (Mental Health)
70 S RIVER ST
AURORA, IL 60506
Kane County (630) 844-2662
MAEGAN WASHINGTON MHP
Counselor (Mental Health)
70 S RIVER ST
AURORA, IL 60506
Kane County (630) 844-2662
BENJAMIN ELLIS
Counselor (Mental Health)
70 S RIVER ST
AURORA, IL 60506
Kane County (630) 844-2662
ANTHONY MONROE WILSON
Marriage & Family Therapist
70 S RIVER ST
AURORA, IL 60506
Kane County (630) 844-2662
SARAH HATTEN
Counselor (Mental Health)
70 S RIVER ST
AURORA, IL 60506
Kane County (630) 844-2662
KIMBER LUBERT
Social Worker
70 S RIVER ST
AURORA, IL 60506
Kane County (630) 844-2662

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 Mariana Tsigistras's NPI number?

The NPI number for Mariana Tsigistras is 1790338622. It was assigned to this individual provider in the NPPES registry on July 19, 2019.

Where is Mariana Tsigistras located?

Mariana Tsigistras practices at 70 S River St, Aurora, IL 60506. The listed phone number is (630) 844-2662.

What is Mariana Tsigistras's specialty?

The primary specialty registered for this NPI is Social Worker with taxonomy code 104100000X.

Is Mariana Tsigistras enrolled in Medicare?

Yes. Mariana Tsigistras is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Mariana Tsigistras's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mariana Tsigistras reassigns Medicare benefits to Family Counseling Service Of Aurora (Aurora, IL). 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 Mariana Tsigistras's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Mariana Tsigistras was last updated on September 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 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.