GIANNASI MENTAL HEALTH COUNSELORS LIMITED
NPI 1790109726
Counselor - Mental Health in Downers Grove, IL
About Giannasi Mental Health Counselors Limited NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GIANNASI MENTAL HEALTH COUNSELORS LIMITED (NPI 1790109726) is a healthcare organization registered as a mental health in Downers Grove, Illinois and active in the NPI registry since February 2014. The organization lists Robert N Giannasi, President, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Giannasi Mental Health Counselors Limited 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 Giannasi Mental Health Counselors Limited, which bills Medicare for the services this clinician delivers.
Clinician (1)
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 Giannasi Mental Health Counselors Limited's NPI number?
The NPI number for Giannasi Mental Health Counselors Limited is 1790109726. It was assigned to this organization in the NPPES registry on February 11, 2014.
Where is Giannasi Mental Health Counselors Limited located?
Giannasi Mental Health Counselors Limited is located at 1000 Maple Ave, Downers Grove, IL 60515. The listed phone number is (847) 989-2546.
What is Giannasi Mental Health Counselors Limited's specialty?
The primary specialty registered for this NPI is Counselor, specializing in Mental Health, with taxonomy code 101YM0800X.
Is Giannasi Mental Health Counselors Limited enrolled in Medicare?
Yes. Giannasi Mental Health Counselors Limited is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Giannasi Mental Health Counselors Limited?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Mental Health Counselor) reassigns their Medicare billing to Giannasi Mental Health Counselors Limited. 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 Giannasi Mental Health Counselors Limited was last updated on February 11, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.
# Giannasi Mental Health Counselors Limited · NPI 1790109726
Mental Health organization in Downers Grove, Illinois. Organization record, active in the CMS NPPES registry since February 11, 2014.
## Identity
- **NPI:** 1790109726 (Entity type: Organization)
- **Enumerated:** February 11, 2014
- **Primary specialty:** Counselor - Mental Health · taxonomy 101YM0800X
- **Organization subpart:** No
- **Authorized official:** Robert Giannasi, PRESIDENT
## Practice location
- **Address:** 1000 MAPLE AVE, Downers Grove, IL 60515-4965
- **Phone:** (847) 989-2546
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 1 clinician (Mental Health Counselor) reassigns Medicare billing to this organization (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** February 11, 2014
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Source: [NPI Profile](https://npiprofile.com/npi/1790109726) · Data from the CMS NPPES public registry.