MAINSTAY CLINICS INC
NPI 1053816405
Clinic/Center - Primary Care in Libertyville, IL
About Mainstay Clinics Inc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MAINSTAY CLINICS INC (NPI 1053816405) is a healthcare organization registered as a primary care in Libertyville, Illinois and active in the NPI registry since March 2018. The organization holds a CLIA Waiver certificate valid through May 24, 2028, maintains a secondary practice location in Mundelein, and lists Alexander Jarosz, Treasurer, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 1
CLIA Laboratory Certificates CMS CLIA
Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.
Certificate of Waiver 14D2149145
Mainstay Clinics Inc · Libertyville, ILOther Providers at the Same Location NPPES 5
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Mainstay Clinics Inc's NPI number?
The NPI number for Mainstay Clinics Inc is 1053816405. It was assigned to this organization in the NPPES registry on March 28, 2018.
Where is Mainstay Clinics Inc located?
Mainstay Clinics Inc is located at 333 Peterson Rd Ste 240, Libertyville, IL 60048. The listed phone number is (224) 864-2124.
What is Mainstay Clinics Inc's specialty?
The primary specialty registered for this NPI is Clinic/Center, specializing in Primary Care, with taxonomy code 261QP2300X.
Does Mainstay Clinics Inc hold a CLIA laboratory certificate?
Yes. A Certificate of Waiver (number 14D2149145) is associated with this NPI, valid through May 24, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.
When was this NPI record last updated?
The NPPES record for Mainstay Clinics Inc was last updated on April 3, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 months 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.
