Mainstay Clinics Inc - Primary Care in Libertyville, IL

Mainstay Clinics Inc is a primary clinic (Clinic/center - Primary Care) in Libertyville, Illinois. The current practice location for Mainstay Clinics Inc is 333 Peterson Rd Ste 240, Libertyville, Illinois. For appointments, you can reach them via phone at (224) 864-2124. The mailing address for Mainstay Clinics Inc is 17942 W Pond Ridge Cir, Gurnee, Illinois and phone number is (224) 303-4138.

Mainstay Clinics Inc is licensed to practice in * (Not Available) (license number ) and its NPI number is 1053816405. This medical practice does not participate in medicare program and thus may not accept your medicare insurance. You may check if they accept your insurance at (224) 864-2124.

Contact Information

Mainstay Clinics Inc
333 Peterson Rd Ste 240
Libertyville
IL 60048-1085
(224) 864-2124
(224) 246-8125

Map and Direction


Primary Care Clinic Profile

Full NameMainstay Clinics Inc
SpecialityClinic/center - Primary Care
Location333 Peterson Rd Ste 240, Libertyville, Illinois
Authorized Official Name and PositionAlexander Jarosz (TREASURER)
Authorized Official Contact2247170447
Accepts Medicare InsuranceThis clinic does not participate in Medicare Program.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Mainstay Clinics Inc
17942 W Pond Ridge Cir
Gurnee
IL 60031-4534

Ph: (224) 303-4138
Mainstay Clinics Inc
333 Peterson Rd Ste 240
Libertyville
IL 60048-1085

Ph: (224) 864-2124

NPI Details:

NPI Number1053816405
Provider Enumeration Date03/28/2018
Last Update Date08/15/2025

Medical Identifiers

Medical identifiers for Mainstay Clinics Inc such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1053816405NPI-NPPES
338829946001MedicaidIL

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
261QP2300XClinic/center - Primary Care (* (Not Available))Primary

Reviews and Comments


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Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.