Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Mathers Clinic LLC

Psychiatry Physician in Crystal Lake, IL · enumerated 2011 · authorized official Robert Meyer, Owner.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1316237530

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)

Legal business name Mathers Clinic LLC

Other name <Unavail>

Practice address 145 S Virginia St, Crystal Lake, IL, 60014

Phone (815) 444-9999

Fax (815) 356-6680

Enumeration date Apr 8, 2011

Last updated in NPPES Sep 26, 2025

Taxonomy & classification

101Y00000X Counselor Behavioral Health & Social Service Providers · License 36039266 (IL) Secondary

103T00000X Psychologist Behavioral Health & Social Service Providers Secondary

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians Secondary

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians Primary

2084P0804X Child & Adolescent Psychiatry Physician Allopathic & Osteopathic Physicians · License 36039266 (IL) Secondary

Authorized official

Name Robert Meyer

Title Owner

Phone (815) 444-9999

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Where is Mathers Clinic LLC located?

The practice location on file with NPPES is in Crystal Lake, IL.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2025-09-26. Verify at npiregistry.cms.hhs.gov.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-26.