Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

On Call Medical Doctors LLC

Internal Medicine Physician in Montgomery, IL · enumerated 2016 · authorized official Ali Matari, Owner.

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

National Provider Identifier

1386091452

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)

Legal business name On Call Medical Doctors LLC

Practice address 1851 Douglas Rd, Montgomery, IL, 60538

Phone (708) 224-6870

Enumeration date May 19, 2016

Last updated in NPPES May 19, 2016

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Ali Matari

Title Owner

Phone (708) 224-6870

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 On Call Medical Doctors LLC located?

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

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2016-05-19. 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 2016-05-19.