Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Chiropractic Health Services PC

Chiropractor in Tinley Park, IL · enumerated 2010 · authorized official Ann Zajac, Doctor/Owner.

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

National Provider Identifier

1184941692

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Registry record

Entity type Organization (Type 2)

Legal business name Chiropractic Health Services PC

Practice address 17314 Oak Park Ave, Tinley Park, IL, 60477

Phone (708) 614-1400

Fax (708) 614-1426

Enumeration date Apr 23, 2010

Last updated in NPPES Jul 13, 2010

Taxonomy & classification

111N00000X Chiropractor Chiropractic Providers · License 038006031 (IL) Primary

Authorized official

Name Ann Zajac

Title Doctor/Owner

Phone (708) 614-1400

Other identifiers

Identifier	Type	State	Issuer
0001617968	Other	IL	BC/BS

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 Chiropractic Health Services PC located?

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

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2010-07-13. Verify at npiregistry.cms.hhs.gov.

Providers at this address

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Hoekstra Chiropractic LLC Chiropractor · Tinley Park, IL NPI 1871731497

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-07-13.