Michael A Williams, DC

Michael A Williams is a Sports Physician Chiropractor provider (Chiropractor) practicing in O Fallon, MO, registered in the NPPES registry with NPI 1922098599 since 2005. The credential DC stands for Doctor of Chiropractic.

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI	1922098599
Entity type	Individual (Type 1)
Name	Michael A Williams
Credential	DC
Sex	Male
Practice address	O Fallon, MO, 63366
Phone	6362020721
Enumeration date	2005-10-25
Last updated in NPPES	2022-10-27

Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
111NS0005X	Sports Physician Chiropractor	Primary	CE-006167	MO

DC — Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC credential

Copy-ready billing details

Provider: Michael Williams, DC
NPI: 1922098599
Taxonomy: 111NS0005X (Sports Physician Chiropractor)
Address: O Fallon, MO, 63366

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1376055004	Jenny Hawthorne	Individual	Family Nurse Practitioner	O Fallon, MO

Verify this record

Cross-check NPI 1922098599 against the authoritative CMS record: view Michael A Williams on the official NPPES registry .

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 or validate an NPI number.

Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Michael Williams?

Michael Williams is registered in NPPES with the primary taxonomy of Sports Physician Chiropractor. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2022-10-27.