Dr. Aaron Theresa Williams, D.C.

Dr. Aaron Theresa Williams is a Chiropractor provider (Chiropractor) practicing in Altadena, CA, registered in the NPPES registry with NPI 1386884062 since 2009. The credential DC stands for Doctor of Chiropractic. Practices at Alfa Diagnostic Network, Inc (listed at the same practice address in NPPES).

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI	1386884062
Entity type	Individual (Type 1)
Name	Dr. Aaron Theresa Williams
Credential	D.C.
Sex	Female
Practice address	Altadena, CA, 91001
Phone	6267973602
Fax	6267979669
Enumeration date	2009-02-20
Last updated in NPPES	2013-11-12

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

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
111N00000X	Chiropractor	Primary	DC13903	CA

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

Copy-ready billing details

Provider: Aaron Williams, D.C.
NPI: 1386884062
Taxonomy: 111N00000X (Chiropractor)
Address: Altadena, CA, 91001

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1992026272	Alfa Diagnostic Network, Inc	Organization	Radiology Clinic/Center	Altadena, CA
1043677677	Leonard Frayman	Individual	Long Term Care Pharmacy	Altadena, CA
1699334250	Karim Abdel-Wahab	Individual	Addiction (Substance Use Disorder) Counselor	Altadena, CA

Verify this record

Cross-check NPI 1386884062 against the authoritative CMS record: view Dr. Aaron Theresa 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

What specialty is Aaron Williams?

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

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.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2013-11-12.