William D. Defoyd, D. C.
William D. Defoyd is a Chiropractor provider (Chiropractor) practicing in Austin, TX, registered in the NPPES registry with NPI 1326058850 since 2006. The credential DC stands for Doctor of Chiropractic.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1326058850 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | William D. Defoyd |
| Credential | D. C. |
| Sex | Male |
| Practice address | 4029 S CAPITAL OF TEXAS HWY, SUITE 111, Austin, TX, 78704 |
| Phone | 5123455925 |
| Fax | 5123437113 |
| Enumeration date | 2006-08-08 |
| Last updated in NPPES | 2007-07-09 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 111N00000X | Chiropractor | Primary | 4429 | TX |
DC — Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC credential
Copy-ready billing details
Provider: William Defoyd, D. C. NPI: 1326058850 Taxonomy: 111N00000X (Chiropractor) Address: 4029 S CAPITAL OF TEXAS HWY, SUITE 111, Austin, TX, 78704
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1700890308 | John Luker | Individual | General Practice Physician | Austin, TX |
| 1487769618 | Aman Quadri | Individual | Physical Therapist | Austin, TX |
| 1619192085 | Neblett Enterprises, Lp | Organization | Chiropractor | Austin, TX |
| 1912216342 | Actual Acupuncture and Chinese Medicine | Organization | Acupuncturist | Austin, TX |
| 1861783557 | Randall Kies DDS | Organization | General Practice Dentistry | Austin, TX |
| 1619220811 | Michael Allen Ciaverelli, DDS, P.A. | Organization | Dental Clinic/Center | Austin, TX |
Verify this record
Cross-check NPI 1326058850 against the authoritative CMS record: view William D. Defoyd 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
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-09.