Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. William M Haas, D.C.
Chiropractor in Peoria, AZ · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1144223561
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Registry record
Entity type Individual (Type 1)
Name Dr. William M Haas
Credential D.C.
Sex Male
Practice address 13260 N 94th Dr, Suite 205, Peoria, AZ, 85381
Phone (623) 583-6570
Fax (623) 583-6571
Enumeration date May 31, 2005
Last updated in NPPES Nov 6, 2007
Taxonomy & licenses
DC · Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders.
About the DC credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| AZ0939450 | Other | AZ | BCBS ID |
| Z103320 | Other | AZ | MEDICARE ID-PIN |
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.
Frequently asked questions
Where does William Haas practice?
The practice location on file with NPPES is in Peoria, AZ. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for William Haas?
The National Provider Identifier (NPI) for William Haas is 1144223561, a Type 1 (individual) record in the CMS NPPES registry.
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-11-06.