Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Charles Ruby, AU.D.
Audiologist in San Diego, CA · enumerated 2016.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1053864009
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Registry record
Entity type Individual (Type 1)
Name Charles Ruby
Credential AU.D.
Sex Male
Practice address 200 W Arbor Dr, San Diego, CA, 92103
Phone (800) 926-8273
Fax (888) 539-8781
Enumeration date Jul 26, 2016
Last updated in NPPES May 16, 2023
Taxonomy & licenses
231H00000X Audiologist Speech, Language and Hearing Service Providers · License AU 3131 (CA) Primary
AUD · Doctor of Audiology: A licensed audiologist diagnosing and treating hearing and balance disorders.
About the AUD credential
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 Charles Ruby practice?
The practice location on file with NPPES is in San Diego, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Charles Ruby?
The National Provider Identifier (NPI) for Charles Ruby is 1053864009, 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 2023-05-16.