Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mr. Joseph Samuel Alletto, N.P.
Nurse Practitioner in Pasadena, CA · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1538155528
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Registry record
Entity type Individual (Type 1)
Name Mr. Joseph Samuel Alletto
Credential N.P.
Sex Male
Practice address 1839 Monte Vista St, Pasadena, CA, 91107
Phone (626) 793-2228
Enumeration date Sep 23, 2005
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License NP13076 (CA) Primary
NP · Nurse Practitioner: An advanced practice registered nurse with graduate training, licensed to diagnose and treat, often with prescriptive authority.
About the NP 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
What is the NPI number for Joseph Alletto?
The National Provider Identifier (NPI) for Joseph Alletto is 1538155528, a Type 1 (individual) record in the CMS NPPES registry.
Where does Joseph Alletto practice?
The practice location on file with NPPES is in Pasadena, CA. Providers can have multiple locations; NPPES lists the primary practice address.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.