NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Ralph Allan Adiong Osorio, RN, MSN, NP-C

Family Nurse Practitioner in Norwalk, CA · enumerated 2019.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1578101531

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Mr. Ralph Allan Adiong Osorio
Credential RN, MSN, NP-C
Sex Male
Practice address 13939 San Antonio Dr, Norwalk, CA, 90650
Phone (562) 807-3777
Fax (562) 807-2333
Enumeration date Dec 20, 2019
Last updated in NPPES Dec 20, 2019

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 95006751 (CA) Primary
RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam. About the RN 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Ralph Allan Osorio practice?
The practice location on file with NPPES is in Norwalk, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Ralph Allan Osorio?
The National Provider Identifier (NPI) for Ralph Allan Osorio is 1578101531, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-12-20.