NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Joseph Rocco Mercardante Jr.

General Practice Dentistry in Nipomo, CA · enumerated 2006.

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

National Provider Identifier

1235157405

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Joseph Rocco Mercardante Jr.
Sex Male
Practice address Nipomo, CA, 93444
Enumeration date Jul 17, 2006
Last updated in NPPES Jul 8, 2007

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License 25174 (CA) Primary

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 Joseph Mercardante practice?
The practice location on file with NPPES is in Nipomo, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Joseph Mercardante?
The National Provider Identifier (NPI) for Joseph Mercardante is 1235157405, 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 2007-07-08.