NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Ernest Daniel Mackey, MD

Pediatric Adolescent Medicine Physician in Tustin, CA · enumerated 2006.

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

National Provider Identifier

1326017690

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Ernest Daniel Mackey
Credential MD
Sex Male
Practice address 13132 Newport Ave, 100, Tustin, CA, 92780
Phone (714) 565-7960
Fax (714) 565-7982
Enumeration date Mar 17, 2006
Last updated in NPPES Jan 4, 2011

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License A61274 (CA) Secondary
2080A0000X Pediatric Adolescent Medicine Physician Allopathic & Osteopathic Physicians · License A61274 (CA) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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

What is the NPI number for Ernest Mackey?
The National Provider Identifier (NPI) for Ernest Mackey is 1326017690, a Type 1 (individual) record in the CMS NPPES registry.
Where does Ernest Mackey practice?
The practice location on file with NPPES is in Tustin, CA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-01-04.