Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Aaron Ridder

Q: What is the NPI number for Aaron Ridder?

The National Provider Identifier (NPI) for Aaron Ridder is 1558947903, a Type 1 (individual) record in the CMS NPPES registry.

Family Medicine Physician in Whittier, CA · enumerated 2021.

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

National Provider Identifier

1558947903

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Registry record

Entity type Individual (Type 1)

Name Aaron Ridder

Sex Male

Practice address 12291 Washington Blvd Ste 500, Whittier, CA, 90606

Phone (562) 698-0811

Enumeration date Mar 23, 2021

Last updated in NPPES Jul 22, 2024

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 20A21053 (CA) Primary

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary

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 Aaron Ridder practice?

The practice location on file with NPPES is in Whittier, CA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Aaron Ridder?

The National Provider Identifier (NPI) for Aaron Ridder is 1558947903, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Scott Kirsch Family Medicine Physician · Whittier, CA NPI 1821182403 Nelson Dalla Tor Family Medicine Physician · Whittier, CA NPI 1871634162 Jian Ma Chiropractor · Whittier, CA NPI 1265658017 Benjamin Birdsall Family Medicine Physician · Whittier, CA NPI 1740458801 Long Nguyen Student in an Organized Health Care Education/Training Program · Whittier, CA NPI 1093970691 Jorge Mercado Student in an Organized Health Care Education/Training Program · Whittier, CA NPI 1023249216 Valerie Gallegos Family Medicine Physician · Whittier, CA NPI 1407105067 Betty Wong Student in an Organized Health Care Education/Training Program · Whittier, CA NPI 1285263020

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-07-22.