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

Karren L Tan, NP

Family Nurse Practitioner in Anaheim, CA · enumerated 2021.

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

National Provider Identifier

1578226064

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Registry record

Entity type Individual (Type 1)
Name Karren L Tan
Credential NP
Sex Female
Practice address Anaheim, CA, 92808
Phone (714) 282-6934
Fax (714) 282-6935
Enumeration date Oct 21, 2021
Last updated in NPPES Jan 12, 2026

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

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 95018902 (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.

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Frequently asked questions

How do I verify Karren Tan's NPI record?
Cross-check NPI 1578226064 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1578226064 active?
Yes, as of the latest NPPES snapshot, NPI 1578226064 is active (record last updated 2026-01-12).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-01-12.