NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Karen Linnea Peterson, MD

Otolaryngology Physician in Pasadena, CA · enumerated 2006.

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

National Provider Identifier

1518970235

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Karen Linnea Peterson
Credential MD
Sex Female
Practice address 960 E Green St Ste 208, Pasadena, CA, 91106
Phone (424) 314-0196
Enumeration date Aug 14, 2006
Last updated in NPPES Dec 6, 2023

Taxonomy & licenses

207Y00000X Otolaryngology Physician Allopathic & Osteopathic Physicians · License MD00036232 (WA) Secondary
207Y00000X Otolaryngology Physician Allopathic & Osteopathic Physicians · License A53128 (CA) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
8230948 Medicaid WA -
040014303 Other - RAILROAD MEDICARE
0039572 Other WA LABOR & INDUSTRY
MD5018W Other WA ALASKA MEDICAID
PE3331 Other WA BLUE SHIELD
US1037408 Other WA AETNA/USHC SPECIALIST

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

Is NPI 1518970235 active?
Yes, as of the latest NPPES snapshot, NPI 1518970235 is active (record last updated 2023-12-06).
How do I verify Karen Peterson's NPI record?
Cross-check NPI 1518970235 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-12-06.