Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Aaron Klein, CPNP

Q: What is the NPI number for Aaron Klein?

The National Provider Identifier (NPI) for Aaron Klein is 1598200180, a Type 1 (individual) record in the CMS NPPES registry.

Pediatric Nurse Practitioner in Clackamas, OR · enumerated 2017.

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

National Provider Identifier

1598200180

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Registry record

Entity type Individual (Type 1)

Name Aaron Klein

Credential CPNP

Sex Male

Practice address 8645 Se Sunnybrook Blvd Ste 200, Clackamas, OR, 97015

Phone (503) 659-1694

Fax (503) 659-8984

Enumeration date Jan 5, 2017

Last updated in NPPES Jun 30, 2022

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 201810561NP-PP (OR) Secondary

363LP0200X Pediatric Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License AP60997794 (WA) 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

What is the NPI number for Aaron Klein?

The National Provider Identifier (NPI) for Aaron Klein is 1598200180, a Type 1 (individual) record in the CMS NPPES registry.

Where does Aaron Klein practice?

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

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-06-30.