Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

John Karlin, ARNP

Q: What is the NPI number for John Karlin?

The National Provider Identifier (NPI) for John Karlin is 1225436876, a Type 1 (individual) record in the CMS NPPES registry.

Nurse Practitioner in Klamath Falls, OR · enumerated 2014.

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

National Provider Identifier

1225436876

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Registry record

Entity type Individual (Type 1)

Name John Karlin

Credential ARNP

Sex Male

Practice address 2865 Daggett Ave, Klamath Falls, OR, 97601

Phone (541) 274-6221

Enumeration date Dec 15, 2014

Last updated in NPPES Dec 30, 2024

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 10026228 (OR) Secondary

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License OK74696 (OK) 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 John Karlin?

The National Provider Identifier (NPI) for John Karlin is 1225436876, a Type 1 (individual) record in the CMS NPPES registry.

Where does John Karlin practice?

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

Other providers at this practice address

Browse all →

Grant Niskanen Family Medicine Physician · Klamath Falls, OR NPI 1801898358 Slavka Kucinska Internal Medicine Physician · Klamath Falls, OR NPI 1982698221 Frank Marx Internal Medicine Physician · Klamath Falls, OR NPI 1942296678 Jeffrey Walker Anatomic Pathology & Clinical Pathology Physician · Klamath Falls, OR NPI 1801883319 Miguel Montes Clinical Pathology/Laboratory Medicine Physician · Klamath Falls, OR NPI 1083688360 Konrad Eppel Emergency Medicine Physician · Klamath Falls, OR NPI 1669449120 Sky Lakes Medical Center Inc General Acute Care Hospital · Klamath Falls, OR NPI 1659340370 J Brunswick Emergency Medicine Physician · Klamath Falls, OR NPI 1902864275

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-12-30.