Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

John Karlin, ARNP

Individual provider Nurse Practitioner · NPI 1225436876

John Karlin, ARNP is a Nurse Practitioner in Klamath Falls, Oregon. Qualified in 2024, 2 years ago. Practices with Clinton Hospital Authority, a 14-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Oklahoma and Oregon.

Years since qualifying
2
Licensed in
OK, OR
In the registry since
2014
Specialties on file
2
What do these letters mean?
ARNP — Advanced Registered Nurse Practitioner
The title some states use for an advanced practice nurse.

See every abbreviation used in this directory →

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Practice location Address checks out

2865 Daggett Ave
Klamath Falls, OR 97601-1106
Phone: (541) 274-6221
Show map & directions

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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 215 N Kansas St, Weatherford, OK 73096-5443 — (580) 774-4768

Specialties & licences

Nurse Practitioner (primary) Taxonomy 363L00000X · Licence OK74696 (OK)
Nurse Practitioner Taxonomy 363L00000X · Licence 10026228 (OR)

Record details

NPI number1225436876
Entity typeIndividual (Type 1)
GenderMale
Credentials ARNP
Sole proprietorNo
NPI enumeratedDecember 15, 2014
Last updated in NPPESDecember 30, 2024
Certification dateDecember 30, 2024

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2024 (2 years in practice)
Group practice Clinton Hospital Authority — 14 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations5 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients101
Services billed 312 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • Cordell Memorial Hospital Hospital · Cordell, OK · listed as Cordell Memorial Hospital 0189
  • Grande Ronde Hospital Hospital · La Grande, OR
  • Clinton Regional Hospital Hospital · Clinton, OK
  • Clinton Regional Hospital Hospital · Clinton, OK

Colleagues at Clinton Hospital Authority

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 14 clinicians in the practice; 12 are shown here.

Other providers in Klamath Falls