JOHN KARLIN ARNP
NPI 1225436876
Nurse Practitioner in Klamath Falls, OR
About John Karlin Arnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN KARLIN ARNP (NPI 1225436876) is an individual nurse practitioner in Klamath Falls, Oregon, licensed in Oklahoma (OK74696) and active in the NPI registry since December 2014. He is enrolled in Medicare PECOS, is affiliated with Clinton Regional Hospital, and maintains a secondary practice location in Weatherford.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
John Karlin Arnp is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
12Medicare enrollment records show John Karlin reassigns Medicare billing to 12 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Klamath Falls, OR 97601
- Reassigned Medicare billing, Oregon enrollment
- 355 clinicians in this Medicare group
Pleasant Hill, OR 97455
- Reassigned Medicare billing, Oregon enrollment
- 190 clinicians in this Medicare group
La Grande, OR 97850
- Reassigned Medicare billing, Oregon enrollment
- 158 clinicians in this Medicare group
Laverne, OK 73848
- Reassigned Medicare billing, Oklahoma enrollment
- 5 clinicians in this Medicare group
Clinton, OK 73601
- Reassigned Medicare billing, Oklahoma enrollment
- 26 clinicians in this Medicare group
Cordell, OK 73632
- Reassigned Medicare billing, Oklahoma enrollment
- 19 clinicians in this Medicare group
Weatherford, OK 73096
- Reassigned Medicare billing, Oklahoma enrollment
- 15 clinicians in this Medicare group
Carnegie, OK 73015
- Reassigned Medicare billing, Oklahoma enrollment
- 48 clinicians in this Medicare group
Oklahoma City, OK 73099
- Reassigned Medicare billing, Oklahoma enrollment
- 30 clinicians in this Medicare group
Oklahoma City, OK 73102
- Reassigned Medicare billing, Oklahoma enrollment
- Medicare enrollment name: Emergency Physicians Of Mid-America PC
- 310 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 5
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Clinton Regional Hospital
Acute Care Hospitals · Clinton, OKCordell Memorial Hospital
Critical Access Hospitals · Cordell, OKGrande Ronde Hospital
Critical Access Hospitals · La Grande, ORPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 97601 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
KLAMATH FALLS, OR 97601
KLAMATH FALLS, OR 97601
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is John Karlin's NPI number?
The NPI number for John Karlin is 1225436876. It was assigned to this individual provider in the NPPES registry on December 15, 2014.
Where is John Karlin located?
John Karlin practices at 2865 Daggett Ave, Klamath Falls, OR 97601. The listed phone number is (541) 274-6221.
What is John Karlin's specialty?
The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.
Is John Karlin enrolled in Medicare?
Yes. John Karlin is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for John Karlin's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Karlin reassigns Medicare benefits to 12 organizations: Sky Lakes Medical Center Inc (Klamath Falls, OR), Icco LLC (Pleasant Hill, OR), Grande Ronde Hospital, Inc. (La Grande, OR), Harper County Community Hospital (Laverne, OK), Clinton Hospital Authority (Clinton, OK) and 7 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for John Karlin's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Karlin accept?
Health plans from Ambetter Health, Ambetter from Arkansas Health & Wellness, Ambetter from Sunflower Health Plan, Ambetter from Superior HealthPlan and Ambetter of Oklahoma and 8 other insurers list John Karlin as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is John Karlin affiliated with any hospitals?
According to CMS data, John Karlin is affiliated with Clinton Regional Hospital, Cordell Memorial Hospital and Grande Ronde Hospital.
When was this NPI record last updated?
The NPPES record for John Karlin was last updated on December 30, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# John Karlin, ARNP · NPI 1225436876
Nurse Practitioner physician in Klamath Falls, Oregon. Individual provider, active in the CMS NPPES registry since December 15, 2014.
## Identity
- **NPI:** 1225436876 (Entity type: Individual)
- **Enumerated:** December 15, 2014
- **Primary specialty:** Nurse Practitioner · taxonomy 363L00000X
- **State license:** OK74696 (Oklahoma)
- **Sole proprietor:** No
## Practice location
- **Address:** 2865 DAGGETT AVE, Klamath Falls, OR 97601-1106
- **Phone:** (541) 274-6221
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 12 organizations under Medicare reassignment (form CMS-855R): Sky Lakes Medical Center Inc (NPI 1659340370, Klamath Falls, OR); Icco LLC (NPI 1063806842, Pleasant Hill, OR); Grande Ronde Hospital, Inc. (NPI 1467446195, La Grande, OR); Harper County Community Hospital (NPI 1447259791, Laverne, OK); Clinton Hospital Authority (NPI 1528812237, Clinton, OK); and 7 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2024
## Record status
- **NPPES last updated:** December 30, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1225436876) · Data from the CMS NPPES public registry.