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Internal Medicine

Kathlyn R. Cook, MD

Works at hospitals in Fayetteville, AR · Arkansas

Summary

Dr. Kathlyn R. Cook, MD is an internal medicine doctor at 3215 N Northhills Blvd, Washington Regional Hospital Medicine Group, Fayetteville, AR 72703. Phone: (479) 463-7102. Accepts Medicare assignment. In 2024, Kathlyn R. Cook had 98 Original Medicare patients and 234 services. NPI 1497923445. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 3215 N Northhills Blvd, Washington Regional Hospital Medicine Group, Fayetteville, AR 72703 · Directions
  • Phone: (479) 463‑7102
  • Medicare: Accepts Medicare assignment
  • Hospital: Washington Regional Medical Center
  • Group practice: Washington Regional Medical System
  • Medical school: University Of Arkansas College Of Medicine · graduated 2006 (20 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Kathlyn R. Cook, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Kathlyn R. Cook accept Medicare assignment?
Yes. Medicare's clinician data says Kathlyn R. Cook accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Kathlyn R. Cook see?
In 2024, CMS data shows 98 Original Medicare patients and 234 services for Kathlyn R. Cook. This counts Original Medicare only and measures volume, not quality.
What is Kathlyn R. Cook's NPI number?
1497923445. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Kathlyn R. Cook, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients98
Services billed to Medicare234
Different services or procedures7
Participating Medicare providerYes
Average age of these patients74

Most frequent services

  1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)65 services
  2. Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)46 services
  3. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)40 services
  4. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)39 services
  5. Prolonged hospital inpatient or observation care evaluation and management service(s) beyond the total time for the primary service (when the primary service has been selected using time on the date of the primary service); each additional 15 minutes by th (G0316)21 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • High cholesterol63%
  • Arthritis61%
  • Heart failure56%
  • Ischemic heart disease52%
  • Anxiety47%

Hospitals where Kathlyn R. Cook works

Medicare's Facility Affiliation Data lists Kathlyn R. Cook at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Kathlyn R. Cook is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Kathlyn R. Cook as a member of this group (CMS data updated October 2, 2026).

  • Washington Regional Medical System238 clinicians in the group

Specialties

Find other Internal Medicine doctors in Arkansas →

Other internal medicine doctors in Fayetteville

Clinicians with the same Medicare primary specialty in Fayetteville, AR — not a recommendation.

All internal medicine doctors in Fayetteville →

Other clinicians in Washington Regional Medical System

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolUniversity Of Arkansas College Of Medicine
Graduation year2006 (20 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1497923445
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians