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Internal Medicine

Jennifer A. Killion, MD

Works at hospitals in Boone, IA · Ames, IA · Nevada, IA · Iowa

Summary

Dr. Jennifer A. Killion, MD is an internal medicine doctor at 1015 Duff Ave, Ames, IA 50010. Phone: (515) 239-4400. Accepts Medicare assignment. In 2024, Jennifer A. Killion had 647 Original Medicare patients and 9,514 services. NPI 1649269648. 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.

From official Medicare data

This page shows what Medicare's official clinician data says about Jennifer A. Killion, 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 Jennifer A. Killion accept Medicare assignment?
Yes. Medicare's clinician data says Jennifer A. Killion 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 Jennifer A. Killion see?
In 2024, CMS data shows 647 Original Medicare patients and 9,514 services for Jennifer A. Killion. This counts Original Medicare only and measures volume, not quality.
What is Jennifer A. Killion's NPI number?
1649269648. 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 Jennifer A. Killion, 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 patients647
Services billed to Medicare9,514
Different services or procedures127
Participating Medicare providerYes
Average age of these patients77

Most frequent services

  1. Injection, denosumab, 1 mg (J0897)2,100 services
  2. Insertion of needle into vein for collection of blood sample (36415)848 services
  3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)766 services
  4. Blood test, comprehensive group of blood chemicals (80053)476 services
  5. Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count (85025)456 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 cholesterol75%
  • High blood pressure70%
  • Arthritis40%
  • Diabetes23%
  • Chronic kidney disease20%
  • Ischemic heart disease18%

Hospitals where Jennifer A. Killion works

Medicare's Facility Affiliation Data lists Jennifer A. Killion 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.

  • Boone County HospitalBoone, IA · Critical Access Hospital · Emergency services: listed by Medicare · CCN 161372
  • Mary Greeley Medical CenterAmes, IA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 160030
  • Story County HospitalNevada, IA · Critical Access Hospital · Emergency services: listed by Medicare · CCN 161333

Practice locations

Addresses where Jennifer A. Killion is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 9; the Medicare profile lists all.

Group practices

Medicare enrollment lists Jennifer A. Killion as a member of this group (CMS data updated October 2, 2026).

  • McFarland Clinic PC363 clinicians in the group

Specialties

Find other Internal Medicine doctors in Iowa →

Other internal medicine doctors in Ames

Clinicians with the same Medicare primary specialty in Ames, IA — not a recommendation.

All internal medicine doctors in Ames →

Other clinicians in McFarland Clinic PC

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

Clinician information

CredentialMD
Medical schoolUniversity Of Iowa, Rj & L Carver College Of Medicine
Graduation year2000 (26 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1649269648
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