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Dr. Michael R. Cox, MD

Internal Medicine (Internal Medicine Physician)

  • Medicare participating

At a glance

Years since graduation
36
In the NPI registry since
2006
Medicare patients seen, 2024
1,753

The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is

Education and training

  • 1990Medical school: University of Kansas School of Med (Kc/Wich/Sal)
  • 2006Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier

Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).

Specialties and state licenses

  • Internal Medicine Physician primary
    KS license 04-23727

As reported to the NPI registry. To confirm a license is current, check the state medical board.

Map: Internal Medicine per capita by county →

Where they work

Hospitals

Medical groups

Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.

Medicare patients and services

Medicare patients, 2024
1,753
Services billed
6,087
Patients’ average age
75
Most frequent Medicare services, 2023
ServiceTimesPatients
Dxa bone density measurement of hip, pelvis, spine1,0271,027
Insertion of needle into vein for collection of blood sample933662
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit631631
Established patient office or other outpatient visit, 30-39 minutes499438
Established patient office or other outpatient visit, 40-54 minutes396379
Screening 3d breast mammography221221
Screening mammography221221
Administration of influenza virus vaccine169168
Influenza vaccine, quadrivalent inactivated, 0.5 ml dosage167166
Established patient office or other outpatient visit, 20-29 minutes141123

Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.

Medicare prescriptions

Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.

Payments from drug and device companies

In 2025, 1 companies reported 18 payments worth $3,123 in total to this clinician.

By company
Merck Sharp & Dohme LLC$3,123
By type
Travel and Lodging$2,653
Food and Beverage$470

What the payments were for

Largest payments other than meals
DateCompanyWhat it was forAmount
Sep 10, 2025Merck Sharp & Dohme LLC
Sep 10, 2025
Travel and Lodging
CARDIOVASCULAR · travel to Phoenix, AZ · in-kind
Company’s descriptionProvided as part of a clinical research engagement.
$372
Sep 23, 2025Merck Sharp & Dohme LLC
Sep 23, 2025
Travel and Lodging
CARDIOVASCULAR · travel to Atlanta, GA · in-kind
Company’s descriptionProvided as part of a clinical research engagement.
$369
Sep 9, 2025Merck Sharp & Dohme LLC
Sep 9, 2025
Travel and Lodging
CARDIOVASCULAR · travel to Phoenix, AZ · in-kind
Company’s descriptionProvided as part of a clinical research engagement.
$334
Sep 10, 2025Merck Sharp & Dohme LLC
Sep 10, 2025
Travel and Lodging
CARDIOVASCULAR · travel to Phoenix, AZ · in-kind
Company’s descriptionProvided as part of a clinical research engagement.
$334
Sep 9, 2025Merck Sharp & Dohme LLC
Sep 9, 2025
Travel and Lodging
CARDIOVASCULAR · travel to Phoenix, AZ · in-kind
Company’s descriptionProvided as part of a clinical research engagement.
$241
Sep 23, 2025Merck Sharp & Dohme LLC
Sep 23, 2025
Travel and Lodging
CARDIOVASCULAR · travel to Atlanta, GA · in-kind
Company’s descriptionProvided as part of a clinical research engagement.
$238
Sep 24, 2025Merck Sharp & Dohme LLC
Sep 24, 2025
Travel and Lodging
CARDIOVASCULAR · travel to Atlanta, GA · in-kind
Company’s descriptionProvided as part of a clinical research engagement.
$238
Oct 22, 2025Merck Sharp & Dohme LLC
Oct 22, 2025
Travel and Lodging
CARDIOVASCULAR · travel to Atlanta, GA
Company’s descriptionProvided as part of a clinical research engagement.
$166
Sep 10, 2025Merck Sharp & Dohme LLC
Sep 10, 2025
Travel and Lodging
CARDIOVASCULAR · travel to Phoenix, AZ · in-kind
Company’s descriptionProvided as part of a clinical research engagement.
$140
Sep 23, 2025Merck Sharp & Dohme LLC
Sep 23, 2025
Travel and Lodging
CARDIOVASCULAR · travel to Atlanta, GA · in-kind
Company’s descriptionProvided as part of a clinical research engagement.
$126
All 11 payments other than meals, newest first
All payments other than meals
DateCompanyWhat it was forAmount
Oct 22, 2025Merck Sharp & Dohme LLC
Oct 22, 2025
Travel and Lodging
CARDIOVASCULAR · travel to Atlanta, GA
Company’s descriptionProvided as part of a clinical research engagement.
$166
Sep 24, 2025Merck Sharp & Dohme LLC
Sep 24, 2025
Travel and Lodging
CARDIOVASCULAR · travel to Atlanta, GA · in-kind
Company’s descriptionProvided as part of a clinical research engagement.
$238
Sep 23, 2025Merck Sharp & Dohme LLC
Sep 23, 2025
Travel and Lodging
CARDIOVASCULAR · travel to Atlanta, GA · in-kind
Company’s descriptionProvided as part of a clinical research engagement.
$369
Sep 23, 2025Merck Sharp & Dohme LLC
Sep 23, 2025
Travel and Lodging
CARDIOVASCULAR · travel to Atlanta, GA · in-kind
Company’s descriptionProvided as part of a clinical research engagement.
$238
Sep 23, 2025Merck Sharp & Dohme LLC
Sep 23, 2025
Travel and Lodging
CARDIOVASCULAR · travel to Atlanta, GA · in-kind
Company’s descriptionProvided as part of a clinical research engagement.
$126
Sep 23, 2025Merck Sharp & Dohme LLC
Sep 23, 2025
Travel and Lodging
CARDIOVASCULAR · travel to Atlanta, GA · in-kind
Company’s descriptionProvided as part of a clinical research engagement.
$97.70
Sep 10, 2025Merck Sharp & Dohme LLC
Sep 10, 2025
Travel and Lodging
CARDIOVASCULAR · travel to Phoenix, AZ · in-kind
Company’s descriptionProvided as part of a clinical research engagement.
$372
Sep 10, 2025Merck Sharp & Dohme LLC
Sep 10, 2025
Travel and Lodging
CARDIOVASCULAR · travel to Phoenix, AZ · in-kind
Company’s descriptionProvided as part of a clinical research engagement.
$334
Sep 10, 2025Merck Sharp & Dohme LLC
Sep 10, 2025
Travel and Lodging
CARDIOVASCULAR · travel to Phoenix, AZ · in-kind
Company’s descriptionProvided as part of a clinical research engagement.
$140
Sep 9, 2025Merck Sharp & Dohme LLC
Sep 9, 2025
Travel and Lodging
CARDIOVASCULAR · travel to Phoenix, AZ · in-kind
Company’s descriptionProvided as part of a clinical research engagement.
$334
Sep 9, 2025Merck Sharp & Dohme LLC
Sep 9, 2025
Travel and Lodging
CARDIOVASCULAR · travel to Phoenix, AZ · in-kind
Company’s descriptionProvided as part of a clinical research engagement.
$241

Each payment as the company reported it, with the products it named. Meals are counted in the totals above but not listed one by one.

From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.

Who received the most in Kansas →

Industry-funded research

Named as a principal investigator on 7 industry-funded studies in 2025, from 3 companies. The companies reported $498,173 in research payments for these studies, mostly to the institutions running them.

From CMS Open Payments research payments, where companies name up to five principal investigators per payment. Research payments usually go to hospitals, universities and research sites, not to the investigator personally. A payment is not evidence of wrongdoing.

Other Internal Medicine clinicians in Topeka

Sources

NPI registry (CMS NPPES, November 2026; record last updated February 6, 2026), Medicare Care Compare, Medicare Physician & Other Practitioners (2024), Medicare Part D Prescribers (2024) and Open Payments (2025). Information is self-reported or billed data and may be out of date; call before visiting.

NPI 1275593451. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.