Skip to main content

Dr. Mark D. Earll, MD

Orthopedic Surgery (Orthopaedic Surgery Physician)

  • Medicare participating

At a glance

Years since graduation
33
In the NPI registry since
2006
Medicare patients seen, 2024
295

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

  • 1993Medical school: University of Wisconsin School of Medicine
  • 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

  • Orthopaedic Surgery Physician primary
    WI license 42226

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

Map: Orthopedic Surgery 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
295
Services billed
417
Patients’ average age
74
Most frequent Medicare services, 2023
ServiceTimesPatients
Established patient office or other outpatient visit, 20-29 minutes7573
Established patient office or other outpatient visit, 30-39 minutes6968
Replacement of knee joint, both sides of knee6464
Replacement of thigh bone and hip joint with prosthesis4544
New patient office or other outpatient visit, 30-44 minutes4545
New patient office or other outpatient visit, 45-59 minutes4545
Established patient office or other outpatient visit, 10-19 minutes3030
Aspiration and/or injection of fluid from large joint2827
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes1111

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.

Other Orthopedic Surgery clinicians in Weston

Sources

NPI registry (CMS NPPES, November 2026; record last updated July 8, 2007), 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 1114024940. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.