Skip to main content

Dr. Mark Dransfield

Critical Care Medicine (Critical Care Medicine (Internal Medicine) Physician)

  • Medicare participating

At a glance

Years since graduation
29
In the NPI registry since
2006
Medicare patients seen, 2024
18

Licensed in Alabama since 1998, according to the Alabama Board of Medical Examiners and Medical Licensure Commission. We show license dates only for the states that publish them in bulk; see which states do. For other states, check the state medical board.

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

  • 1997Medical school: University of North Carolina at Chapel Hill 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

  • Critical Care Medicine (Internal Medicine) Physician primary
    AL license 22002 (first issued 1998; active)

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

Map: Critical Care 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
18
Services billed
32
Patients’ average age
72
Most frequent Medicare services, 2023
ServiceTimesPatients
Established patient office or other outpatient visit, 30-39 minutes2417

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 1 payments worth $134 in total to this clinician.

By company
Verona Pharma, Inc.$134
By type
Food and Beverage$134

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 Alabama →

Industry-funded research

Named as a principal investigator on 1 industry-funded study in 2025, from 1 company. The companies reported $112,683 in research payments for these studies, mostly to the institutions running them.

  • A Phase III, Multicentre, Randomised, Double-blind, Chronic-dosing, Parallel-group, Placebo-controlled Study to Evaluate the Efficacy and Safety of Tozorakimab in Participants with Symptomatic Chronic Obstructive Pulm…
    AstraZeneca Pharmaceuticals LP

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 Critical Care Medicine clinicians in Birmingham

Sources

NPI registry (CMS NPPES, November 2026; record last updated February 1, 2024), 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 1770526725. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.