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Dr. Peter A. Johnson, MD

Cardiology (Cardiovascular Disease Physician)

  • Medicare participating

At a glance

Years since graduation
22
In the NPI registry since
2007
Medicare patients seen, 2024
1,217

Licensed in Alabama since 2006, 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

  • 2004Medical school: University of South Alabama College of Medicine
  • 2007Registered 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

  • Cardiovascular Disease Physician primary
    AL license 27573 (first issued 2006; active)

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

Map: Cardiology 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
1,217
Services billed
3,689
Patients’ average age
75
Most frequent Medicare services, 2023
ServiceTimesPatients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report824571
Established patient office or other outpatient visit, 30-39 minutes639471
Ultrasound of heart with color-depicted blood flow, rate, direction and valve function583573
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes208100
Injection, regadenoson, 0.1 mg15238
New patient office or other outpatient visit, 45-59 minutes131131
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes8986
Technetium tc-99m sestamibi, diagnostic, per study dose6443
Nuclear medicine studies of heart muscle at rest and with stress and spect3939
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes3633

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, 13 companies reported 38 payments worth $686 in total to this clinician.

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 →

Other Cardiology clinicians in Decatur

Sources

NPI registry (CMS NPPES, November 2026; record last updated May 31, 2013), 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 1801008776. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.