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Dr. Peter M. Barclay, MD

Cardiology (Cardiovascular Disease Physician)

  • Medicare participating

At a glance

Years since graduation
30
In the NPI registry since
2006
Medicare patients seen, 2024
3,066

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

  • 1996Medical school: Pennsylvania State University College 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

  • Cardiovascular Disease Physician primary
    PA license MD066126L
  • Internal Medicine Physician
    PA license MD66126L

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
3,066
Services billed
5,648
Patients’ average age
77
Most frequent Medicare services, 2023
ServiceTimesPatients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only2,1821,683
Ultrasound of heart with color-depicted blood flow, rate, direction and valve function878873
Ultrasound of heart with color-depicted blood flow, rate and valve function266229
Exercise or drug-induced heart stress test with electrocardiogram (ecg) with review by physician225224
Ultrasound of heart, follow-up221200
Heart muscle strain imaging190188
Ultrasound of heart blood flow, valves and chambers, follow-up162148
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report152148
Nuclear medicine study of heart muscle blood flow by pet122122
Nuclear medicine studies of blood flow in heart muscle at rest and with stress with concurrent ct scan122122

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

Most prescribed drugs, Medicare Part D 2024
DrugPrescriptions
Rosuvastatin Calcium
Other prescribers in York, PA
41
Eliquis (apixaban)
Other prescribers in York, PA
12

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

Other Cardiology clinicians in York

Sources

NPI registry (CMS NPPES, November 2026; record last updated July 27, 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 1962431338. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.