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Dr. Nicholas J. Leeper, MD

Cardiology (Cardiovascular Disease Physician)

300 Pasteur Dr
Palo Alto, CA 94304

Who else practices at this address →

Santa Clara County includes mental health (13% of residents) shortage areas. About shortage areas

Call (650) 723-4000

At a glance

Years since graduation
23
In the NPI registry since
2007

Licensed in California since 2005, according to the Medical Board of California. 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

  • 2003Medical school: University of Chicago, Pritzker School 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
    CA license A90602 (first issued 2005; current)

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

Most frequent Medicare services, 2023
ServiceTimesPatients
Ultrasound of both sides of head and neck blood flow243234
Ultrasound study of arm and leg arteries175173
Ultrasound study of arm or leg veins with compression and maneuvers142136
Ultrasound study of one arm or leg veins with compression and maneuvers113100
Established patient office or other outpatient visit, 30-39 minutes10367
Complete ultrasound study of arm and leg arteries8077
Ultrasound of one leg arteries or artery grafts7567
Ultrasound of leg arteries or artery grafts6664
Complete ultrasound of abdomen and pelvis artery and vein blood flow5654
Ultrasound of arm arteries or artery grafts3737

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 Cardiology clinicians in Palo Alto

Sources

NPI registry (CMS NPPES, November 2026; record last updated April 23, 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 1407044639. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.