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Dr. Peter Baciewicz, M.D.

Cardiology (Cardiovascular Disease Physician)

904 7th Ave
Seattle, WA 98104

Who else practices at this address →

King County includes primary care (5% of residents) and dental (4% of residents) and mental health (4% of residents) shortage areas. About shortage areas

Call (206) 329-1760

  • Medicare participating

At a glance

Years since graduation
43
In the NPI registry since
2006
Medicare patients seen, 2024
1,156

Licensed in Washington since 1986, according to the Washington State Department of Health. 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

  • 1983Medical school: New York University 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

  • Cardiovascular Disease Physician primary
    WA license MD00023712 (first issued 1986; 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
1,156
Services billed
7,947
Patients’ average age
75
Most frequent Medicare services, 2023
ServiceTimesPatients
Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml4,38948
Established patient office or other outpatient visit, 30-39 minutes802510
Insertion of needle into vein for collection of blood sample569341
Blood test, comprehensive group of blood chemicals365275
Blood test, lipids (cholesterol and triglycerides)314245
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report292268
Ultrasound of heart with color-depicted blood flow, rate, direction and valve function281263
Blood test, basic group of blood chemicals (calcium, total)190102
Established patient office or other outpatient visit, 40-54 minutes139117
Injection, regadenoson, 0.1 mg13634

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 Seattle

Sources

NPI registry (CMS NPPES, November 2026; record last updated July 9, 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 1689640351. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.