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Dr. Peter M. Barth, M.D.

Hematology & Oncology (Hematology & Oncology Physician)

593 Eddy St
Providence, RI 02903

Who else practices at this address →

Providence County includes mental health (6% of residents) shortage areas. About shortage areas

Call (401) 444-5435

At a glance

In the NPI registry since
2012

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. What an NPI is

Education and training

  • 2012Registered with an NPI (national billing number; not a license date)

Medicare’s Care Compare data doesn’t list this clinician’s medical school. 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

  • Hematology & Oncology Physician primary
    RI license MD15538 · RI license LP03372
  • Internal Medicine Physician
    RI license MD15538

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

Map: Hematology & Oncology per capita by county →

Medicare patients and services

Most frequent Medicare services, 2023
ServiceTimesPatients
Established patient office or other outpatient visit, 30-39 minutes249140
Established patient office or other outpatient visit, 20-29 minutes7370
New patient office or other outpatient visit, 45-59 minutes1717
Telephone medical discussion with physician, 11-20 minutes1613
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes1515

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
Eliquis (apixaban)
Other prescribers in Providence, RI
21
Acyclovir
Other prescribers in Providence, RI
18

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

Other Hematology & Oncology clinicians in Providence

Sources

NPI registry (CMS NPPES, November 2026; record last updated June 9, 2021), 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 1124382445. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.