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Dr. John F. Zwetchkenbaum, M.D.

Allergy & Immunology (Allergy Physician)

1056 Hope St
Providence, RI 02906

Who else practices at this address →

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

Call (401) 751-1235

  • Medicare participating

At a glance

Years since graduation
41
In the NPI registry since
2005
Medicare patients seen, 2024
245

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

  • 1985Medical school: Boston University School of Medicine
  • 2005Registered 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

  • Allergy Physician primary
    RI license MD07704

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

Map: Allergy & Immunology 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
245
Services billed
9,376
Patients’ average age
72
Most frequent Medicare services, 2023
ServiceTimesPatients
Test for allergy using allergenic extract5,12879
Test for allergy using skin patch1,47118
Test for allergy using allergenic extract injected into skin1,18662
Professional service for multiple injections of allergen57738
Professional service for preparation and provision of 1 or more antigens40536
Established patient office or other outpatient visit, 20-29 minutes170133
Test to measure expiratory airflow and volume11881
Professional service for single injection of allergen7713
Established patient office or other outpatient visit, 30-39 minutes4237
New patient office or other outpatient visit, 30-44 minutes3939

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, 11 companies reported 23 payments worth $590 in total to this clinician.

By company
GlaxoSmithKline, LLC.$261
Novartis Pharmaceuticals Corporation$74.31
Ars Pharmaceuticals Operations, Inc.$47.49
Csl Behring$33.99
Pfizer Inc.$30.17
Takeda Pharmaceuticals U.S.A., Inc.$29.45
Paratek Pharmaceuticals, Inc.$27.21
Organon LLC$24.99
By type
Food and Beverage$590

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 Rhode Island →

Industry-funded research

Named as a principal investigator on 7 industry-funded studies in 2025, from 4 companies. The companies reported $176,897 in research payments for these studies, mostly to the institutions running them.

  • A phase 3, 24-week, randomized, double-blind, placebo-controlled, para
    GlaxoSmithKline, LLC.
  • A multicentre, randomized, double-blind, placebo-controlled, dose find
    GlaxoSmithKline, LLC.
  • BRISOTE A Multicentre Randomised DoubleBlind Parallel Group ActiveControlled Phase 3b Study to Evaluate the Efficacy and Safety of Benralizumab 30 mg SC in Eosinophilic Asthma Patients Uncontrolled on Medium Dose Inha…
    AstraZeneca UK Limited
  • A randomized, single-dose, double-blind, placebo-controlled, four-way crossover, multicenter bronchoprovocation study comparing the bronchoprotective effects of albuterol sulfate inhalation aerosol (90 mcg, invagen/ci…
    Cipla USA Inc.
  • A prospective, real-world, interventional study to evaluate the effect
    GlaxoSmithKline, LLC.
  • Screening Study for KIT D816V Mutated Mast Cell Disease in Select Populations
    Sanofi US Services Inc. · Recruiting · NCT07143669
  • A phase 3, 52-week, randomized, double-blind, placebo-controlled, para
    GlaxoSmithKline, LLC.

From CMS Open Payments research payments, where companies name up to five principal investigators per payment. Research payments usually go to hospitals, universities and research sites, not to the investigator personally. A payment is not evidence of wrongdoing.

Other Allergy & Immunology clinicians in Providence

Sources

NPI registry (CMS NPPES, November 2026; record last updated February 21, 2008), 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 1124027552. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.