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Internal Medicine

William Zarowitz, MD

Works at hospitals in Greenwich, CT · White Plains, NY · Connecticut, New York

Summary

William Zarowitz, MD (Internal Medicine) is listed by Medicare at 2 hospitals in Greenwich, CT and White Plains, NY. NPI 1831161819. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about William Zarowitz, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Internal MedicinePrimary specialty
YesAccepts Medicare assignment
YesOffers telehealth
48Years since medical school (graduated 1978)
New York Medical CollegeMedical school
MaleGender (as listed)
White Plains Physician Services PCGroup practice

Quick answers

Which hospitals does William Zarowitz work at?
Medicare's official clinician data lists William Zarowitz at 2 hospitals: Greenwich Hospital Association - and White Plains Hospital Center. This is where the clinician works or has privileges; call the hospital to confirm.
Where does William Zarowitz see patients?
Medicare's clinician data lists 1 practice location in White Plains, NY. Call before your visit to confirm the address.
What is William Zarowitz's specialty?
Medicare lists Internal Medicine as the primary specialty.
Does William Zarowitz accept Medicare assignment?
Yes. Medicare's clinician data says William Zarowitz accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
Does William Zarowitz offer telehealth?
Medicare's clinician data says William Zarowitz offers telehealth services. Ask the office which visits can be done by video or phone.
What is the phone number for William Zarowitz?
(914) 328-8444, as listed in official Medicare / NPI Registry data.
What is William Zarowitz's NPI number?
1831161819. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where William Zarowitz works

Medicare's Facility Affiliation Data lists William Zarowitz at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where William Zarowitz is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists William Zarowitz as a member of this group (CMS data updated 2026-10-02).

  • White Plains Physician Services PC386 clinicians in the group

Specialties

Find other Internal Medicine doctors in New York →

Other internal medicine doctors in White Plains

Clinicians with the same Medicare primary specialty in White Plains, NY — not a recommendation.

All internal medicine doctors in White Plains →

Clinician information

CredentialMD
Medical schoolNew York Medical College
Graduation year1978
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1831161819
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians