Quick answers
- Which hospitals does William Whang work at?
- Medicare's official clinician data lists William Whang at 5 hospitals: Mount Sinai Beth Israel, Mount Sinai Hospital, Mount Sinai South Nassau, Mount Sinai West and NYU Langone Hospitals. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does William Whang see patients?
- Medicare's clinician data lists 4 practice locations, including New York, NY and Oceanside, NY. Call before your visit to confirm the address.
- What is William Whang's specialty?
- Medicare lists Cardiac Electrophysiology as the primary specialty, and also Cardiovascular Disease (Cardiology).
- Does William Whang accept Medicare assignment?
- Yes. Medicare's clinician data says William Whang 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 Whang offer telehealth?
- Medicare's clinician data says William Whang offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for William Whang?
- (212) 731-7822, as listed in official Medicare / NPI Registry data.
- What is William Whang's NPI number?
- 1972586964. 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 Whang works
Medicare's Facility Affiliation Data lists William Whang at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Mount Sinai Beth IsraelNew York, NY · Acute Care Hospital · closed, according to its website · CCN 330169
- Mount Sinai HospitalNew York, NY · Acute Care Hospital · CCN 330024
- Mount Sinai South NassauOceanside, NY · Acute Care Hospital · CCN 330198
- Mount Sinai WestNew York, NY · Acute Care Hospital · CCN 330046
- NYU Langone HospitalsNew York, NY · Acute Care Hospital · CCN 330214
Practice locations
Addresses where William Whang is enrolled with Medicare (CMS data updated 2026-10-02).
- 1 Gustave L Levy PlNew York, NY 10029 (212) 731‑7822
- 1 Healthy WayOceanside, NY 11572 (212) 241‑1382
- 1111 Amsterdam AveNew York, NY 10025 (212) 420‑3581
- 177 E 87th StNew York, NY 10128 (212) 744‑2345
Group practices
Medicare enrollment lists William Whang as a member of this group (CMS data updated 2026-10-02).
- Icahn School of Medicine at Mount Sinai2,843 clinicians in the group
Specialties
Other cardiac electrophysiologists in New York
Clinicians with the same Medicare primary specialty in New York, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Columbia University College Of Physicians And Surgeons |
| Graduation year | 1998 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1972586964 |
| Corrections | Report 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians