Quick answers
- Which hospitals does Melissa W. Sum work at?
- Medicare's official clinician data lists Melissa W. Sum at 1 hospital: NYU Langone Hospitals. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Melissa W. Sum see patients?
- Medicare's clinician data lists 1 practice location in New York, NY. Call before your visit to confirm the address.
- What is Melissa W. Sum's specialty?
- Medicare lists Endocrinology as the primary specialty.
- Does Melissa W. Sum accept Medicare assignment?
- Medicare's clinician data says Melissa W. Sum may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- Does Melissa W. Sum offer telehealth?
- Medicare's clinician data says Melissa W. Sum offers telehealth services. Ask the office which visits can be done by video or phone.
- What is Melissa W. Sum's NPI number?
- 1326369703. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Melissa W. Sum works
Medicare's Facility Affiliation Data lists Melissa W. Sum at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- NYU Langone HospitalsNew York, NY · Acute Care Hospital · CCN 330214
Practice locations
Addresses where Melissa W. Sum is enrolled with Medicare (CMS data updated 2026-10-02).
- 14 Wall St, Fl 9New York, NY 10005
Specialties
- Endocrinologyprimary
Other endocrinologists 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 | 2010 |
| Gender (as listed) | Female |
| Medicare assignment | May accept for some services |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1326369703 |
| 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