Melissa W Sum, MD
Endocrinology (CMS) · New York, NY
At a glance
902 Broadway Ste 1603, New York, NY 10010-6029
NPPES record updated Apr 23, 2026. Public records can lag behind changes at a practice.
Before you call: a quick checklist
- Are you accepting new patients?
- Do you accept my specific insurance plan?
- Do you provide the service I need at this address?
- Do I need a referral, and what is the earliest appointment?
Insurance participation and appointment availability are not established by these public records.
Medicare & insurance
This clinician has a currently effective opt-out record in the imported CMS file. Ask the practice about payment arrangements before booking.
- Effective Feb 23, 2026 through Feb 23, 2028
Source: Opt Out Affidavits : 2026-08-01 · Reporting period: 2026-08-01 to 2026-08-31 · Published Sep 21, 2026.
How to check your coverage
Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.
Check the official Medicare directory ↗Practice location
902 Broadway Ste 1603New York, NY 10010-6029
Education & affiliations
- Medical / professional school
- Columbia University College Of Physicians And Surgeons
- Graduation year
- 2010
- CMS specialties
- Endocrinology
CMS reports telehealth services for this clinician. Confirm current services and availability with the practice.
Reported hospital affiliations
- Nyu Langone Hospitals New York, NY
Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.
Source: CMS National Downloadable File · Published Oct 15, 2026.
Source: CMS Facility Affiliation Data · Published Oct 15, 2026.
Procedures in the public data
Reported activity can help you ask more informed questions about a practice’s services.
No displayed procedure-category record in this release. This does not mean the clinician performs no procedures.
CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology
Source: CMS Utilization Data · Published Oct 15, 2026.
Find providers with a similar service mix
Compare 2024 published Medicare activity in the same reported specialty, here or in another city.
Industry-reported general payments
No matching general-payment summary in the imported release. This is not a verified zero and does not rule out other payment types or years.
Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.
Professional details: NPI, taxonomy & registry record
Registry details
- Primary taxonomy
- Endocrinology (CMS)
- Taxonomy code
- 207RE0101X
- Enumeration date
- Jun 19, 2010
- Record updated
- Apr 23, 2026
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- MD
Reported taxonomies and licenses
207RE0101X · Primary
License reported: 274990 NY
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
902 Broadway Ste 1603New York, NY 10010-6029
- Phone
- (212) 379-4920
- Fax
- (212) 379-4923
Mailing address
902 BROADWAY STE 1603NEW YORK, NY 100106029
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
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