Quick answers
- Which hospitals does Dong-Seok D. Lee work at?
- Medicare's official clinician data lists Dong-Seok D. Lee at 3 hospitals: Mount Sinai Beth Israel, Mount Sinai Hospital and Mount Sinai West. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Dong-Seok D. Lee see patients?
- Medicare's clinician data lists 5 practice locations, including New York, NY and Flushing, NY. Call before your visit to confirm the address.
- What is Dong-Seok D. Lee's specialty?
- Medicare lists Surgical Oncology as the primary specialty, and also Thoracic Surgery.
- Does Dong-Seok D. Lee accept Medicare assignment?
- Yes. Medicare's clinician data says Dong-Seok D. Lee 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 Dong-Seok D. Lee offer telehealth?
- Medicare's clinician data says Dong-Seok D. Lee offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Dong-Seok D. Lee?
- (212) 523-7475, as listed in official Medicare / NPI Registry data.
- What is Dong-Seok D. Lee's NPI number?
- 1730349085. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Dong-Seok D. Lee works
Medicare's Facility Affiliation Data lists Dong-Seok D. Lee 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 WestNew York, NY · Acute Care Hospital · CCN 330046
Practice locations
Addresses where Dong-Seok D. Lee is enrolled with Medicare (CMS data updated 2026-10-02).
- 1000 10th AveNew York, NY 10019 (212) 523‑7475
- 1190 5th Ave, Gp2wNew York, NY 10029 (212) 241‑5646
- 14004 58th RdFlushing, NY 11355 (212) 659‑6800
- 325 W 15th St, Cardiothoracic Surgery of Mt SinaiNew York, NY 10011 (212) 523‑7475
- 5 E 98th St, Cardiothoracic Surgery of Mount SinNew York, NY 10029 (212) 241‑5646
Group practices
Medicare enrollment lists Dong-Seok D. Lee 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
- Surgical Oncologyprimary
- Thoracic Surgeryalso
Other surgical oncologists in New York
Clinicians with the same Medicare primary specialty in New York, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2004 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1730349085 |
| 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