Quick answers
- Which hospitals does Sergey Koyfman work at?
- Medicare's official clinician data lists Sergey Koyfman at 5 hospitals: Garnet Health Medical Center, Garnet Health Medical Center Catskills, Montefiore St Luke's Cornwall, St Anthony Community Hospital and Vassar Brothers Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Sergey Koyfman see patients?
- Medicare's clinician data lists 3 practice locations, including Yonkers, NY, New Windsor, NY and Middletown, NY. Call before your visit to confirm the address.
- What is Sergey Koyfman's specialty?
- Medicare lists Otolaryngology as the primary specialty.
- Does Sergey Koyfman accept Medicare assignment?
- Yes. Medicare's clinician data says Sergey Koyfman 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 Sergey Koyfman offer telehealth?
- Medicare's clinician data says Sergey Koyfman offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Sergey Koyfman?
- (914) 963-8588, as listed in official Medicare / NPI Registry data.
- What is Sergey Koyfman's NPI number?
- 1114067501. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Sergey Koyfman works
Medicare's Facility Affiliation Data lists Sergey Koyfman at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Garnet Health Medical CenterMiddletown, NY · Acute Care Hospital · CCN 330126
- Garnet Health Medical Center CatskillsHarris, NY · Acute Care Hospital · CCN 330386
- Montefiore St Luke's CornwallNewburgh, NY · Acute Care Hospital · CCN 330264
- St Anthony Community HospitalWarwick, NY · Acute Care Hospital · CCN 330205
- Vassar Brothers Medical CenterPoughkeepsie, NY · Acute Care Hospital · CCN 330023
Practice locations
Addresses where Sergey Koyfman is enrolled with Medicare (CMS data updated 2026-10-02).
- 1086 N Broadway, Suite 220Yonkers, NY 10701 (914) 963‑8588
- 4 Crotty LnNew Windsor, NY 12553 (845) 562‑0760
- 75 Crystal Run Rd, Suite 220Middletown, NY 10941 (845) 467‑6998
Group practices
Medicare enrollment lists Sergey Koyfman as a member of this group (CMS data updated 2026-10-02).
- Ent and Allergy Associates LLP432 clinicians in the group
Specialties
- Otolaryngologyprimary
Other ENT doctors in Yonkers
Clinicians with the same Medicare primary specialty in Yonkers, NY — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | New York College Of Osteo Medicine Of New York Institute Of Technology |
| Graduation year | 2001 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1114067501 |
| 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