Quick answers
- Which hospitals does Ujjwal Kumar work at?
- Medicare's official clinician data lists Ujjwal Kumar at 3 hospitals: Good Samaritan Hospital Medical Center, St Catherine of Siena Hospital and St Charles Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Ujjwal Kumar see patients?
- Medicare's clinician data lists 1 practice location in Smithtown, NY. Call before your visit to confirm the address.
- What is Ujjwal Kumar's specialty?
- Medicare lists Gastroenterology as the primary specialty.
- Does Ujjwal Kumar accept Medicare assignment?
- Yes. Medicare's clinician data says Ujjwal Kumar 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 Ujjwal Kumar offer telehealth?
- Medicare's clinician data says Ujjwal Kumar offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Ujjwal Kumar?
- (631) 862-3000, as listed in official Medicare / NPI Registry data.
- What is Ujjwal Kumar's NPI number?
- 1235570805. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Ujjwal Kumar works
Medicare's Facility Affiliation Data lists Ujjwal Kumar at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Good Samaritan Hospital Medical CenterWest Islip, NY · Acute Care Hospital · CCN 330286
- St Catherine of Siena HospitalSmithtown, NY · Acute Care Hospital · CCN 330401
- St Charles HospitalPort Jefferson, NY · Acute Care Hospital · CCN 330246
Practice locations
Addresses where Ujjwal Kumar is enrolled with Medicare (CMS data updated 2026-10-02).
- 50 Route 25aSmithtown, NY 11787 (631) 862‑3000
Group practices
Medicare enrollment lists Ujjwal Kumar as a member of this group (CMS data updated 2026-10-02).
- CHS Physician Partners PC743 clinicians in the group
Specialties
- Gastroenterologyprimary
Other gastroenterologists in Smithtown
Clinicians with the same Medicare primary specialty in Smithtown, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2007 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1235570805 |
| 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