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Dr. Katherine Ni sees patients in Long Island City, Queens as a gastroenterologist with Icahn School of Medicine at Mount Sinai.
Dr. Ni earned her medical degree at New York University School of Medicine in 2018 — 8 years ago.
The office is at 2520 30th Ave, Long Island City, NY 11102; the phone number on record is (212) 241-0034. A second listed location: 5 E 98th St Box 1104, New York, NY 10029. Icahn School of Medicine at Mount Sinai is a large group — 2843 clinicians are enrolled with Medicare under it. For Medicare patients: Dr. Ni accepts assignment.
Dr. Ni is affiliated with Mount Sinai Hospital.
Have you been a patient of Dr. Ni? A short, fair review — what went well, what didn't — helps the next person choosing a gastroenterologist in Long Island City, Queens.
Dr. Ni at a glance
- Specialty
- Gastroenterologist
- Credentials
- MD
- Practice
- Icahn School of Medicine at Mount Sinai
- Address
- 2520 30th Ave, Long Island City, NY 11102
- Phone
- (212) 241-0034
- Other locations
- 5 E 98th St Box 1104, New York, NY 10029
- Medical school
- New York University School of Medicine (2018)
- Hospital affiliations
- Mount Sinai Hospital
- Medicare assignment
- Accepts
- NPI number
- 1063916062
- NY license no.
- 322134
Medicare, Medicaid and hospitals
- Medicare patients (2024)
- 43 people with traditional Medicare, average age 68
- Procedures on Medicare Care Compare
- Colonoscopy 16 procedures
- Upper gastrointestinal (GI) endoscopy for acid reflux 1–10 procedures
- New York Medicaid
- Enrolled fee-for-service provider since 2024. Medicaid managed-care plans keep their own networks, so check with your plan.
- Hospital pages
- Mount Sinai Hospital
Medicare figures cover people with traditional (fee-for-service) Medicare only; services billed for fewer than 11 patients are not published.
Comparing gastroenterologists? See 53 in Queens or 303 across New York City.
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Dr. Ari M. Grinspan, MDGastroenterologist · Icahn School of Medicine at Mount SinaiNo reviews yetAstoria, NY
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Frequently Asked Questions
With Icahn School of Medicine at Mount Sinai, at 2520 30th Ave, Long Island City, NY 11102.
Call the office at (212) 241-0034.
Yes — Dr. Ni accepts Medicare assignment, taking the Medicare-approved amount as full payment for covered services.
Mount Sinai Hospital.
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