Primary Care - Long Beach - Mount Sinai South Nassau
Primary Care • Long Beach, NY • Since 1928 • 1 (Long Beach) locations
About
Mount Sinai South Nassau (formerly South Nassau Communities Hospital) is a nonprofit, acute-care teaching hospital in Oceanside, NY, with a strong presence in Long Beach. It is part of Mount Sinai Health System and offers comprehensive medical services, including emergency care, cardiology, oncology, orthopedics, bariatrics, and radiation/radiosurgery (Novalis Tx and Gamma Knife Perfexion). The hospital serves the Long Beach area with outpatient centers and multiple locations nearby. It is designated as a Stroke Center and a Comprehensive Community Cancer Center, and operates as an Equal Opportunity Employer. Key contact: info@southnassau.org; main phone: 516-632-3000.
Clinic Type
Primary Care
Address
761 Franklin Boulevard, Long Beach, NY 11561
Phone
516-544-2351
info@snch.org
Opening Hours
Monday–Friday: 9am – 5pm
Services Offered
Technology & Equipment
Insurance & Payment
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We are an approved provider for most major insurance plans. If uninsured, programs exist to assist with reduced-rate care and facilitated-insurance enrollment.
Languages Spoken
FAQs
What are the hours?
Office Hours: Monday–Friday 9am–5pm.
No Insurance?
At Mount Sinai South Nassau - Long Beach, Primary Care, we offer quality health care you can afford. We are an approved provider for most major insurance plans. But if you do not have insurance, we have programs for eligible patients that assist with reduced-rate care based on your ability to pay, as well as connections to facilitated-insurance enrollment programs.
Social Media
Photos







What Patients Say
Overall sentiment across review platforms: mixed
- Birdeye (Family Medicine): 2.2/5 (77 reviews)
- Birdeye (Long Beach Emergency Department): 3.3/5 (12 reviews)
- Yahoo Local (Mount Sinai South Nassau/General): 2.0/5 (178 reviews)
Patients praise
- Praise for specific doctors' bedside manners and caring demeanor
- Effective communication with patients by some providers
- Appreciation for clean and modern facilities
- Positive experiences with emergency room staff in certain cases
Common complaints
- Long wait times
- Dissatisfaction with billing and administrative processes
- Concerns regarding clinical accuracy and diagnostic thoroughness
- Inconsistent bedside manner among some staff members
"Dr Rehm and her staff are exceptional. Communication between the group and me is awesome, especially through the app. Dr Rehm gets right back to you."
— LocalityBiz Review"Subject: Formal Complaint – Inaccurate Blood Pressure Readings, Excessive Wait Times, and Declining Trust in Care... I have experienced repeated issues that raise serious concerns about both clinical accuracy and patient care standards."
— Birdeye Review"A few days ago I had the unfortunate experience of having to be rushed to the emergency room at this hospital. I have nothing but praise for the emergency room staff of doctors and nurses."
— Yahoo Local ReviewSynthesized from public review platforms as of Jul 11, 2026 — sources: [1][2][3][4].
In the News
- Mount Sinai South Nassau Screens And Teaches Over 600 At Boardwalk Health Fair | Long Beach, NY Patch — Jun 26, 2026
- Hundreds attend Mount Sinai South Nassau’s annual Boardwalk Health Fair in Long Beach | Herald Community Newspapers | www.liherald.com — Jul 11, 2025
- Dr. Nissim E. Levy, MD - Internal Medicine Physician in Oceanside, NY — May 14, 2026
- Long Beach Lifeguards receive fresh support from Mount Sinai South Nassau | Herald Community Newspapers | www.liherald.com — Jul 3, 2026
- Mount Sinai South Nassau Hospital to open new $70 million center in Wantagh — Aug 1, 2025
Information sourced from the clinic's website as of July 11, 2026.
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