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About

Orthopaedic Associates of Manhasset (OA Manhasset) is a privately held medical practice specializing in orthopedic care, with its headquarters in Great Neck, NY. Key details: - Services: Urgent orthopedic care with same-day appointments; physical and occupational therapy. - Locations: 5 offices including Great Neck HQ at 600 Northern Blvd (Great Neck, NY 11021) and additional sites in Huntington, Hicksville, and nearby Great Neck addresses. - Contact: Main phone lines include (516) 627-8717 and (516) 365-1634. - Founded: 1971; Industry: Medical Practices; NAICS/SIC codes align with medical services. - Resources: Active presence with a LinkedIn profile; multiple office locations facilitate access to orthopedic care in the Great Neck area. If you’re looking for same-day orthopedic care or nearby clinics in Great Neck, OA Manhasset provides urgent ortho services and therapy across its Great Neck and neighboring offices.

Clinic Type

Orthopedics

Address

600 Northern Blvd., Suite 300, Great Neck, NY 11021

Phone

516-627-8717

Email

surprisemedicalbills@dfs.ny.gov

Opening Hours

Monday – Friday 8:30 am – 5:00 pm (Physician Office) | Monday – Friday 7:30 am – 7:00 pm (Physical Therapy) | Saturday 8:00 am – 2:30 pm (Urgent Ortho Care) | After-Hours Walk-In Care: Saturday – Sunday 12:00 – 4:00 pm

Services Offered

  • Urgent Ortho Care
  • Physical and Occupational Therapy
  • MRI
  • X-ray
  • Nerve Conduction Studies and Electromyography (EMG)
  • Ultrasound Guided Injections
  • Orthobiologics
  • Workers' Compensation and Personal Injury
  • Online Scheduling

Team

  • Bruce Seideman, MD — Physician

Insurance & Payment

Online Scheduling

Languages Spoken

FAQs

What are the Urgent Ortho Care hours?

Same-Day Appointments Monday – Friday | 8:30 am – 5:00 pm. After-Hours Walk-In Care Saturday – Sunday | 12:00 – 4:00 pm.

Where are the suites located relevant to care?

Physician Office in Suite 300, Physical Therapy and Occupational Therapy in Suite 311, MRI in Suite 116.

Photos

What Patients Say

Overall sentiment across review platforms: mixed

  • Birdeye (Google rating shown): 4.8 (183 reviews (listed))
  • WebMD (ratings & reviews summary): Not stated in snippet (5 ratings shown) (5 reviews (as shown))
  • Yelp (Great Neck location): Not stated in snippet (Not stated in snippet)
  • Healthgrades (Great Neck): Not stated in snippet (Not stated in snippet)

Patients praise

  • Helpful/kind doctors and good communication (patients say doctors explain clearly and are kind)
  • Friendly, professional, and efficient staff; good office experience
  • Short wait times and easy appointment scheduling (as described in reviews)

Common complaints

  • Reports of very poor experiences including staff incompetence and billing/fraud/double-billing allegations (severe negative review)

"“Each and every visit has been amazing!... Karen Eisenberg always has a smile... professional, friendly and efficient...”"

Birdeye reviews snippet

"“Cassidy is patient and kind and answers questions.”"

WebMD practice page (ratings & reviews snippet)

"“Highly recommend. Thorough, good communication, friendly, effective.”"

Zocdoc listing snippet

Synthesized from public review platforms as of Jul 11, 2026 — sources: [1][2][3][4].

Information sourced from the clinic's website as of July 11, 2026.

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