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Dr. Alexandra C. Marcy is a family medicine physician in Oceanside, New York, practicing with Mount Sinai School of Medicine.
Practice details
- Specialty
- Family medicine physician
- Credentials
- MD
- Practice
- Mount Sinai School of Medicine
- Address
- 1 Healthy Way, Oceanside, NY 11572
- Phone
- (877) 768-8462
- Medical school
- New York Medical College (2021)
- Hospital affiliations
- Mount Sinai South Nassau
- Medicare assignment
- Accepts
- NPI number
- 1992381370
- NY license no.
- 336797
Medical school: New York Medical College, class of 2021.
You'll find Dr. Marcy at 1 Healthy Way, Oceanside, NY 11572. Call (877) 768-8462 to schedule. 148 clinicians bill Medicare through Mount Sinai School of Medicine, so it is a large group practice rather than a solo office. She accepts Medicare assignment — useful to know if you are on traditional Medicare.
Dr. Marcy is affiliated with Mount Sinai South Nassau.
Reviews here come only from patients. If you've seen Dr. Marcy, add yours.
Medicare, Medicaid and hospitals
- New York Medicaid
- Enrolled fee-for-service provider since 2025. Medicaid managed-care plans keep their own networks, so check with your plan.
- Hospital pages
- Mount Sinai South Nassau
Comparing family doctors? See 4 in Oceanside or 254 across Long Island.
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Frequently Asked Questions
With Mount Sinai School of Medicine, at 1 Healthy Way, Oceanside, NY 11572.
Call the office at (877) 768-8462.
Yes — Dr. Marcy accepts Medicare assignment, taking the Medicare-approved amount as full payment for covered services.
Mount Sinai South Nassau.
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