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Dr. Marc Dinowitz, MD

Port Jefferson, NY

27 Years of Experience

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Dinowitz, Ophthalmologist in Port Jefferson, NY?

    Dr. Marc Dinowitz, MD is an Ophthalmologist, who primarily practices in Port Jefferson, NY with 2 additional practice locations. He has been practicing for over 27 years and is board certified. Dr. Dinowitz graduated from State University of New York at Stony Brook and completed his residency at UMDNJ / Univ. of Med/Dent New Jersey. Dr. Dinowitz is fluent in English and Spanish, and is currently seeing new patients. Dr. Dinowitz’s practice accepts Medicaid, Medicare, Cigna, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Dinowitz’s office at (631) 369-0777.

    What are Areas of Expertise for Dr. Dinowitz?

    Dr. Marc Dinowitz, MD is a highly-rated, board-certified Ophthalmologist known for expertly diagnosing, treating, and managing a wide array of related conditions and procedures. Utilizing the latest medical advancements and evidence-based practices, Dr. Dinowitz empowers patients to confidently navigate their health journey, specializing in Cataract Surgery, Corneal Disease, LASIK-Refractive Surgery, and comprehensive wellness support. Serving the Port Jefferson, NY community, Dr. Dinowitz is dedicated to enhancing lives through expert, patient-centered care.

    Where did Dr. Dinowitz go to medical school and complete their residency?

    • Fellowship: Johns Hopkins University School of Medicine

    • Residency: UMDNJ / Univ. of Med/Dent New Jersey

    • Medical School: State University of New York at Stony Brook

    Is Dr. Dinowitz board certified as an Ophthalmologist?

    Yes, Dr. Marc Dinowitz, MD is board certified by the American Board of Ophthalmology

    What languages does Dr. Dinowitz speak?

    Dr. Dinowitz and their clinical team can communicate with patients in the following languages:

    • English

    • Spanish

    What conditions does an Ophthalmologist like Dr. Dinowitz typically treat?

    As an Ophthalmologist, Dr. Dinowitz diagnoses, treats, and manages a wide range of conditions. This condition information is derived from anonymized insurance claims and highlights the medical conditions most commonly treated by Dr. Dinowitz. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly. Learn more about our claims-based healthcare methodology.

    Also known as:

    • Cataract
    • Cloudy lens
    • Lens clouding
    • Eye cloudiness

    ICD-10 Codes:

    • H2511: Age-related nuclear cataract, right eye
    • H2512: Age-related nuclear cataract, left eye
    • H2513: Age-related nuclear cataract, bilateral

    Also known as:

    • Borderline Open-Angle Glaucoma
    • Primary Open-Angle Glaucoma
    • Glaucoma
    • Early Open-Angle Glaucoma
    • Open-angle glaucoma suspect
    • Risk of Open-Angle Glaucoma
    • Chronic Open-Angle Glaucoma
    • Wide-Angle Glaucoma
    • POAG

    ICD-10 Codes:

    • H40013: Open angle with borderline findings, low risk, bilateral
    • H401132: Primary open-angle glaucoma, bilateral, moderate stage
    • H401131: Primary open-angle glaucoma, bilateral, mild stage

    Also known as:

    • Type 2 Diabetes
    • Diabetes Type 2
    • Type 2 diabetes
    • Diabetes Mellitus Type 2
    • Adult-Onset Diabetes
    • Non-Insulin Dependent Diabetes

    ICD-10 Codes:

    • E119: Type 2 diabetes mellitus without complications

    Also known as:

    • Dry Eyes
    • Tears
    • Dry eye syndrome
    • Keratoconjunctivitis sicca
    • Ocular dryness

    ICD-10 Codes:

    • H04123: Dry eye syndrome of bilateral lacrimal glands

    What procedures does an Ophthalmologist like Dr. Dinowitz typically perform?

    As an Ophthalmologist, Dr. Dinowitz performs a variety of medical procedures. This procedure information is derived from anonymized insurance claims and highlights the medical procedures most commonly performed by Dr. Dinowitz. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly. Learn more about our claims-based healthcare methodology.

    Also known as:

    • Cataract Removal with Lens Implant
    • Extracapsular cataract extraction
    • Phacoemulsification
    • IOL implantation

    CPT Codes:

    • 66984: Extracapsular cataract removal with insertion of intraocular lens prosthesis (1 stage procedure), manual or mechanical technique (eg, irrigation and aspiration or phacoemulsification); without endoscopic cyclophotocoagulation

    Also known as:

    • Laser Surgery for Secondary Cataract
    • YAG Laser Capsulotomy
    • Posterior Capsulotomy
    • Secondary Cataract Removal
    • Laser Eye Surgery

    CPT Codes:

    • 66821: Discission of secondary membranous cataract (opacified posterior lens capsule and/or anterior hyaloid); laser surgery (eg, YAG laser) (1 or more stages)

    Also known as:

    • Complex Cataract Removal with Lens Implant
    • Advanced Cataract Surgery
    • Phacoemulsification with IOL
    • Complex Extracapsular Cataract Extraction

    CPT Codes:

    • 66982: Extracapsular cataract removal with insertion of intraocular lens prosthesis (1-stage procedure), manual or mechanical technique (eg, irrigation and aspiration or phacoemulsification), complex, requiring devices or techniques not generally used in routine cataract surgery (eg, iris expansion device, suture support for intraocular lens, or primary posterior capsulorrhexis) or performed on patients in the amblyogenic developmental stage; without endoscopic cyclophotocoagulation

    Does Dr. Dinowitz accept my insurance?

    Dr. Dinowitz accepts most major insurance plans. Important: Please call our office at (631) 369-0777 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Dinowitz accept in Port Jefferson, NY?

    Dr. Dinowitz in Port Jefferson, NY accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.

    Top Insurances

    • All Other Third Party

    • Cigna Group

    • Corporate Services

    • CVS Health (formerly Aetna)

    • Medicaid

    • Medicare

    • Service Employees International Union (SEIU)

    • Truman Medical Centers

    • UnitedHealth Group

    • Unknown

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    Where is Dr. Dinowitz's office located?

    Dr. Marc Dinowitz's Primary Practice

    75 N Country Rd

    Port Jefferson, NY 11777

    (631) 369-0777

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    C/O East End Eye A Division Of Prohealth Care Asso

    937 E Main St

    Riverhead, NY 11901

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    Dr. Marc Dinowitz's Practice 3

    1 Heroes Way

    Riverhead, NY 11901

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    What is Dr. Dinowitz's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.

    Dr. Dinowitz's National Provider Identifier (NPI) number is 1578582466.

    What common questions do patients ask about Dr. Dinowitz?

    Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Dinowitz

    What is Dr. Marc Dinowitz's specialty?

    Dr. Dinowitz is a Ophthalmologist near Port Jefferson, NY.

    What does an Ophthalmologist do?

    An ophthalmologist possesses the knowledge and professional skills required to deliver comprehensive eye and vision care. These medical doctors are trained to diagnose, monitor, and treat all ocular and visual disorders, whether through medical or surgical interventions. Their expertise encompasses a wide range of issues affecting the eye and its structures, including the eyelids, orbit, and visual pathways. Additionally, ophthalmologists prescribe vision services, such as glasses and contact lenses, to help patients achieve optimal visual health.

    Is this Dr. Marc Dinowitz affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Dinowitz is affiliated with Peconic Bay Medical Center which is a Castle Connolly Top Hospital. Castle Connolly Top Hospitals are healthcare institutions recognized for their excellence in specific medical procedures and overall patient care. They are identified through a rigorous peer nomination process, evaluating factors like patient outcomes, quality of care, and expertise. The list recognizes hospitals that excel in 20 or more specific medical procedures, representing the top 25% nationwide. Castle Connolly Top Hospitals

    When to see an Ophthalmologist?: Guides for symptoms, conditions, and treatments

    Understand your symptoms and know when it’s time to see an Ophthalmologist. Explore insights from trusted medical experts on EverydayHealth.com, where you'll find the most relevant content and helpful condition guides for up-to date information about symptoms, causes, diagnosis, treatment and more. See all our health guides to find trusted information on medical conditions from our experts at Everyday Health.

    Is Marc Dinowitz accepting new patients in Port Jefferson, NY?

    Yes, Dr. Marc Dinowitz is accepting new patients at this time.

    Does Dr. Marc Dinowitz offer online booking?

    Please contact Dr. Dinowitz's office at (631) 369-0777 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with Marc Dinowitz?

    Please contact Dr. Dinowitz's office at (631) 369-0777 for information regarding telehealth appointment availability or for scheduling assistance.

    Which board certifications does Dr. Marc Dinowitz have?

    Dr. Marc Dinowitz is certified by the American Board of Ophthalmology.

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