31 Years of Experience
Accepting patients
Who is Dr. Cowan, Ophthalmologist in Bethpage, NY?
Dr. Gregory Cowan, MD is an Ophthalmologist, who primarily practices in Bethpage, NY. He has been practicing for over 31 years and is board certified by the American Board of Ophthalmology. Dr. Cowan completed his residency at Mount Sinai Medical Center. He is a member of the Medical Society of the State of New York and American Academy of Ophthalmology. Dr. Cowan is fluent in English and Spanish, and is currently seeing new patients. Dr. Cowan’s practice accepts Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Cowan’s office.
What are Areas of Expertise for Dr. Cowan?
Dr. Gregory Cowan, MD is a highly-rated, board-certified Ophthalmologist known for expertly diagnosing, treating, and managing a wide array of related conditions or procedures. Utilizing the latest medical advancements and evidence-based practices, Dr. Cowan empowers patients to confidently navigate their health journey, specializing in Glaucoma, or comprehensive wellness support. Serving the Bethpage/NY community, Dr. Cowan is dedicated to enhancing lives through expert, patient-centered care.
Where did Dr. Cowan go to medical school and complete their residency?
Residency: Mount Sinai Medical Center
Medical School: George Washington School Of Medicine | Columbia University | Hamilton College
Is Dr. Cowan board certified in Ophthalmologist?
Yes, Dr. Gregory Cowan, MD is board certified by the American Board of Ophthalmology since 1993
What languages does Dr. Cowan speak?
Dr. Cowan and their clinical team can communicate with patients in the following languages:
English
Spanish
What conditions does Dr. Cowan treat?
As a Ophthalmologist, Dr. Cowan 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. Cowan. 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.
Also known as:
- Borderline Open-Angle Glaucoma
- Primary Open-Angle Glaucoma
- Narrow Angle Glaucoma Risk
- Narrow-Angle Glaucoma
- Glaucoma
- Early Open-Angle Glaucoma
- Open-angle glaucoma suspect
- Risk of Open-Angle Glaucoma
- Chronic Open-Angle Glaucoma
- Wide-Angle Glaucoma
- POAG
- Anatomical Narrow Angle
- Angle-Closure Glaucoma Risk
- Eye angle problem
- Angle-Closure Glaucoma
- Acute Glaucoma
- Closed-Angle Glaucoma
ICD-10 Codes:
- H40013: Open angle with borderline findings, low risk, bilateral
- H401132: Primary open-angle glaucoma, bilateral, moderate stage
- H40033: Anatomical narrow angle, bilateral
- H401131: Primary open-angle glaucoma, bilateral, mild stage
- H401133: Primary open-angle glaucoma, bilateral, severe stage
- H401122: Primary open-angle glaucoma, left eye, moderate stage
- H40032: Anatomical narrow angle, left eye
- H40031: Anatomical narrow angle, right eye
Also known as:
- Cataract
- Cloudy lens
- Lens clouding
- Eye cloudiness
ICD-10 Codes:
- H2513: Age-related nuclear cataract, bilateral
Also known as:
- Strands and floaters in the eye's gel
- Eye Disease
- Eye floaters
- Vitreous opacities
- Vitreous membranes
ICD-10 Codes:
- H43393: Other vitreous opacities, bilateral
Also known as:
- Dry Eye Syndrome
- Corneal Disorder
- Dry Eye Disease
- Chronic Dry Eye
- Keratoconjunctivitis Sicca
ICD-10 Codes:
- H16223: Keratoconjunctivitis sicca, not specified as Sjogren's, bilateral
Also known as:
- Eyelid Disorder
- Chalazion
- Chalazion on Right Upper Eyelid
- Eyelid Problems
- Eyelid Conditions
- Blepharitis
- Stye
- Meibomian cyst
- Eyelid cyst
- Stye-like bump
- Right Upper Eyelid Cyst
- Meibomian Cyst on Upper Lid
- Blocked Gland Right Upper Eyelid
ICD-10 Codes:
- H0289: Other specified disorders of eyelid
- H0014: Chalazion left upper eyelid
- H0011: Chalazion right upper eyelid
- H0015: Chalazion left lower eyelid
Also known as:
- Pink Eye
- Adenovirus Pink Eye
- Conjunctivitis
- Red Eye
- Allergic Pink Eye
- Allergic Conjunctivitis
- Adenoviral Conjunctivitis
- Viral Pink Eye
- Adenovirus Eye Infection
ICD-10 Codes:
- H1045: Other chronic allergic conjunctivitis
- B301: Conjunctivitis due to adenovirus
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:
- Peripheral Retinal Degeneration
- Retinal Disorder
- Retinal Thinning
- Peripheral Retinal Disease
- Eye Degeneration
ICD-10 Codes:
- H3540: Unspecified peripheral retinal degeneration
Also known as:
- Dry Macular Degeneration
- Macular Degeneration
- Dry AMD
- Atrophic Macular Degeneration
- Age-related Macular Degeneration (Dry)
ICD-10 Codes:
- H353131: Nonexudative age-related macular degeneration, bilateral, early dry stage
Which procedures does Dr. Cowan perform as a Ophthalmologist?
As a Ophthalmologist, procedures performed by an Dr. Gregory Cowan may include:
- Cataract Removal
- Corneal Specialist Consultation
- Corneal Specialist Follow Up
- Dark Adaptometry
- Diabetes Care - Eye Exam
- Electro-oculography (EOG)
- Electroretinography (ERG)
- Eye Emergency Visit
For detailed information, please contact Dr. Cowan's office.
Does Dr. Cowan accept my insurance?
Dr. Cowan accepts most major insurance plans. Important: Please call our office at before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Cowan accept in Bethpage, NY?
Dr. Cowan in Bethpage, 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
Centene
CVS Health (formerly Aetna)
Elderplan
Elevance Health Inc. (formerly Anthem)
EmblemHealth
Medicare
Service Employees International Union (SEIU)
State of New York
UnitedHealthcare
View All Insurances
Where is Dr. Cowan's office located?
Ratings & Reviews
5.0
Overall rating
Based on 51 reviews
Office Experience
95% of patients found the doctor and staff friendly and the office clean and modern
Attentiveness
98% of patients felt that their time spent with the doctor was meaningful and impactful and that any follow ups were addressed quickly
Wait Times
64% of patients were satisfied with the wait time
Appointment Booking
96% of patients found it easy to book an appointment
Patients give Dr. Gregory Cowan an Excellent overall experience rating of 5 out of 5 stars. Dr. Cowan has been rated and reviewed by 51 patients. These ratings are based on a variety of factors, including the amount of time patients spent with Dr. Cowan, his bedside manner, appointment waiting time, friendliness of the office staff, clarity of diagnosis, and more.
Read Patient ReviewsRecognitions
Memberships & Associations
Medical Society of the State of New York
Member
American Academy of Ophthalmology
Fellow
What is Dr. Cowan's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Cowan's National Provider Identifier (NPI) number is 1275640716.
What common questions do patients ask about Dr. Cowan?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Cowan
What is Dr. Gregory Cowan's specialty?
Dr. Cowan is a Ophthalmologist near Bethpage, NY. 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. Contact Dr. Cowan to book an appointment today.
Is this Dr. Gregory Cowan affiliated with a ranked Castle Connolly Top Hospital?
No, Cowan is not affiliated with a Castle Connolly Top Hospital, but is affiliated with the following hospitals: St. Joseph Hospital - Bethpage, NY. Castle Connolly Top Hospitals 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
Where can I learn more about Ophthalmologist?
Explore Ophthalmologist with 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 Gregory Cowan accepting new patients in Bethpage, NY?
Yes, Dr. Gregory Cowan is accepting new patients at this time.
Does Dr. Gregory Cowan offer online booking?
Please contact Dr. Cowan's office for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Gregory Cowan?
Please contact Dr. Cowan's office for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. Gregory Cowan have?
Dr. Gregory Cowan is certified by the American Board of Ophthalmology.
Other Ophthalmologist Near Bethpage, NY
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Bethpage, NY
Accepting patientsDr. Ted Karl, MD is an Ophthalmologist, who primarily practices in Bethpage, NY. He has been practicing for over 41 years and is board certified by the American Board of Ophthalmology.
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Accepting patientsDr. Laurence Rubin, MD is an Ophthalmologist, who primarily practices in Bethpage, NY. He is board certified by the American Board of Ophthalmology.
Bethpage, NY
Connect with DR. Cowan
4277 Hempstead Tpke Ste 109
Bethpage, NY 11714