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. 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 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 and procedures. Utilizing the latest medical advancements and evidence-based practices, Dr. Cowan empowers patients to confidently navigate their health journey, specializing in Glaucoma, and 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 as an 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 an Ophthalmologist like Dr. Cowan typically treat?
As an 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. Learn more about our claims-based healthcare methodology.
Also known as:
- Borderline Open-Angle Glaucoma
- Narrow Angle Glaucoma Risk
- Primary Open-Angle Glaucoma
- Glaucoma
- Early Open-Angle Glaucoma
- Open-angle glaucoma suspect
- Risk of Open-Angle Glaucoma
- Anatomical Narrow Angle
- Angle-Closure Glaucoma Risk
- Eye angle problem
- Chronic Open-Angle Glaucoma
- Wide-Angle Glaucoma
- POAG
ICD-10 Codes:
- H40013: Open angle with borderline findings, low risk, bilateral
- H40033: Anatomical narrow angle, bilateral
- H401132: Primary open-angle glaucoma, bilateral, moderate stage
- H401131: Primary open-angle glaucoma, bilateral, mild stage
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:
- Adenovirus Pink Eye
- Pink Eye
- Adenoviral Conjunctivitis
- Viral Pink Eye
- Adenovirus Eye Infection
ICD-10 Codes:
- B301: Conjunctivitis due to adenovirus
Also known as:
- Eyelid Disorder
- Eyelid Problems
- Eyelid Conditions
- Blepharitis
- Stye
ICD-10 Codes:
- H0289: Other specified disorders of eyelid
What procedures does an Ophthalmologist like Dr. Cowan typically perform?
As an Ophthalmologist, Dr. Cowan 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. 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. Learn more about our claims-based healthcare methodology.
Also known as:
- Laser Trabeculoplasty
- Laser Eye Surgery for Glaucoma
- Laser Surgery for Secondary Cataract
- Glaucoma laser surgery
- Laser eye treatment for glaucoma
- Trabeculoplasty
- Iridotomy
- Iridectomy
- Laser Glaucoma Treatment
- YAG Laser Capsulotomy
- Posterior Capsulotomy
- Secondary Cataract Removal
- Laser Eye Surgery
CPT Codes:
- 65855: Trabeculoplasty by laser surgery
- 66761: Iridotomy/iridectomy by laser surgery (eg, for glaucoma) (per session)
- 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:
- Removal of Object from Eye Surface
- Corneal Foreign Body Removal with Slit Lamp
- Conjunctival Foreign Body Removal
- Superficial Eye Foreign Body Extraction
- Eye Debris Removal
- Eye Foreign Object Removal
- Corneal Rust Ring Removal
- Slit Lamp Foreign Body Extraction
CPT Codes:
- 65205: Removal of foreign body, external eye; conjunctival superficial
- 65222: Removal of foreign body, external eye; corneal, with slit lamp
Also known as:
- Eyelid Lesion Removal
- Eyelid growth removal
- Eyelid bump excision
- Eyelid skin lesion surgery
CPT Codes:
- 67840: Excision of lesion of eyelid (except chalazion) without closure or with simple direct closure
Also known as:
- Eyelash Removal for Trichiasis
- Trichiasis Epilation
- Forceps Epilation of Eyelashes
- Ingrown Eyelash Removal
CPT Codes:
- 67820: Correction of trichiasis; epilation, by forceps only
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
Centene Corporation
Cigna Group
CVS Health (formerly Aetna)
Elevance Health Inc. (formerly Anthem)
EmblemHealth
Healthfirst New York
Medicare
Service Employees International Union (SEIU)
State of New York
UnitedHealth Group
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.
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. 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
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 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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Connect with DR. Cowan
4277 Hempstead Tpke Ste 109
Bethpage, NY 11714