Accepting patients
Who is Dr. Gaster, Ophthalmologist in Fountain Valley, CA?
Dr. Ronald Gaster, MD is an Ophthalmologist, who primarily practices in Fountain Valley, CA with 2 additional practice locations. He is board certified by the American Board of Ophthalmology. Dr. Gaster completed his residency at Kings County Hosp Ctr, Ophthalmology; Univ Of Chicago Hosps, Ophthalmology; Univ Ca San Diego Med Ctr, General Surgery. Dr. Gaster is fluent in English and Spanish, and is currently seeing new patients. Dr. Gaster’s practice accepts Cigna, Medicaid, Medicare, UnitedHealthcare, Aetna and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Gaster’s office at (562) 826-8000.
What are Areas of Expertise for Dr. Gaster?
Dr. Ronald Gaster, 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. Gaster empowers patients to confidently navigate their health journey, specializing in Cataract Surgery, Corneal Disease & Transplant, Keratoconus/Corneal Cross-Linking(CXL), LASIK-Refractive Surgery, or comprehensive wellness support. Serving the Fountain Valley/CA community, Dr. Gaster is dedicated to enhancing lives through expert, patient-centered care.
Where did Dr. Gaster go to medical school and complete their residency?
Residency: Kings County Hosp Ctr, Ophthalmology; Univ Of Chicago Hosps, Ophthalmology; Univ Ca San Diego Med Ctr, General Surgery | University of California At San Diego | University of Chicago, Section of Gastroenterology and Nutrition | Manhattan E E T Hospital
Medical School: University of Ca, Los Angeles, Ucla Sch of Med, Los Angeles Ca
Is Dr. Gaster board certified in Ophthalmologist?
Yes, Dr. Ronald Gaster, MD is board certified by the American Board of Ophthalmology
What languages does Dr. Gaster speak?
Dr. Gaster and their clinical team can communicate with patients in the following languages:
English
Spanish
What conditions does Dr. Gaster treat?
As a Ophthalmologist, Dr. Gaster 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. Gaster. 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:
- Dry Eyes
- Tears
- Dry eye syndrome
- Keratoconjunctivitis sicca
- Ocular dryness
ICD-10 Codes:
- H04123: Dry eye syndrome of bilateral lacrimal glands
- H04129: Dry eye syndrome of unspecified lacrimal gland
Also known as:
- Keratoconus
- Corneal Disorder
- Cone-shaped Cornea
- Corneal Thinning Disorder
- Bulging Cornea
- Conical cornea
- KC
- Corneal thinning disorder
ICD-10 Codes:
- H18609: Keratoconus, unspecified, unspecified eye
- H18603: Keratoconus, unspecified, bilateral
- H18621: Keratoconus, unstable, right eye
Also known as:
- Cataract
- Cloudy lens
- Lens clouding
- Eye cloudiness
ICD-10 Codes:
- H2513: Age-related nuclear cataract, bilateral
- H2511: Age-related nuclear cataract, right eye
- H2512: Age-related nuclear cataract, left eye
Also known as:
- Corneal Transplant
- Organ Transplantation
- Eye Transplant
- Cornea Graft
- Keratoplasty
ICD-10 Codes:
- Z947: Corneal transplant status
Also known as:
- Corneal Swelling
- Dry Eye Syndrome
- Cloudy Cornea
- Corneal deformity
- Corneal Disorder
- Swollen Cornea
- Corneal Edema
- Fluid in Cornea
- Dry Eye Disease
- Chronic Dry Eye
- Keratoconjunctivitis Sicca
- Corneal Clouding
- Corneal Scarring
- Corneal Opacity
- Misshapen cornea
- Corneal malformation
- Abnormal cornea shape
ICD-10 Codes:
- H1820: Unspecified corneal edema
- H16223: Keratoconjunctivitis sicca, not specified as Sjogren's, bilateral
- H1710: Central corneal opacity, unspecified eye
- H1870: Unspecified corneal deformity
Also known as:
- Preglaucoma
- Primary Open-Angle Glaucoma
- Glaucoma
- Early Glaucoma
- Borderline Glaucoma
- Risk of Glaucoma
- POAG
- Chronic Simple Glaucoma
- Wide-Angle Glaucoma
ICD-10 Codes:
- H40003: Preglaucoma, unspecified, bilateral
- H401190: Primary open-angle glaucoma, unspecified eye, stage unspecified
Also known as:
- Corneal Ectasia
- Corneal Disorder
- Corneal Bulging
- Corneal Thinning
- Eye Surface Bulge
ICD-10 Codes:
- H18713: Corneal ectasia, bilateral
- H18719: Corneal ectasia, unspecified eye
Also known as:
- Other Vision Problems
- Vision Impairment and Blindness
- Other visual disturbances
- Unspecified vision issues
- Various eye problems
ICD-10 Codes:
- H538: Other visual disturbances
Also known as:
- Herpes Eye Infection
- Herpes Simplex
- Herpes Keratitis
- Ocular Herpes
- Corneal Herpes
ICD-10 Codes:
- B0052: Herpesviral keratitis
Also known as:
- Pterygium
- Eye Disease
- Surfer's Eye', 'Farmer's Eye
- Wing-shaped Growth on Eye
ICD-10 Codes:
- H11052: Peripheral pterygium, progressive, left eye
Which procedures does Dr. Gaster perform as a Ophthalmologist?
As a Ophthalmologist, procedures performed by an Dr. Ronald Gaster 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. Gaster's office.
Does Dr. Gaster accept my insurance?
Dr. Gaster accepts most major insurance plans. Important: Please call our office at (562) 826-8000 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Gaster accept in Fountain Valley, CA?
Dr. Gaster in Fountain Valley, CA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
All Other Third Party
Blue Shield of California
CalOptima
CVS Health (formerly Aetna)
Directors Guild of America Employees
Elevance Health Inc. (formerly Anthem)
Medicare
Monarch HealthCare
Other Provider Networks
UnitedHealthcare
View All Insurances
Where is Dr. Gaster's office located?
Dr. Ronald Gaster's Primary Practice
18426 Brookhurst St Ste 103
Fountain Valley, CA 92708
(562) 826-8000
What is Dr. Gaster's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Gaster's National Provider Identifier (NPI) number is 1306940325.
What common questions do patients ask about Dr. Gaster?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Gaster
What is Dr. Ronald Gaster's specialty?
Dr. Gaster is a Ophthalmologist near Fountain Valley, CA. 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. Gaster to book an appointment today.
Is this Dr. Ronald Gaster affiliated with a ranked Castle Connolly Top Hospital?
No, Gaster is not affiliated with a Castle Connolly Top Hospital, but is affiliated with the following hospitals: MemorialCare Long Beach Medical Center. 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 Ronald Gaster accepting new patients in Fountain Valley, CA?
Yes, Dr. Ronald Gaster is accepting new patients at this time.
Does Dr. Ronald Gaster offer online booking?
Please contact Dr. Gaster's office at (562) 826-8000 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Ronald Gaster?
Please contact Dr. Gaster's office at (562) 826-8000 for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. Ronald Gaster have?
Dr. Ronald Gaster is certified by the American Board of Ophthalmology.
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