Accepting patients
Who is Dr. Guan, Glaucoma Specialist in San Marcos, CA?
Dr. Howard Guan, MD is a Glaucoma Specialist, who primarily practices in San Marcos, CA with 2 additional practice locations. He is board certified. Dr. Guan is fluent in English and Spanish, and is currently seeing new patients. Dr. Guan’s practice accepts Medicaid, Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Guan’s office at (760) 598-0400.
What languages does Dr. Guan speak?
Dr. Guan and their clinical team can communicate with patients in the following languages:
English
Spanish
What conditions does Dr. Guan treat?
As a Glaucoma Specialist, Dr. Guan 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. Guan. 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:
- Cataract
- Combined Age-Related Cataract
- Cloudy lens
- Lens clouding
- Eye cloudiness
- Mixed Type Cataract
- Multiple Cataract Types
ICD-10 Codes:
- H2513: Age-related nuclear cataract, bilateral
- H2511: Age-related nuclear cataract, right eye
- H2512: Age-related nuclear cataract, left eye
- H25812: Combined forms of age-related cataract, left eye
- H25811: Combined forms of age-related cataract, right eye
Also known as:
- Borderline Open-Angle Glaucoma
- Primary Open-Angle Glaucoma
- Preglaucoma
- Glaucoma
- Early Open-Angle Glaucoma
- Open-angle glaucoma suspect
- Risk of Open-Angle Glaucoma
- Chronic Open-Angle Glaucoma
- Wide-Angle Glaucoma
- POAG
- Early Glaucoma
- Borderline Glaucoma
- Risk of Glaucoma
ICD-10 Codes:
- H40013: Open angle with borderline findings, low risk, bilateral
- H401131: Primary open-angle glaucoma, bilateral, mild stage
- H401132: Primary open-angle glaucoma, bilateral, moderate stage
- H40003: Preglaucoma, unspecified, bilateral
- H401133: Primary open-angle glaucoma, bilateral, severe stage
Also known as:
- Type 2 Diabetes
- Type 2 Diabetes with Macular Edema
- Type 2 Diabetes with Advanced Diabetic Eye Disease and Macular Swelling (Both Eyes)
- Type 2 Diabetes with Early Diabetic Eye Disease (Both Eyes)
- Diabetes Type 2
- Type 2 diabetes
- Diabetic Eye Problems
- Diabetes Mellitus Type 2
- Adult-Onset Diabetes
- Non-Insulin Dependent Diabetes
- Diabetic Eye Swelling
- Type 2 Diabetes Mellitus
- Diabetic Macular Swelling
- Proliferative Diabetic Retinopathy with Macular Edema Bilateral
- Advanced Retina Damage Both Eyes with Macular Swelling
- Diabetic Macular Edema Both Eyes
- Mild Nonproliferative Diabetic Retinopathy Bilateral
- Early Retina Damage in Both Eyes
- Beginning Diabetic Retinopathy in Both Eyes
ICD-10 Codes:
- E119: Type 2 diabetes mellitus without complications
- E113511: Type 2 diabetes mellitus with proliferative diabetic retinopathy with macular edema, right eye
- E113512: Type 2 diabetes mellitus with proliferative diabetic retinopathy with macular edema, left eye
- E113513: Type 2 diabetes mellitus with proliferative diabetic retinopathy with macular edema, bilateral
- E113293: Type 2 diabetes mellitus with mild nonproliferative diabetic retinopathy without macular edema, bilateral
Also known as:
- Dry Eyes
- Tears
- Dry eye syndrome
- Keratoconjunctivitis sicca
- Ocular dryness
ICD-10 Codes:
- H04123: Dry eye syndrome of bilateral lacrimal glands
Also known as:
- Dry Eye Syndrome
- Tears
- Dry Eyes
- Keratoconjunctivitis Sicca
- Ocular Dryness
- Chronic Dry Eye
ICD-10 Codes:
- H04121: Dry eye syndrome of right lacrimal gland
- H04122: Dry eye syndrome of left lacrimal gland
Also known as:
- Intraocular Lens Implant
- Cataract
- Refractive Errors
- IOL Implant
- Artificial Eye Lens
- Cataract Lens Implant
ICD-10 Codes:
- Z961: Presence of intraocular lens
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. Guan perform as a Glaucoma Specialist?
As a Glaucoma Specialist, procedures performed by a Dr. Howard Guan 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. Guan's office.
Does Dr. Guan accept my insurance?
Dr. Guan accepts most major insurance plans. Important: Please call our office at (760) 598-0400 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Guan accept in San Marcos, CA?
Dr. Guan in San Marcos, CA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
Alignment Health Plan
All Other Third Party
Blue Shield of California
Brand New Day
Centene
Heritage Health
Medicare
Molina
Other Health Care Provider
Universal Health Care
View All Insurances
Where is Dr. Guan's office located?
Dr. Howard Guan's Primary Practice
100 N Rancho Santa Fe Rd Ste 126
San Marcos, CA 92069
(760) 598-0400
What is Dr. Guan's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Guan's National Provider Identifier (NPI) number is 1134427636.
What common questions do patients ask about Dr. Guan?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Guan
What is Dr. Howard Guan's specialty?
Dr. Guan is a Glaucoma Specialist near San Marcos, CA. An ophthalmologist specializing in the treatment of glaucoma and related disorders focuses on managing conditions associated with increased intraocular pressure and optic nerve damage. This specialty encompasses both medical and surgical interventions to effectively treat these conditions. Contact Dr. Guan to book an appointment today.
Is this Dr. Howard Guan affiliated with a ranked Castle Connolly Top Hospital?
No, Guan is not affiliated with a Castle Connolly Top Hospital. 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 Glaucoma Specialist?
Explore Glaucoma Specialist 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 Howard Guan accepting new patients in San Marcos, CA?
Yes, Dr. Howard Guan is accepting new patients at this time.
Does Dr. Howard Guan offer online booking?
Please contact Dr. Guan's office at (760) 598-0400 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Howard Guan?
Please contact Dr. Guan's office at (760) 598-0400 for information regarding telehealth appointment availability or for scheduling assistance.
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