Accepting patients
Affiliated with a Castle Connolly Top Hospital
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. 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
- 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:
- Dry Eyes
- Tears
- Dry eye syndrome
- Keratoconjunctivitis sicca
- Ocular dryness
ICD-10 Codes:
- H04123: Dry eye syndrome of bilateral lacrimal glands
Also known as:
- Borderline Open-Angle Glaucoma
- Glaucoma
- Early Open-Angle Glaucoma
- Open-angle glaucoma suspect
- Risk of Open-Angle Glaucoma
ICD-10 Codes:
- H40013: Open angle with borderline findings, low risk, bilateral
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 Eye Syndrome
- Tears
- Dry Eyes
- Keratoconjunctivitis Sicca
- Ocular Dryness
- Chronic Dry Eye
ICD-10 Codes:
- H04121: Dry eye syndrome of right lacrimal gland
What procedures does Dr. Guan perform?
As a Glaucoma Specialist, Dr. Guan 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. 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 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:
- Eye Injection
- Intravitreal Injection
- Retinal Injection
- Macular Degeneration Injection
- Eye Medication Injection
CPT Codes:
- 67028: Intravitreal injection of a pharmacologic agent (separate procedure)
Also known as:
- Pterygium Removal with Graft
- Laser Trabeculoplasty
- Laser Eye Surgery for Glaucoma
- Laser Surgery for Secondary Cataract
- Cataract Surgery with Glaucoma Drainage Device
- Eye Drainage Device Insertion
- Pterygium Excision with Autograft', 'Conjunctival Graft for Pterygium', 'Surfer's Eye Surgery with Graft
- 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
- Combined Cataract and Glaucoma Surgery
- Phacoemulsification with Aqueous Drainage Device
- IOL Insertion with Glaucoma Stent
- Aqueous drainage device placement
- Glaucoma drainage implant
- Subconjunctival drainage device
CPT Codes:
- 65426: Excision or transposition of pterygium; with graft
- 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)
- 66991: Extracapsular cataract removal with insertion of intraocular lens prosthesis (1 stage procedure), manual or mechanical technique (eg, irrigation and aspiration or phacoemulsification); with insertion of intraocular (eg, trabecular meshwork, supraciliary, suprachoroidal) anterior segment aqueous drainage device, without extraocular reservoir, internal approach, one or more
- 0449T: Insertion of aqueous drainage device, without extraocular reservoir, internal approach, into the subconjunctival space; initial device
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
Also known as:
- Goniotomy (Glaucoma Surgery)
- Glaucoma Drainage Device Implant
- Goniotomy Procedure
- Angle-Opening Glaucoma Surgery
- Congenital Glaucoma Surgery
- Aqueous Shunt Surgery
- Glaucoma Shunt with Graft
- Eye Pressure Shunt
CPT Codes:
- 65820: Goniotomy
- 66180: Aqueous shunt to extraocular equatorial plate reservoir, external approach; with graft
Also known as:
- Laser Treatment for Retinopathy
- Retina Laser Treatment (Photocoagulation)
- Photocoagulation for Retinopathy
- Diabetic Retinopathy Laser Treatment
- Retinal Laser Therapy
- Retinal photocoagulation
- Macular edema laser
- Retina tumor laser treatment
CPT Codes:
- 67228: Treatment of extensive or progressive retinopathy (eg, diabetic retinopathy), photocoagulation
- 67210: Destruction of localized lesion of retina (eg, macular edema, tumors), 1 or more sessions; photocoagulation
Also known as:
- Glaucoma Laser Treatment (Cyclophotocoagulation)
- Transscleral cyclophotocoagulation
- Ciliary body laser
- CPC treatment
CPT Codes:
- 66710: Ciliary body destruction; cyclophotocoagulation, transscleral
Also known as:
- Tear Duct Plug Insertion
- Punctal Plug Insertion
- Lacrimal Punctum Closure
- Dry Eye Plugs
CPT Codes:
- 68761: Closure of the lacrimal punctum; by plug, each
Also known as:
- Eye Surface Reconstruction with Amniotic Membrane
- Amniotic Membrane Transplant (Eye)
- Ocular Surface Repair
- Cornea Reconstruction
CPT Codes:
- 65780: Ocular surface reconstruction; amniotic membrane transplantation, multiple layers
Also known as:
- Eye Shunt Revision with Graft
- Aqueous Shunt Repair
- Glaucoma Drainage Device Revision
- Eye Pressure Shunt Adjustment
CPT Codes:
- 66185: Revision of aqueous shunt to extraocular equatorial plate reservoir; with graft
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
Crown Cork and Seal Company
Heritage Health
Medicare
Molina
Other Health Care Provider
SGS North America Inc
Steward Health Choice
View All Insurances
Where is Dr. Guan's office located?
Dr. Howard Guan's Primary Practice
340 Rancheros Dr # 164/166
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?
Yes, Dr. Guan is affiliated with Tri-City Medical Center, Sharp Memorial Hospital which are a Castle Connolly Top Hospitals. 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
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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