EG
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Grannum, Ophthalmologist in McAllen, TX?
Dr. Errol Grannum, MD is an Ophthalmologist, who primarily practices in McAllen, TX with 2 additional practice locations. Dr. Grannum graduated from Yale University School of Medicine. Dr. Grannum is fluent in English and Spanish, and is currently seeing new patients. Dr. Grannum’s practice accepts Medicaid, Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Grannum’s office at (956) 687-3937.
Where did Dr. Grannum go to medical school and complete their residency?
Medical School: Yale University School of Medicine
What languages does Dr. Grannum speak?
Dr. Grannum and their clinical team can communicate with patients in the following languages:
English
Spanish
What conditions does Dr. Grannum treat?
As an Ophthalmologist, Dr. Grannum 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. Grannum. 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:
- Primary Open-Angle Glaucoma
- Narrow Angle Glaucoma Risk
- Borderline Open-Angle Glaucoma
- Glaucoma
- Chronic Angle-Closure Glaucoma
- Narrow-Angle Glaucoma
- Ocular Hypertension
- Chronic Open-Angle Glaucoma
- Wide-Angle Glaucoma
- POAG
- Anatomical Narrow Angle
- Angle-Closure Glaucoma Risk
- Eye angle problem
- Early Open-Angle Glaucoma
- Open-angle glaucoma suspect
- Risk of Open-Angle Glaucoma
- High Eye Pressure
- Optic Nerve Damage
- Eye Pressure Disorder
- Chronic Simple Glaucoma
- Long-term Angle-Closure Glaucoma
- Gradual Angle-Closure Glaucoma
- Persistent Narrow-Angle Glaucoma
- Angle-Closure Glaucoma
- Acute Glaucoma
- Closed-Angle Glaucoma
- Elevated Intraocular Pressure
- Eye pressure problem
ICD-10 Codes:
- H401133: Primary open-angle glaucoma, bilateral, severe stage
- H40033: Anatomical narrow angle, bilateral
- H401113: Primary open-angle glaucoma, right eye, severe stage
- H40013: Open angle with borderline findings, low risk, bilateral
- H401131: Primary open-angle glaucoma, bilateral, mild stage
- H4089: Other specified glaucoma
- H401123: Primary open-angle glaucoma, left eye, severe stage
- H401132: Primary open-angle glaucoma, bilateral, moderate stage
- H401111: Primary open-angle glaucoma, right eye, mild stage
- H402233: Chronic angle-closure glaucoma, bilateral, severe stage
- H401112: Primary open-angle glaucoma, right eye, moderate stage
- H40031: Anatomical narrow angle, right eye
- H40032: Anatomical narrow angle, left eye
- H40053: Ocular hypertension, bilateral
- H402231: Chronic angle-closure glaucoma, bilateral, mild stage
Also known as:
- Cataract
- Cloudy lens
- Lens clouding
- Eye cloudiness
ICD-10 Codes:
- H2513: Age-related nuclear cataract, bilateral
Also known as:
- Type 2 Diabetes
- Type 2 Diabetes with Advanced Diabetic Eye Disease and Macular Swelling (Both Eyes)
- Type 2 Diabetes with Diabetic Retinopathy
- Diabetes Type 2
- Type 2 diabetes
- Diabetic Eye Problems
- Diabetes Mellitus Type 2
- Adult-Onset Diabetes
- Non-Insulin Dependent Diabetes
- Proliferative Diabetic Retinopathy with Macular Edema Bilateral
- Advanced Retina Damage Both Eyes with Macular Swelling
- Diabetic Macular Edema Both Eyes
- Diabetic Eye Disease
- Diabetic Retinal Disease
- Diabetes Mellitus Eye Complications
ICD-10 Codes:
- E119: Type 2 diabetes mellitus without complications
- E113513: Type 2 diabetes mellitus with proliferative diabetic retinopathy with macular edema, bilateral
- E113593: Type 2 diabetes mellitus with proliferative 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
What procedures does Dr. Grannum perform?
As an Ophthalmologist, Dr. Grannum 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. Grannum. 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:
- Laser Eye Surgery for Glaucoma
- Laser Trabeculoplasty
- Laser Surgery for Secondary Cataract
- Iridotomy
- Iridectomy
- Laser Glaucoma Treatment
- Glaucoma laser surgery
- Laser eye treatment for glaucoma
- Trabeculoplasty
- YAG Laser Capsulotomy
- Posterior Capsulotomy
- Secondary Cataract Removal
- Laser Eye Surgery
CPT Codes:
- 66761: Iridotomy/iridectomy by laser surgery (eg, for glaucoma) (per session)
- 65855: Trabeculoplasty by laser surgery
- 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:
- Eye Injection
- Eye Medication Injection
- Intravitreal Injection
- Retinal Injection
- Macular Degeneration Injection
- Intraocular injection
- Anterior chamber injection
- Eye drug injection
CPT Codes:
- 67028: Intravitreal injection of a pharmacologic agent (separate procedure)
- 66030: Injection, anterior chamber of eye (separate procedure); medication
Also known as:
- Glaucoma Drainage Device Implant
- Aqueous Shunt Surgery
- Glaucoma Shunt with Graft
- Eye Pressure Shunt
CPT Codes:
- 66180: Aqueous shunt to extraocular equatorial plate reservoir, external approach; with graft
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:
- 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:
- 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
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
Also known as:
- Facial Muscle Injection for Spasms (One Side)
- Botox for facial spasms
- Facial nerve chemodenervation
- Blepharospasm treatment
- Hemifacial spasm injection
CPT Codes:
- 64612: Chemodenervation of muscle(s); muscle(s) innervated by facial nerve, unilateral (eg, for blepharospasm, hemifacial spasm)
Does Dr. Grannum accept my insurance?
Dr. Grannum accepts most major insurance plans. Important: Please call our office at (956) 687-3937 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Grannum accept in McAllen, TX?
Dr. Grannum in McAllen, TX 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
Express Scripts
First Medical Health Plan
Health Care Service Corporation (HCSC)
Medicare
MedImpact
Molina
Other Health Care Provider
UnitedHealthcare
View All Insurances
Where is Dr. Grannum's office located?
What is Dr. Grannum's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Grannum's National Provider Identifier (NPI) number is 1508897935.
What common questions do patients ask about Dr. Grannum?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Grannum
What is Dr. Errol Grannum's specialty?
Dr. Grannum is a Ophthalmologist near McAllen, TX. 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. Grannum to book an appointment today.
Is this Dr. Errol Grannum affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Grannum is affiliated with Rio Grande Regional Hospital, DHR Health, Valley Baptist Medical Center — Brownsville 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 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 Errol Grannum accepting new patients in McAllen, TX?
Yes, Dr. Errol Grannum is accepting new patients at this time.
Does Dr. Errol Grannum offer online booking?
Please contact Dr. Grannum's office at (956) 687-3937 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Errol Grannum?
Please contact Dr. Grannum's office at (956) 687-3937 for information regarding telehealth appointment availability or for scheduling assistance.
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