JW
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Warren, Ophthalmologist in Greenfield, MA?
Dr. John Warren, MD is an Ophthalmologist, who primarily practices in Greenfield, MA with 1 additional practice location. He is board certified by the American Board of Ophthalmology. Dr. Warren graduated from Stanford University School of Medicine and completed his residency at Univ Ca Sf Sch Of Med, Ophthalmology; Santa Clara Valley Med Ctr, Internal Medicine. Dr. Warren is fluent in English, French, Russian, and Spanish, and is currently seeing new patients. Dr. Warren’s practice accepts Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Warren’s office at (413) 774-7016.
Where did Dr. Warren go to medical school and complete their residency?
Residency: Univ Ca Sf Sch Of Med, Ophthalmology; Santa Clara Valley Med Ctr, Internal Medicine
Medical School: Stanford Univ Sch Of Med- Stanford Ca | Stanford University School of Medicine
Is Dr. Warren board certified in Ophthalmologist?
Yes, Dr. John Warren, MD is board certified by the American Board of Ophthalmology
What languages does Dr. Warren speak?
Dr. Warren and their clinical team can communicate with patients in the following languages:
English
French
Russian
Spanish
What conditions does Dr. Warren treat?
As a Ophthalmologist, Dr. Warren 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. Warren. 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
- Cortical Age-Related Cataract
- Other Secondary Cataract
- Posterior Subcapsular Polar Age-Related Cataract
- Cloudy lens
- Lens clouding
- Eye cloudiness
- Cortical Cataract
- Outer Lens Clouding
- Cataract from another condition
- Complicated cataract
- Acquired cataract
- Back Lens Capsule Cataract
- Posterior Polar Cataract
ICD-10 Codes:
- H2512: Age-related nuclear cataract, left eye
- H2511: Age-related nuclear cataract, right eye
- H2513: Age-related nuclear cataract, bilateral
- H25012: Cortical age-related cataract, left eye
- H25011: Cortical age-related cataract, right eye
- H26493: Other secondary cataract, bilateral
- H25041: Posterior subcapsular polar age-related cataract, right eye
- H25042: Posterior subcapsular polar age-related cataract, left eye
- H25013: Cortical age-related cataract, bilateral
Also known as:
- Borderline Open-Angle Glaucoma
- Primary Open-Angle Glaucoma
- Glaucoma
- Early Open-Angle Glaucoma
- Open-angle glaucoma suspect
- Risk of Open-Angle Glaucoma
- POAG
- Chronic Simple Glaucoma
- Wide-Angle Glaucoma
- Chronic Open-Angle Glaucoma
ICD-10 Codes:
- H40013: Open angle with borderline findings, low risk, bilateral
- H401111: Primary open-angle glaucoma, right eye, mild stage
- H401131: Primary open-angle glaucoma, bilateral, mild stage
- H401121: Primary open-angle glaucoma, left eye, mild stage
- H401122: Primary open-angle glaucoma, left eye, moderate stage
Also known as:
- Hereditary Corneal Dystrophies
- Corneal Disorder
- Genetic Corneal Disorders
- Inherited Corneal Conditions
- Familial Eye Dystrophies
ICD-10 Codes:
- H18593: Other hereditary corneal dystrophies, bilateral
Also known as:
- Pterygium
- Eye Disease
- Surfer's Eye', 'Farmer's Eye
- Wing-shaped Growth on Eye
ICD-10 Codes:
- H11051: Peripheral pterygium, progressive, right eye
What procedures does Dr. Warren perform?
As a Ophthalmologist, Dr. Warren 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. Warren. 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:
- Cataract Surgery with Glaucoma Drainage Device
- Laser Surgery for Secondary Cataract
- Pterygium Removal with Graft
- Combined Cataract and Glaucoma Surgery
- Phacoemulsification with Aqueous Drainage Device
- IOL Insertion with Glaucoma Stent
- YAG Laser Capsulotomy
- Posterior Capsulotomy
- Secondary Cataract Removal
- Laser Eye Surgery
- Pterygium Excision with Autograft', 'Conjunctival Graft for Pterygium', 'Surfer's Eye Surgery with Graft
CPT Codes:
- 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
- 66821: Discission of secondary membranous cataract (opacified posterior lens capsule and/or anterior hyaloid); laser surgery (eg, YAG laser) (1 or more stages)
- 65426: Excision or transposition of pterygium; with graft
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:
- Endothelial Corneal Transplant
- Keratoplasty
- Endothelial keratoplasty
- Corneal graft
CPT Codes:
- 65756: Keratoplasty (corneal transplant); endothelial
Does Dr. Warren accept my insurance?
Dr. Warren accepts most major insurance plans. Important: Please call our office at (413) 774-7016 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Warren accept in Greenfield, MA?
Dr. Warren in Greenfield, MA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
BlueCross and BlueShield of Vermont
Boston Medical Center
CVS Health (formerly Aetna)
Express Scripts
Fallon Community Health Plan
Medicare
Network Health
Point32Health
State of Tennessee
UnitedHealthcare
View All Insurances
Where is Dr. Warren's office located?
What is Dr. Warren's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Warren's National Provider Identifier (NPI) number is 1386634400.
What common questions do patients ask about Dr. Warren?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Warren
What is Dr. John Warren's specialty?
Dr. Warren is a Ophthalmologist near Greenfield, MA. 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. Warren to book an appointment today.
Is this Dr. John Warren affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Warren is affiliated with UMass Memorial HealthAlliance Clinton Hospital - Leominster Campus which is a Castle Connolly Top Hospital. 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 John Warren accepting new patients in Greenfield, MA?
Yes, Dr. John Warren is accepting new patients at this time.
Does Dr. John Warren offer online booking?
Please contact Dr. Warren's office at (413) 774-7016 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with John Warren?
Please contact Dr. Warren's office at (413) 774-7016 for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. John Warren have?
Dr. John Warren is certified by the American Board of Ophthalmology.
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