Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Chang, Ophthalmologist in Lancaster, MA?
Dr. Joann Chang, MD is an Ophthalmologist, who primarily practices in Lancaster, MA with 1 additional practice location. She is board certified. Dr. Chang is fluent in English and Chinese, and is currently seeing new patients. Dr. Chang’s practice accepts Medicare, UnitedHealthcare, Aetna, Cigna and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Chang’s office.
What are Areas of Expertise for Dr. Chang?
Dr. Joann Chang, 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. Chang empowers patients to confidently navigate their health journey, specializing in Cataract Surgery, Cornea Transplant, Corneal Disease & Transplant, LASIK-Refractive Surgery, or comprehensive wellness support. Serving the Lancaster/MA community, Dr. Chang is dedicated to enhancing lives through expert, patient-centered care.
Where did Dr. Chang go to medical school and complete their residency?
Medical School: University of Cincinnati / Main Campus
Is Dr. Chang board certified as an Ophthalmologist?
Yes, Dr. Joann Chang, MD is board certified by the American Board of Ophthalmology
What languages does Dr. Chang speak?
Dr. Chang and their clinical team can communicate with patients in the following languages:
Chinese
English
What conditions does Dr. Chang treat?
As an Ophthalmologist, Dr. Chang 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. Chang. 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
- Secondary Cataract
- Other Secondary Cataract
- Cloudy lens
- Lens clouding
- Eye cloudiness
- After-Cataract
- Posterior Capsule Opacification
- PCO
- Cataract from another condition
- Complicated cataract
- Acquired cataract
ICD-10 Codes:
- H2513: Age-related nuclear cataract, bilateral
- H2511: Age-related nuclear cataract, right eye
- H2512: Age-related nuclear cataract, left eye
- H26492: Other secondary cataract, left eye
- H26491: Other secondary cataract, right eye
- H26493: Other secondary cataract, 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:
- Fuchs' Dystrophy
- Corneal Disorder
- Fuchs' Endothelial Dystrophy', 'Corneal Endothelial Dystrophy', 'Fuchs' Corneal Disease
ICD-10 Codes:
- H18513: Endothelial corneal dystrophy, bilateral
Also known as:
- Aging of the eye's gel
- Eye gel sticking to the macula
- Eye Disease
- Vitreous Detachment
- Vitreous syneresis
- Eye gel breakdown
- Vitreous aging
- VMA
- Macular adhesion
- Vitreous traction
ICD-10 Codes:
- H43813: Vitreous degeneration, bilateral
- H43823: Vitreomacular adhesion, bilateral
Also known as:
- Dry Eye Syndrome
- Corneal Disorder
- Dry Eye Disease
- Chronic Dry Eye
- Keratoconjunctivitis Sicca
ICD-10 Codes:
- H16223: Keratoconjunctivitis sicca, not specified as Sjogren's, bilateral
Also known as:
- Eye and Vision Examination with Abnormal Findings
- Eye Disease
- Vision Impairment and Blindness
- Eye Exam with Issues
- Abnormal Vision Test
- Eye Doctor Follow-up
ICD-10 Codes:
- Z0101: Encounter for examination of eyes and vision with abnormal findings
Also known as:
- Age-Related Farsightedness
- Nearsightedness
- Refractive Errors
- Presbyopia
- Aging Eyes
- Difficulty Reading Up Close
- Myopia
- Difficulty Seeing Far Away
- Blurry Distance Vision
ICD-10 Codes:
- H524: Presbyopia
- H5213: Myopia, bilateral
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:
- Corneal Transplant
- Organ Transplantation
- Eye Transplant
- Cornea Graft
- Keratoplasty
ICD-10 Codes:
- Z947: Corneal transplant status
Also known as:
- Macular Pucker
- Retinal Disorder
- Epiretinal Membrane
- Cellophane Maculopathy
- Macular Wrinkle
- Retinal Scar
ICD-10 Codes:
- H35373: Puckering of macula, bilateral
Also known as:
- Macular Drusen
- Macular Degeneration
- Retinal Drusen
- Yellow Spots on Retina
- Age-Related Macular Drusen
- Drusen in Eye
ICD-10 Codes:
- H35363: Drusen (degenerative) of macula, bilateral
Also known as:
- Herpes Eye Infection
- Herpes Simplex
- Herpes Keratitis
- Ocular Herpes
- Corneal Herpes
ICD-10 Codes:
- B0052: Herpesviral keratitis
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
What procedures does Dr. Chang perform?
As an Ophthalmologist, Dr. Chang 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. Chang. 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:
- Laser Surgery for Secondary Cataract
- Pterygium Removal with Graft
- Tear Duct Opening Closure
- 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
- Punctal Occlusion
- Lacrimal Punctum Closure
- Dry Eye Treatment (Punctal)
CPT Codes:
- 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
- 68760: Closure of the lacrimal punctum; by thermocauterization, ligation, or laser surgery
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:
- 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
Also known as:
- Corneal Foreign Body Removal with Slit Lamp
- Eye Foreign Object Removal
- Corneal Rust Ring Removal
- Slit Lamp Foreign Body Extraction
CPT Codes:
- 65222: Removal of foreign body, external eye; corneal, with slit lamp
Also known as:
- Foreign Body Removal from Eye Surface
- Eye Foreign Object Removal
- Conjunctival Foreign Body Excision
- Scleral Foreign Body Removal
CPT Codes:
- 65210: Removal of foreign body, external eye; conjunctival embedded (includes concretions), subconjunctival, or scleral nonperforating
Also known as:
- Amniotic Membrane Placement on Eye (No Stitches)
- Ocular surface repair with amniotic membrane
- Eye membrane graft
- Sutureless amniotic membrane transplant
CPT Codes:
- 65778: Placement of amniotic membrane on the ocular surface; without sutures
Does Dr. Chang accept my insurance?
Dr. Chang accepts most major insurance plans. Important: Please call our office at before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Chang accept in Lancaster, MA?
Dr. Chang in Lancaster, MA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
All Other Third Party
Boston Medical Center
CVS Health (formerly Aetna)
Elevance Health Inc. (formerly Anthem)
Fallon Community Health Plan
Health Plans
Medicare
Point32Health
State of Massachusetts
UnitedHealthcare
View All Insurances
Where is Dr. Chang's office located?
What is Dr. Chang's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Chang's National Provider Identifier (NPI) number is 1730359100.
What common questions do patients ask about Dr. Chang?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Chang
What is Dr. Joann Chang's specialty?
Dr. Chang is a Ophthalmologist near Lancaster, 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. Chang to book an appointment today.
Is this Dr. Joann Chang affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Chang is affiliated with UMass Memorial HealthAlliance Clinton Hospital - Leominster Campus, Emerson Health 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 Joann Chang accepting new patients in Lancaster, MA?
Yes, Dr. Joann Chang is accepting new patients at this time.
Does Dr. Joann Chang offer online booking?
Please contact Dr. Chang's office for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Joann Chang?
Please contact Dr. Chang's office for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. Joann Chang have?
Dr. Joann Chang is certified by the American Board of Ophthalmology.
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