Dr. Allen Chiang, MD

Plymouth Meeting, PA

Accepting patients

Who is Dr. Chiang, Ophthalmologist in Plymouth Meeting, PA?

Dr. Allen Chiang, MD is an Ophthalmologist, who primarily practices in Plymouth Meeting, PA with 2 additional practice locations. He is board certified. Dr. Chiang completed his residency at UCLA. Dr. Chiang is fluent in English and Mandarin, and is currently seeing new patients. Dr. Chiang’s practice accepts Medicare, Aetna, Cigna, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Chiang’s office.

Castle Connolly Top Doctor

Castle Connolly Top Doctors are doctor-nominated and selected by a physician-led research team.

What are Areas of Expertise for Dr. Chiang?

Dr. Allen Chiang, MD is a highly-rated, board-certified Ophthalmologist known for expertly diagnosing, treating, and managing a wide array of related conditions and procedures. Utilizing the latest medical advancements and evidence-based practices, Dr. Chiang empowers patients to confidently navigate their health journey, specializing in Diabetic Eye Disease/Retinopathy, Macular Disease/Degeneration, Retinal Disorders, and comprehensive wellness support. Serving the Plymouth Meeting, PA community, Dr. Chiang is dedicated to enhancing lives through expert, patient-centered care.

Where did Dr. Chiang go to medical school and complete their residency?

Residency: UCLA

Is Dr. Chiang board certified as an Ophthalmologist?

Yes, Dr. Allen Chiang, MD is board certified by the American Board of Ophthalmology

What languages does Dr. Chiang speak?

Dr. Chiang and their clinical team can communicate with patients in the following languages:

English
Mandarin

What conditions does an Ophthalmologist like Dr. Chiang typically treat?

As an Ophthalmologist, Dr. Chiang 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. Chiang. 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. Learn more about our claims-based healthcare methodology.

Also known as:

Wet Macular Degeneration
Macular Degeneration
Exudative AMD
Neovascular Macular Degeneration
Wet AMD
Age-related Macular Degeneration (Wet)

ICD-10 Codes:

H353231: Exudative age-related macular degeneration, bilateral, with active choroidal neovascularization
H353211: Exudative age-related macular degeneration, right eye, with active choroidal neovascularization
H353221: Exudative age-related macular degeneration, left eye, with active choroidal neovascularization

Also known as:

Type 2 Diabetes with Advanced Diabetic Eye Disease and Macular Swelling (Both Eyes)
Type 2 Diabetes with Severe Diabetic Eye Disease and Macular Swelling (Both Eyes)
Type 2 Diabetes with Macular Edema
Diabetes Type 2
Diabetic Eye Problems
Proliferative Diabetic Retinopathy with Macular Edema Bilateral
Advanced Retina Damage Both Eyes with Macular Swelling
Diabetic Macular Edema Both Eyes
Severe Nonproliferative Diabetic Retinopathy with Macular Edema Bilateral
Diabetic Eye Swelling
Type 2 Diabetes Mellitus
Diabetic Macular Swelling

ICD-10 Codes:

E113513: Type 2 diabetes mellitus with proliferative diabetic retinopathy with macular edema, bilateral
E113413: Type 2 diabetes mellitus with severe nonproliferative diabetic retinopathy with macular edema, bilateral
E113511: Type 2 diabetes mellitus with proliferative diabetic retinopathy with macular edema, right eye
E113313: Type 2 diabetes mellitus with moderate nonproliferative diabetic retinopathy with macular edema, bilateral

Also known as:

Blocked Branch Retinal Vein
Retinal Disorder
Branch Retinal Vein Occlusion
BRVO
Eye Stroke

ICD-10 Codes:

H348320: Tributary (branch) retinal vein occlusion, left eye, with macular edema

What procedures does an Ophthalmologist like Dr. Chiang typically perform?

As an Ophthalmologist, Dr. Chiang 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. Chiang. 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. Learn more about our claims-based healthcare methodology.

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:

Retina Repair for Macular Hole or Edema
Vitrectomy with Membrane Peel
Macular Hole Repair
Diabetic Macular Edema Surgery
Internal Limiting Membrane Removal

CPT Codes:

67042: Vitrectomy, mechanical, pars plana approach; with removal of internal limiting membrane of retina (eg, for repair of macular hole, diabetic macular edema), includes, if performed, intraocular tamponade (ie, air, gas or silicone oil)

Also known as:

Retinal Detachment Repair with Vitrectomy
Vitrectomy for retinal detachment
Retinal reattachment surgery
Eye surgery for detached retina

CPT Codes:

67108: Repair of retinal detachment; with vitrectomy, any method, including, when performed, air or gas tamponade, focal endolaser photocoagulation, cryotherapy, drainage of subretinal fluid, scleral buckling, and/or removal of lens by same technique

Also known as:

Laser Treatment for Retinopathy
Photocoagulation for Retinopathy
Diabetic Retinopathy Laser Treatment
Retinal Laser Therapy

CPT Codes:

67228: Treatment of extensive or progressive retinopathy (eg, diabetic retinopathy), photocoagulation

Also known as:

Complex Retinal Detachment Repair
Vitrectomy for Retinal Detachment
Proliferative Vitreoretinopathy Repair
Diabetic Retinal Detachment Surgery

CPT Codes:

67113: Repair of complex retinal detachment (eg, proliferative vitreoretinopathy, stage C-1 or greater, diabetic traction retinal detachment, retinopathy of prematurity, retinal tear of greater than 90 degrees), with vitrectomy and membrane peeling, including, when performed, air, gas, or silicone oil tamponade, cryotherapy, endolaser photocoagulation, drainage of subretinal fluid, scleral buckling, and/or removal of lens

Does Dr. Chiang accept my insurance?

Dr. Chiang accepts most major insurance plans. Important: Please contact the office before your appointment to verify that your specific plan and network are accepted.

What insurance plans does Dr. Chiang accept in Plymouth Meeting, PA?

Dr. Chiang in Plymouth Meeting, PA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.

Top Insurances

Aetna
Blue Cross Blue Shield
Blue Cross Blue Shield of Illinois
Cigna Group
CVS Health (formerly Aetna)
Elevance Health Inc. (formerly Anthem)
Highmark Health
Jefferson Health
Medicare
UnitedHealth Group

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Where is Dr. Chiang's office located?

Dr. Allen Chiang's Primary Practice

4060 Butler Pike Ste 200

Plymouth Meeting, PA 19462

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Dr. Allen Chiang's Practice 2

840 Walnut St Ste 1020

Philadelphia, PA 19107

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Dr. Allen Chiang's Practice 3

5325 Northgate Dr Ste 103

Bethlehem, PA 18017

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What hospitals are Dr. Chiang affiliated with?

Dr. Chiang has admitting privileges at the following hospitals:

Wills Eye Hospital,Philadelphia, PA

Recognitions

Castle Connolly Doctor’s Choice Awards

Doctor’s Choice - 2025

Among the most nominated for the Castle Connolly Top Doctor recognition in 2025

Doctor’s Choice - Last 5 Years

Among the most nominated for the Castle Connolly Top Doctor recognition in the last 5 years

What is Dr. Chiang's NPI number?A National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.

Dr. Chiang's National Provider Identifier (NPI) number is 1326212960.

What common questions do patients ask about Dr. Chiang?

Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Chiang

What is Dr. Allen Chiang's specialty?

Dr. Chiang is an Ophthalmologist near Plymouth Meeting, PA.

What does an Ophthalmologist do?

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.

Is Dr. Allen Chiang affiliated with a ranked Castle Connolly Top Hospital?

No, Dr. Chiang is not affiliated with a Castle Connolly Top Hospital, but is affiliated with the following hospitals: Wills Eye 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

When to see an Ophthalmologist?: Guides for symptoms, conditions, and treatments

Understand your symptoms and know when it’s time to see an Ophthalmologist. Explore 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.