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Cornea and External Diseases Specialists in Massachusetts

Data updated monthly · Last refresh October 2026

10 Cornea and External Diseases Specialist providers practice in Massachusetts. The largest concentration is in Boston. Profiles include federal Open Payments records of money received from drug and device companies in 2025. Listings are drawn from federal public records and are not endorsements.

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Cornea and External Diseases Specialist by city in Massachusetts

Choose a city to see providers there.

Cornea and External Diseases Specialist in Boston6 providers
Cornea and External Diseases Specialist in Andover1 providers
Cornea and External Diseases Specialist in Waltham1 providers
Cornea and External Diseases Specialist in Burlington1 providers
Cornea and External Diseases Specialist in Brookline1 providers

Where Cornea and External Diseases Specialists in Massachusetts practice

From CMS Medicare enrollment records covering 7 of the 10 providers listed here (70%). Providers who do not bill Medicare are not included in these figures.

Largest practice groups

Group (as registered with Medicare)Cornea and External Diseases SpecialistsAll clinicians in groupMain city
Ophthalmic Consultants of Boston Inc.368Boston
Massachusetts Eye and Ear Associates, Inc.2430Boston

Hospitals where they hold privileges

HospitalCityOwnershipCMS star ratingCornea and External Diseases Specialists affiliated
Massachusetts Eye and Ear Infirmary -BostonNonprofitNot rated3
Massachusetts General HospitalBostonNonprofit5 of 52

Sources: CMS Doctors and Clinicians (August 2026) and Facility Affiliation files (August 2026); hospital ownership type and overall star rating from CMS Hospital General Information (July 2026). A clinician in several groups is counted once, in the largest group they bill through. Ownership type is what the hospital reports to CMS; it does not show private equity or other investor ownership. How we build this directory.

Cornea and External Diseases Specialist providers in Massachusetts

Listed by city, largest first. Payment figures come from the federal Open Payments program, which requires drug and device companies to report what they pay physicians for consulting, speaking, meals, travel and royalties. A disclosed payment is a financial relationship, not evidence of wrongdoing, and many totals reflect a single meal. Figures cover calendar year 2025.

Dr. Prachi Dua, M.D.
Andover, MA · $890 in drug and device payments (2025) · (978) 475-0705
Dr. Azin Abazari, MD
Boston, MA · $216 in drug and device payments (2025) · (617) 367-4800
Dr. Jae Young You, M.D.
Boston, MA · No drug or device payments recorded (2025) · (617) 573-3202
Dr. Paul Zhou
Boston, MA · $1,073 in drug and device payments (2025) · (617) 523-7900
Dr. Sara King-sella, MD
Boston, MA · No drug or device payments recorded (2025) · (617) 667-3397
Dr. Stephan Ong Tone, MDCM, PHD, FRCSC
Boston, MA · No drug or device payments recorded (2025) · (617) 573-4443
Dr. Walid Sabbah, M.D.
Boston, MA · $398 in drug and device payments (2025) · (617) 667-7000
Dr. James Gregoire, MD
Brookline, MA · $1,234 in drug and device payments (2025) · (617) 202-2020
Dr. Naveen Rao, M.D.
Burlington, MA · $6,248 in drug and device payments (2025) · (781) 744-8000
Dr. Crystal Zhang, MD
Waltham, MA · $320 in drug and device payments (2025) · (781) 487-2200

Common questions

How many Cornea and External Diseases Specialist providers are in Massachusetts?

There are 10 Cornea and External Diseases Specialist providers with active NPI records practicing in Massachusetts, according to federal NPPES data refreshed monthly.

Which cities in Massachusetts have the most Cornea and External Diseases Specialist providers?

Boston (6), Andover (1), Waltham (1) have the highest concentration of Cornea and External Diseases Specialist providers in Massachusetts.

Where does this data come from?

Provider counts and profiles come from the federal NPPES registry and CMS Doctors and Clinicians files. Payment figures come from the CMS Open Payments program for calendar year 2025. The directory refreshes monthly.

Which hospitals do Cornea and External Diseases Specialists in Massachusetts work at?

According to CMS facility affiliation records, the Massachusetts hospitals where the most Cornea and External Diseases Specialists hold privileges are Massachusetts Eye and Ear Infirmary - in Boston; Massachusetts General Hospital in Boston.

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Related

Sources: NPPES (CMS), Doctors and Clinicians national files, CMS Open Payments 2025. Updated monthly. Records are public federal data and are not verified credentials, licensure checks, or endorsements. This directory is informational and not medical advice. How we build this directory. Are you a Cornea and External Diseases Specialist in Massachusetts? Get featured.