Dr. John K. Chan
- Gender: Male
- Experience: 24 years
- Graduated from: New York Medical College
- Graduation year: 1997
- Sole propriator: No
- NPI: 1609928837
Dr. John K. Chan M.D.
Ophthalmologist
He is located at 3553 Whipple Road in Union City, CA 94587. Can help patients with the following: Blepharitis, Corneal Ulcer, Eye Strain, LASIK, Oculomotor Dysfunction, Uveitis. His National Provider Identifier (NPI) number is 1609928837. Appointment can be made via the phone number (510) 454-1000. He is affiliated with 1 practices.
Conditions treated
Dr. John Kok-Sen Chan, being an ophthalmologist, treats the following conditions. Please be advised that this list may not be complete. For the full list of conditions treated, consult directly with Dr. John K. Chan.
- Astigmatism
- Binocular Dysfunction (BVD)
- Blepharitis
- Blindness
- Cataracts
- Chalazion
- Color Blindness
- Corneal Disease
- Corneal Ulcer
- Crossed Eyes
- Diabetic Retinopathy
- Double Vision
- Dry Eyes
- Esotropia
- Exotropia
- Eye Floaters
- Eye Strain
- Farsightedness
- Glaucoma
- Herpes of the Eye
- Hypertropia
- Keratitis
- Keratoconus
- LASIK
- Lazy Eye
- Macular Degeneration
- Nearsightedness
- Oculomotor Dysfunction
- Optic Neuritis
- Pink Eye
- Presbyopia
- Retinal Detachment
- Retinitis Pigmentosa (RP)
- Scleritis
- Sty
- Subconjunctival Hemorrhage
- Tunnel Vision
- Usher Syndrome
- Uveitis
Procedures Performed by Dr. John K. Chan
Medicare Enrollment
Dr. John K. Chan is enrolled to bill Medicare as a Practitioner - Ophthalmology .
Bills through: Permanente Medical Group Inc
Based on Medicare's public enrollment records as of Sep 29, 2026. This reflects Medicare fee-for-service enrollment only and says nothing about other insurance, quality, outcomes, or board certification.
Payments received
Drug payment
| Tesaro | $318 |
| Clovis Oncology | $155 |
| Horizon Pharma | $10 |
Other
| Food and Beverage | $485 |
Studies
NEW YORK MEDICAL COLLEGE
Graduated in 1997
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- Gender: Female
- Address: 3553 Whipple Road Union City, 94587, CA
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- Address: 3553 Whipple Road Union City, 94587, CA
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- Gender: Female
- Address: 3553 Whipple Road Union City, 94587, CA
- Gender: Female
- Address: 3553 Whipple Road Union City, 94587, CA
- Gender: Male
- Address: 3553 Whipple Road Union City, 94587, CA
Questions & Answers
What conditions does Dr. John Kok-Sen Chan treat?
Dr. John Kok-Sen Chan provides treatment for Blepharitis, Corneal Ulcer, Eye Strain, LASIK, Oculomotor Dysfunction, Uveitis. For the full list see this list.
Where can you meet with Dr. John Kok-Sen Chan?
Dr. John Kok-Sen Chan's office is located at 3553 Whipple Road in Union City, CA 94587.
Does Dr. John Kok-Sen Chan have affiliation with practices?
Dr. John Kok-Sen Chan is affiliated with Kaiser Permanente Union City Medical Offices.