WAI YIN TERESA CHANG
NPI 1104478445
Optometrist in Hagerstown, MD
About Wai Yin Teresa Chang NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WAI YIN TERESA CHANG (NPI 1104478445) is an individual optometrist in Hagerstown, Maryland, licensed in Maryland (2695) and active in the NPI registry since July 2019. She is enrolled in Medicare PECOS and is a graduate of New England College Of Optometry (2019).
NPPES Registry Identity
Specialties & Licenses
Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system.
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Wai Yin Teresa Chang is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Areas of Expertise CMS Part B claims 4
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 21740 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Wai Yin Chang's NPI number?
The NPI number for Wai Yin Chang is 1104478445. It was assigned to this individual provider in the NPPES registry on July 16, 2019.
Where is Wai Yin Chang located?
Wai Yin Chang practices at 1725 Dual Hwy # B, Hagerstown, MD 21740. The listed phone number is (301) 739-6573.
What is Wai Yin Chang's specialty?
The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.
Is Wai Yin Chang enrolled in Medicare?
Yes. Wai Yin Chang is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
What insurance does Wai Yin Chang accept?
Health plans from Blue Cross Blue Shield of Wyoming, Blue Cross and Blue Shield of Louisiana, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma and Blue Cross and Blue Shield of Texas and 1 other insurer list Wai Yin Chang as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Wai Yin Chang was last updated on May 1, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.
