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Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Charles Wang, MD, PA

Ophthalmology Physician in Wilmington, DE · enumerated 2007 · authorized official Renee Refalski, Billing.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1306903364

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Registry record

Entity type Organization (Type 2)
Legal business name Charles Wang, MD, PA
Practice address 1700 Wawaset St, Suite 200, Wilmington, DE, 19806
Phone (302) 655-1500
Fax (302) 655-4084
Enumeration date Jan 2, 2007
Last updated in NPPES Oct 30, 2024

Taxonomy & classification

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Renee Refalski
Title Billing
Phone (302) 655-1500

Other identifiers

Identifier Type State Issuer
0000188202 Medicaid DE -
3885003 Medicaid NJ -
0018777480001 Medicaid PA -

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What is a Type 2 NPI?
A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.
What type of organization is Charles Wang, MD, PA?
Charles Wang, MD, PA is registered in NPPES as a Ophthalmology Physician (its primary provider taxonomy).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-10-30.