Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

The Retina Group of Washington, Pllc

Ophthalmology Physician in Westminster, MD · enumerated 2025 · authorized official Steven Madreperla, Ao.

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

National Provider Identifier

1356152565

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Registry record

Entity type Organization (Type 2)

Legal business name The Retina Group of Washington, Pllc

Practice address 698 Corporate Center Ct # 1f, Westminster, MD, 21157

Phone (410) 377-7611

Enumeration date Jan 16, 2025

Last updated in NPPES Jan 16, 2025

Taxonomy & classification

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians Primary

207WX0107X Retina Specialist (Ophthalmology) Physician Allopathic & Osteopathic Physicians Secondary

Authorized official

Name Steven Madreperla

Title Ao

Phone (908) 458-8333

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 type of organization is The Retina Group of Washington, Pllc?

The Retina Group of Washington, Pllc is registered in NPPES as a Ophthalmology Physician (its primary provider taxonomy).

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.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-01-16.