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Gregory Butler, MD, PC.

Ophthalmology Physician in Washington, DC · enumerated 2006 · authorized official Gregory Butler, Director.

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

National Provider Identifier

1750477600

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Registry record

Entity type Organization (Type 2)
Legal business name Gregory Butler, MD, PC.
Other name <Unavail>
Practice address 1647 Benning Rd Ne, Suite 205, Washington, DC, 20002
Phone (202) 397-2800
Fax (202) 397-1304
Enumeration date Oct 5, 2006
Last updated in NPPES Mar 7, 2023

Taxonomy & classification

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License MD30132 (DC) Primary

Authorized official

Name Gregory Butler
Title Director
Phone (202) 397-2800

Other identifiers

Identifier Type State Issuer
G8170001 Other DC CAREFIRST
P00059551 Other DC RAILROAD
2099146 Other DC UNITEDHEALTHCARE
385082 Other DC MAMSI
MD30132 Other DC STATE MEDICAL LICENSE
4115071 Other DC CIGNA

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.

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Frequently asked questions

What is the NPI number for Gregory Butler, MD, PC.?
The NPI for Gregory Butler, MD, PC. is 1750477600, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Gregory Butler, MD, PC.?
NPPES lists Gregory Butler (Director) as the authorized official for this organization.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-03-07.