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John W. Butler, M.D.

Ophthalmology Physician in Salisbury, MD · enumerated 2005 · practices at Retina Consultants of Delmarva PA.

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

National Provider Identifier

1174521264

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Registry record

Entity type Individual (Type 1)
Name John W. Butler
Credential M.D.
Sex Male
Practice address 6511 Deer Pointe Drive, Salisbury, MD, 21804
Phone (410) 546-8037
Fax (410) 546-8038
Enumeration date Jul 12, 2005
Last updated in NPPES Sep 28, 2020

Taxonomy & licenses

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License C1-0005940 (DE) Secondary
207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License D0055876 (MD) Secondary
207WX0107X Retina Specialist (Ophthalmology) Physician Allopathic & Osteopathic Physicians · License C1-0005940 (DE) Secondary
207WX0107X Retina Specialist (Ophthalmology) Physician Allopathic & Osteopathic Physicians · License D0055876 (MD) Secondary
207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License D-0055876 (MD) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
0001091501 Medicaid DE -
803600400 Medicaid MD -

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 John Butler?
The National Provider Identifier (NPI) for John Butler is 1174521264, a Type 1 (individual) record in the CMS NPPES registry.
Where does John Butler practice?
The practice location on file with NPPES is in Salisbury, MD. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-09-28.