Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Daniel P. Johnston, O.D.
Optometrist in West Chester, PA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1831161744
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Registry record
Entity type Individual (Type 1)
Name Dr. Daniel P. Johnston
Credential O.D.
Sex Male
Practice address 923 Paoli Pike, West Chester, PA, 19380
Phone (610) 692-8300
Fax (610) 692-6007
Enumeration date Feb 3, 2006
Last updated in NPPES Jan 7, 2014
Taxonomy & licenses
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses.
About the OD credential
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.
Frequently asked questions
What is the NPI number for Daniel Johnston?
The National Provider Identifier (NPI) for Daniel Johnston is 1831161744, a Type 1 (individual) record in the CMS NPPES registry.
Where does Daniel Johnston practice?
The practice location on file with NPPES is in West Chester, PA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Chester County Opticians Inc Eyewear Supplier · West Chester, PA NPI 1174589733 Barbara Karagiannopoulos Optometrist · West Chester, PA NPI 1295778405 Chester County Opticians, Inc Optometrist · West Chester, PA NPI 1013926146 Eye Care Associates of Pennsylvania, P.C. Optometrist · West Chester, PA NPI 1124577341 Eye Care Associate of Pennsylvania Optometrist · West Chester, PA NPI 1861944522 Myeyedr Optometry of Pennsylvania, LLC Optometrist · West Chester, PA NPI 1245793264
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-01-07.