Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. John Vincent Louis, DMD LLC
Periodontics in Easton, MD · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1639258965
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Registry record
Entity type Individual (Type 1)
Name Dr. John Vincent Louis
Credential DMD LLC
Sex Male
Practice address 218 Bay Street, Easton, MD, 21601
Phone (410) 820-9599
Fax (410) 820-8786
Enumeration date Nov 6, 2006
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
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
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is John Louis?
John Louis is registered in NPPES with the primary taxonomy of Periodontics. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.