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John E. Lahaniatis, M.D.

Radiation Oncology Physician in Dover, DE · enumerated 2005.

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

National Provider Identifier

1326023102

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Registry record

Entity type Individual (Type 1)
Name John E. Lahaniatis
Credential M.D.
Sex Male
Practice address 640 S State St Fl 1, Dover, DE, 19901
Phone (302) 674-4401
Fax (302) 674-4129
Enumeration date Dec 14, 2005
Last updated in NPPES Aug 2, 2022

Taxonomy & licenses

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License C1-0005989 (DE) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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.

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Frequently asked questions

What is the NPI number for John Lahaniatis?
The National Provider Identifier (NPI) for John Lahaniatis is 1326023102, a Type 1 (individual) record in the CMS NPPES registry.
Where does John Lahaniatis practice?
The practice location on file with NPPES is in Dover, DE. 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 2022-08-02.