Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Leonidas Dimitrios Arvanitis, M.D.

Anatomic Pathology & Clinical Pathology Physician in Duarte, CA · enumerated 2008.

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

National Provider Identifier

1669628764

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Registry record

Entity type Individual (Type 1)

Name Dr. Leonidas Dimitrios Arvanitis

Credential M.D.

Sex Male

Practice address 1500 Duarte Rd, Duarte, CA, 91010

Phone (626) 256-4673

Enumeration date Aug 8, 2008

Last updated in NPPES Mar 17, 2018

Taxonomy & licenses

207ZN0500X Neuropathology Physician Allopathic & Osteopathic Physicians · License A152120 (CA) Secondary

207ZP0102X Anatomic Pathology & Clinical Pathology Physician Allopathic & Osteopathic Physicians · License 125053987 (IL) Secondary

207ZP0102X Anatomic Pathology & Clinical Pathology Physician Allopathic & Osteopathic Physicians · License A152120 (CA) 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 specialty is Leonidas Arvanitis?

Leonidas Arvanitis is registered in NPPES with the primary taxonomy of Anatomic Pathology & Clinical Pathology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-03-17.