Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

John Joseph De Trolio, MD

Emergency Medicine Physician in Berkeley Heights, NJ · enumerated 2009.

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

National Provider Identifier

1396070249

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Registry record

Entity type Individual (Type 1)

Name John Joseph De Trolio

Credential MD

Sex Male

Practice address 1 Diamond Hill Rd, Berkeley Heights, NJ, 07922

Phone (908) 277-8880

Fax (908) 277-8796

Enumeration date Oct 10, 2009

Last updated in NPPES Jan 19, 2024

Taxonomy & licenses

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License MT196263 (PA) Secondary

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License 25MA11165700 (NJ) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does John De Trolio practice?

The practice location on file with NPPES is in Berkeley Heights, NJ. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for John De Trolio?

The National Provider Identifier (NPI) for John De Trolio is 1396070249, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-01-19.