Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Clifford Sebastian, MD

Cardiovascular Disease Physician in Chester, NJ · enumerated 2005 · practices at Lawrence C. Antonucci MD LLC.

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

National Provider Identifier

1164409538

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Registry record

Entity type Individual (Type 1)

Name Clifford Sebastian

Credential MD

Sex Male

Practice address 415 Route 24, Suite E, Chester, NJ, 07930

Phone (908) 879-1500

Enumeration date Dec 28, 2005

Last updated in NPPES Mar 10, 2014

Taxonomy & licenses

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License MD11951 (RI) Secondary

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License 25MA08227500 (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

How do I verify Clifford Sebastian's NPI record?

Cross-check NPI 1164409538 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1164409538 active?

Yes, as of the latest NPPES snapshot, NPI 1164409538 is active (record last updated 2014-03-10).

Other providers at this practice address

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Lawrence C. Antonucci MD LLC Cardiovascular Disease Physician · Chester, NJ NPI 1023092368 Lawrence Antonucci Cardiovascular Disease Physician · Chester, NJ NPI 1083684914

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-03-10.