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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Paul Marian Cisarik, MD

Internal Medicine Physician in Oxnard, CA · enumerated 2007.

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

National Provider Identifier

1952515421

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Registry record

Entity type Individual (Type 1)
Name Paul Marian Cisarik
Credential MD
Sex Male
Practice address 2361 E Vineyard Ave, Oxnard, CA, 93036
Enumeration date May 10, 2007
Last updated in NPPES Oct 12, 2017

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 57009970 (OH) Secondary
207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License C151923 (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

Is NPI 1952515421 active?
Yes — as of the latest NPPES snapshot, NPI 1952515421 is active (record last updated 2017-10-12).
How do I verify Paul Cisarik's NPI record?
Cross-check NPI 1952515421 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-10-12.