Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Jennifer L Twardzik, DO

Internal Medicine Physician in Marmora, NJ · enumerated 2006.

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

National Provider Identifier

1619065075

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Registry record

Entity type Individual (Type 1)

Name Jennifer L Twardzik

Credential DO

Sex Female

Practice address 4 W Roosevelt Blvd Ste 11, Marmora, NJ, 08223

Phone (609) 814-9550

Fax (609) 814-9554

Enumeration date Oct 11, 2006

Last updated in NPPES Mar 5, 2026

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 25MB07015800 (NJ) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier	Type	State	Issuer
8205507	Medicaid	NJ	-

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 Jennifer Twardzik practice?

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

What is the NPI number for Jennifer Twardzik?

The National Provider Identifier (NPI) for Jennifer Twardzik is 1619065075, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Gregory Herman Family Medicine Physician · Marmora, NJ NPI 1760465603

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-03-05.