Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mark Steven Offenback, DDS PA

General Practice Dentistry in Longwood, FL · enumerated 2006.

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

National Provider Identifier

1205847621

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Registry record

Entity type Individual (Type 1)

Name Dr. Mark Steven Offenback

Credential DDS PA

Sex Male

Practice address 686 Hunt Club Blvd, Suite #100, Longwood, FL, 32779

Phone (407) 869-7333

Fax (407) 869-5720

Enumeration date Aug 10, 2006

Last updated in NPPES May 16, 2013

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License DN10359 (FL) Primary

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 Mark Offenback practice?

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

What is the NPI number for Mark Offenback?

The National Provider Identifier (NPI) for Mark Offenback is 1205847621, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-05-16.