Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. MARK WILLIAM SISKO DDS
NPI 1134112493
Dentist - General Practice in Sea Isle City, NJ

Q: What is Mark Sisko's NPI number?

The NPI number for Mark Sisko is 1134112493. It was assigned to this individual provider in the NPPES registry on August 23, 2005.

Q: What is Mark Sisko's specialty?

The primary specialty registered for this NPI is Dentist, specializing in General Practice, with taxonomy code 1223G0001X.

Q: When was this NPI record last updated?

The NPPES record for Mark Sisko was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 43 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since August 23, 2005

4311 LANDIS AVE, SEA ISLE CITY, NJ 08243(609) 263-4201(609) 263-0433 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 23, 2026.

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About Dr. Mark William Sisko Dds NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. MARK WILLIAM SISKO DDS (NPI 1134112493) is an individual general practice provider in Sea Isle City, New Jersey, licensed in New Jersey (22D101282800) and active in the NPI registry since August 2005.

NPPES Registry Identity

NPI1134112493

Entity TypeIndividualMale

Primary Taxonomy1223G0001X

Provider Legal NameDR. MARK WILLIAM SISKOCredential: DDS

Location Address4311 LANDIS AVESea Isle City, NJ 08243-1838

Mailing Address4311 Landis Ave, P.o. Box No. 643Sea Isle City, NJ 08243-1838 · (609) 263-4201 · Fax (609) 263-0433

Phone(609) 263-4201

Fax(609) 263-0433

Sole ProprietorNo

Enumeration DateAugust 23, 2005

Last NPPES UpdateJuly 13, 2026

✔ NPI 1134112493 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentist · General PracticeDental Providers

Taxonomy Code1223G0001X

License✔ Licensed in NJ · 22D101282800

Definition

A general dentist is the primary dental care provider for patients of all ages. The general dentist is responsible for the diagnosis, treatment, management and overall coordination of services related to patients' oral health needs.

4311 LANDIS AVE, Sea Isle City, NJ 08243

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Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mark Sisko's NPI number?

The NPI number for Mark Sisko is 1134112493. It was assigned to this individual provider in the NPPES registry on August 23, 2005.

Where is Mark Sisko located?

Mark Sisko practices at 4311 Landis Ave, Sea Isle City, NJ 08243. The listed phone number is (609) 263-4201.

What is Mark Sisko's specialty?

The primary specialty registered for this NPI is Dentist, specializing in General Practice, with taxonomy code 1223G0001X.

When was this NPI record last updated?

The NPPES record for Mark Sisko was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 43 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.