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SIEGFRIED WILLEM TJONAJONG DMD MSD
NPI 1801049234
Dentist in Ridgewood, NJ

Active since October 29, 2008
947 LINWOOD AVE STE 1, ORAL & MAXILLOFACIAL PROSTHODONTICS, RIDGEWOOD, NJ 07450(201) 670-4800(201) 670-6776 Get Directions Write a Review

NPPES record last updated: October 29, 2008. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Siegfried Willem Tjonajong Dmd Msd NPPES

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

SIEGFRIED WILLEM TJONAJONG DMD MSD (NPI 1801049234) is an individual dentist in Ridgewood, New Jersey, licensed in New Jersey (22DIO1785000) and active in the NPI registry since October 2008.

NPPES Registry Identity

NPI1801049234
Entity TypeIndividualMale
Primary Taxonomy122300000X
Provider Legal NameSIEGFRIED WILLEM TJONAJONGCredential: DMD MSD
Location Address947 LINWOOD AVE STE 1, ORAL & MAXILLOFACIAL PROSTHODONTICSRidgewood, NJ 07450-2939
Mailing Address947 Linwood Avenue Suite 1 North, Oral & Maxillofacial ProsthodonticsRidgewood, NJ 07450 · (201) 670-4800 · Fax (201) 670-6776
Phone(201) 670-4800
Fax(201) 670-6776
Sole ProprietorYes
Enumeration DateOctober 29, 2008
✔ NPI 1801049234 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyDentistDental Providers
Taxonomy Code122300000X
License✔ Licensed in NJ · 22DIO1785000
Definition
A dentist is a person qualified by a doctorate in dental surgery (D.D.S.) or dental medicine (D.M.D.), licensed by the state to practice dentistry, and practicing within the scope of that license. There is no difference between the two degrees: dentists who have a DMD or DDS have the same education. Universities have the prerogative to determine what degree is awarded. Both degrees use the same curriculum requirements set by the American Dental Association's Commission on Dental Accreditation. Generally, three or more years of undergraduate education plus four years of dental school is required to graduate and become a general dentist. State licensing boards accept either degree as equivalent, and both degrees allow licensed individuals to practice the same scope of general dentistry. Additional post-graduate training is required to become a dental specialist.
Also ListedDentist · ProsthodonticsTaxonomy 1223P0700X · License NJ-3807 (NJ)
947 LINWOOD AVE STE 1, Ridgewood, NJ 07450
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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 Siegfried Tjonajong's NPI number?

The NPI number for Siegfried Tjonajong is 1801049234. It was assigned to this individual provider in the NPPES registry on October 29, 2008.

Where is Siegfried Tjonajong located?

Siegfried Tjonajong practices at 947 Linwood Ave Ste 1 Oral & Maxillofacial Prosthodontics, Ridgewood, NJ 07450. The listed phone number is (201) 670-4800.

What is Siegfried Tjonajong's specialty?

The primary specialty registered for this NPI is Dentist with taxonomy code 122300000X.

When was this NPI record last updated?

The NPPES record for Siegfried Tjonajong was last updated on October 29, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 years 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.