NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Marat Tselnik, DDS

Endodontics in Oregon City, OR · enumerated 2005 · practices at Access Endodontics.

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

National Provider Identifier

1578557963

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Marat Tselnik
Credential DDS
Sex Male
Practice address 912 Main St, Oregon City, OR, 97045
Phone (503) 635-3948
Fax (503) 635-1265
Enumeration date Aug 31, 2005
Last updated in NPPES Oct 7, 2016

Taxonomy & licenses

1223E0200X Endodontics Dental Providers · License D8169 (OR) Primary
DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Marat Tselnik practice?
The practice location on file with NPPES is in Oregon City, OR. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Marat Tselnik?
The National Provider Identifier (NPI) for Marat Tselnik is 1578557963, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-10-07.