NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Mark Adam Liu, D.D.S.

Dentist in Elmhurst, NY · enumerated 2006.

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

National Provider Identifier

1013085273

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Registry record

Entity type Individual (Type 1)
Name Dr. Mark Adam Liu
Credential D.D.S.
Sex Male
Practice address Elmhurst, NY, 11373
Phone (718) 205-2888
Enumeration date Dec 4, 2006
Last updated in NPPES Jun 10, 2013

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

122300000X Dentist Dental Providers · License 051846 (NY) Primary
DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential

Other identifiers

Identifier Type State Issuer
02654479 Medicaid NY -

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.

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Frequently asked questions

Where does Mark Liu practice?
The practice location on file with NPPES is in Elmhurst, NY. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Mark Liu?
The National Provider Identifier (NPI) for Mark Liu is 1013085273, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-06-10.