Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Andrew Tieniber, M.D.

Surgical Oncology Physician in Hackensack, NJ · enumerated 2017.

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

National Provider Identifier

1356873343

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Registry record

Entity type Individual (Type 1)

Name Dr. Andrew Tieniber

Credential M.D.

Sex Male

Practice address 30 Prospect Ave, Hackensack, NJ, 07601

Phone (551) 996-2000

Enumeration date Mar 30, 2017

Last updated in NPPES May 14, 2026

Taxonomy & licenses

2086X0206X Surgical Oncology Physician Allopathic & Osteopathic Physicians · License 25MA13133500 (NJ) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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

Is NPI 1356873343 active?

Yes, as of the latest NPPES snapshot, NPI 1356873343 is active (record last updated 2026-05-14).

How do I verify Andrew Tieniber's NPI record?

Cross-check NPI 1356873343 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-05-14.