Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Christopher Adi Tan, MD

Pediatric Cardiology Physician in Long Beach, CA · enumerated 2005 · practices at Mnicoleirwin Inc.

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

National Provider Identifier

1912902602

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Registry record

Entity type Individual (Type 1)

Name Christopher Adi Tan

Credential MD

Sex Male

Practice address 2701 Atlantic Ave, Long Beach, CA, 90806

Phone (714) 377-6993

Fax (562) 427-1987

Enumeration date Jun 17, 2005

Last updated in NPPES Mar 31, 2026

Taxonomy & licenses

2080P0202X Pediatric Cardiology Physician Allopathic & Osteopathic Physicians · License M-1618 (GU) Secondary

2080P0202X Pediatric Cardiology Physician Allopathic & Osteopathic Physicians · License A70509 (CA) 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

What specialty is Christopher Tan?

Christopher Tan is registered in NPPES with the primary taxonomy of Pediatric Cardiology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-03-31.