Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Luis Tan, M.D.

Anesthesiology Physician in Catonsville, MD · enumerated 2005 · practices at Chesapeake Digestive Associates, PC.

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

National Provider Identifier

1578560926

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Registry record

Entity type Individual (Type 1)

Name Luis Tan

Credential M.D.

Sex Male

Practice address 700 Geipe Rd Ste 230, Catonsville, MD, 21228

Phone (410) 247-7500

Fax (410) 247-4227

Enumeration date Jun 30, 2005

Last updated in NPPES Aug 23, 2018

Taxonomy & licenses

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians · License D0058336 (MD) 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 Luis Tan?

Luis Tan is registered in NPPES with the primary taxonomy of Anesthesiology 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 2018-08-23.