Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Andrew E Lan, MD

Internal Medicine Physician in Yonkers, NY · enumerated 2006 · practices at Montefiore Medical Center.

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

National Provider Identifier

1003856964

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Andrew E Lan

Credential MD

Sex Male

Practice address 1010 Central Park Ave, Yonkers, NY, 10704

Phone (914) 964-4000

Fax (914) 964-4044

Enumeration date Jun 8, 2006

Last updated in NPPES May 20, 2014

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 25MA07724400 (NJ) Primary

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

Other identifiers

Identifier	Type	State	Issuer
0255K1	Other	-	WELLCHOICE
0064408	Medicaid	NJ	-
P3324373	Other	NJ	OXFORD
0502624002	Other	-	CIGNA
041164	Other	-	AETNA

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

How do I verify Andrew Lan's NPI record?

Cross-check NPI 1003856964 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1003856964 active?

Yes, as of the latest NPPES snapshot, NPI 1003856964 is active (record last updated 2014-05-20).

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-05-20.