Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Leon S Harris, MD

Pulmonary Disease Physician in West Nyack, NY · enumerated 2005.

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

National Provider Identifier

1881688851

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Leon S Harris

Credential MD

Sex Male

Practice address 2 Crosfield Ave, Suite 318, West Nyack, NY, 10994

Phone (845) 353-5600

Fax (845) 353-5668

Enumeration date Sep 7, 2005

Last updated in NPPES Jan 2, 2019

Taxonomy & licenses

207RP1001X Pulmonary Disease Physician Allopathic & Osteopathic Physicians · License 135143 (NY) 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
123213	Other	-	AETNA/USHC
2900090	Other	-	GHI
OX1379	Other	-	HIP
0672649005	Other	-	CIGNA HMO, POS
0D0735	Other	-	HEALTHNET OF NORTHEAST
132995699	Other	-	CIGNA PPO
132995699	Other	-	FIDELIS (MEDICAID HMO)
132995699	Other	-	INDECS(ORANGE-ULSTER SCHL
00913240	Medicaid	NY	-
132995699	Other	-	HEALTH NOW
132995699	Other	-	LOCAL 1199
132995699	Other	-	MAGNACARE PPO
132995699	Other	-	FAM HEALTH PLUS(HUDSON HP
4458461	Other	-	AETNA
58A091	Other	-	BC/BS EMPIRE
132995699	Other	-	HUDSON HEALTH PLAN
132995699	Other	-	BEECH STREET NETWORK
132995699	Other	-	HORIZON HEALTHCARE OF 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.

Read the full guide → Validate an NPI →

Frequently asked questions

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.

What specialty is Leon Harris?

Leon Harris is registered in NPPES with the primary taxonomy of Pulmonary Disease Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-01-02.