Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Marco D Zarlengo, M.D.

Internal Medicine Physician in Croton on Hudson, NY · enumerated 2006.

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

National Provider Identifier

1982719894

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Registry record

Entity type Individual (Type 1)

Name Dr. Marco D Zarlengo

Credential M.D.

Sex Male

Practice address 115 Maple St, Croton on Hudson, NY, 10520

Phone (914) 271-3583

Fax (914) 271-4511

Enumeration date Aug 20, 2006

Last updated in NPPES Mar 23, 2011

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 106477-1 (NY) Primary

207RN0300X Nephrology Physician Allopathic & Osteopathic Physicians · License 106477-1 (NY) Secondary

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
00523937	Medicaid	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

What is the NPI number for Marco Zarlengo?

The National Provider Identifier (NPI) for Marco Zarlengo is 1982719894, a Type 1 (individual) record in the CMS NPPES registry.

Where does Marco Zarlengo practice?

The practice location on file with NPPES is in Croton on Hudson, NY. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-03-23.