Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Marc Lindsay Napp, MD, MS
Surgery Physician in New York, NY · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1497823090
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Registry record
Entity type Individual (Type 1)
Name Dr. Marc Lindsay Napp
Credential MD, MS
Sex Male
Practice address 1425 Madison Ave, First Floor, New York, NY, 10029
Phone (212) 659-9226
Enumeration date Dec 1, 2006
Last updated in NPPES Aug 28, 2014
Taxonomy & licenses
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.
Frequently asked questions
What is the NPI number for Marc Napp?
The National Provider Identifier (NPI) for Marc Napp is 1497823090, a Type 1 (individual) record in the CMS NPPES registry.
Where does Marc Napp practice?
The practice location on file with NPPES is in New York, NY. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-08-28.