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Dr. Marc David London, M.D.

Neurology Physician in West Nyack, NY · enumerated 2006.

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

National Provider Identifier

1720140767

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Registry record

Entity type Individual (Type 1)
Name Dr. Marc David London
Credential M.D.
Sex Male
Practice address 2 Crosfield Ave Ste 202, West Nyack, NY, 10994
Phone (845) 353-4344
Fax (845) 348-1873
Enumeration date Dec 15, 2006
Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License 154602 (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
00956818-03 Medicaid NY -
3850735-002 Other NY CIGNA
66D101 Other NY BLUE CHOICE
RS156 Other NY OXFORD
000000008354 Other NY GHI HMO
1000017387 Other NY AFFINITY
122304 Other NY US HEALTHCARE
4199225 Other NY AETNA
958837 Other NY MVP

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.

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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 Marc London?
Marc London is registered in NPPES with the primary taxonomy of Neurology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.