Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Marc Louis Otten, M.D.

Neurological Surgery Physician in Harrison, NY · enumerated 2008.

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

National Provider Identifier

1467611889

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Registry record

Entity type Individual (Type 1)

Name Dr. Marc Louis Otten

Credential M.D.

Sex Male

Practice address 500 Mamaroneck Ave, Harrison, NY, 10528

Phone (203) 869-1145

Fax (844) 809-3166

Enumeration date Jun 2, 2008

Last updated in NPPES Dec 19, 2022

Taxonomy & licenses

207T00000X Neurological Surgery Physician Allopathic & Osteopathic Physicians · License 245024 (NY) Primary

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1467611889 active?

Yes, as of the latest NPPES snapshot, NPI 1467611889 is active (record last updated 2022-12-19).

How do I verify Marc Otten's NPI record?

Cross-check NPI 1467611889 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-12-19.