Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Benjamin Mark Geisler, DMD

Dentist in Ossining, NY · enumerated 2013.

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

National Provider Identifier

1477893311

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Registry record

Entity type Individual (Type 1)

Name Dr. Benjamin Mark Geisler

Credential DMD

Sex Male

Practice address 165 Main St, Ossining, NY, 10562

Phone (914) 941-1263

Enumeration date Feb 28, 2013

Last updated in NPPES Feb 8, 2016

Taxonomy & licenses

122300000X Dentist Dental Providers · License 057505-1 (NY) Primary

DMD · Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees. About the DMD credential

Other identifiers

Identifier	Type	State	Issuer
03981555	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.

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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 Benjamin Geisler?

Benjamin Geisler is registered in NPPES with the primary taxonomy of Dentist. 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 2016-02-08.