Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Marlon R Koenigsberg, PHD

Clinical Psychologist in Williamsville, NY · enumerated 2006.

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

National Provider Identifier

1538112164

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Registry record

Entity type Individual (Type 1)

Name Dr. Marlon R Koenigsberg

Credential PHD

Sex Male

Practice address 850 Hopkins Road, Williamsville, NY, 14221

Phone (716) 688-9641

Fax (716) 688-9645

Enumeration date May 17, 2006

Last updated in NPPES Nov 9, 2022

Taxonomy & licenses

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 008415 (NY) Primary

PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD credential

Other identifiers

Identifier	Type	State	Issuer
00930589	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 specialty is Marlon Koenigsberg?

Marlon Koenigsberg is registered in NPPES with the primary taxonomy of Clinical Psychologist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-11-09.