NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Corey Mark Leidenfrost, MA

Counselor in Niagara Falls, NY · enumerated 2007.

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

National Provider Identifier

1235289083

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Corey Mark Leidenfrost
Credential MA
Sex Male
Practice address 620 Tronolone Pl, Niagara Falls, NY, 14301
Phone (716) 205-0825
Fax (716) 205-0824
Enumeration date Jan 12, 2007
Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

101Y00000X Counselor Behavioral Health & Social Service Providers Primary

Other identifiers

Identifier Type State Issuer
00030241501 Other NY UNIVERA
000506354005 Other NY COMMUNITY BLUE

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 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 Corey Leidenfrost?
Corey Leidenfrost is registered in NPPES with the primary taxonomy of Counselor. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

Browse all →

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