Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Leonard Michael Grancio, MS

Specialist in Bohemia, NY · enumerated 2012.

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

National Provider Identifier

1255686317

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Registry record

Entity type Individual (Type 1)

Name Mr. Leonard Michael Grancio

Credential MS

Sex Male

Practice address 45 Crossway E, Bohemia, NY, 11716

Phone (631) 218-4949

Fax (631) 567-3640

Enumeration date Jul 16, 2012

Last updated in NPPES Jul 16, 2012

Taxonomy & licenses

174400000X Specialist Other Service Providers Primary

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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 Leonard Grancio?

Leonard Grancio is registered in NPPES with the primary taxonomy of Specialist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

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Nicole Schiffmacher Physical Therapist · Bohemia, NY NPI 1073669941 Kelly Sack Pediatric Physical Therapist · Bohemia, NY NPI 1760538631 Elena Scotti Occupational Therapist · Bohemia, NY NPI 1215083662 Nysarc Inc., Suffolk Chapter Local Education Agency (LEA) · Bohemia, NY NPI 1619023371 Annette Keenan Registered Nurse · Bohemia, NY NPI 1225184500 Carolyn Nickdow Licensed Practical Nurse · Bohemia, NY NPI 1114073475 Andrea Nickdow Speech-Language Pathologist · Bohemia, NY NPI 1467508739 Steven Bender Speech-Language Pathologist · Bohemia, NY NPI 1700932977

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-07-16.