Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Farra Marlene Isaacson, DDS

Dentist in Holtsville, NY · enumerated 2006.

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

National Provider Identifier

1376515387

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Registry record

Entity type Individual (Type 1)

Name Dr. Farra Marlene Isaacson

Credential DDS

Sex Female

Practice address 1150 Portion Rd, Suite 15, Holtsville, NY, 11742

Phone (631) 696-3820

Fax (631) 696-7780

Enumeration date Feb 3, 2006

Last updated in NPPES Nov 5, 2020

Taxonomy & licenses

122300000X Dentist Dental Providers · License 049280 (NY) Primary

DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS 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

Where does Farra Isaacson practice?

The practice location on file with NPPES is in Holtsville, NY. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Farra Isaacson?

The National Provider Identifier (NPI) for Farra Isaacson is 1376515387, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-11-05.