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Dr. Mason Hoyt Long

Internal Medicine Physician in Saint Augustine, FL · enumerated 2006 · practices at Mason H Long MD PA.

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

National Provider Identifier

1790854537

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Registry record

Entity type Individual (Type 1)
Name Dr. Mason Hoyt Long
Sex Male
Practice address 301 Health Park Blvd Ste 325, Saint Augustine, FL, 32086
Phone (904) 824-6164
Fax (904) 824-0365
Enumeration date Nov 7, 2006
Last updated in NPPES Apr 21, 2010

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License ME0055529 (FL) Primary

Other identifiers

Identifier Type State Issuer
038939100 Medicaid FL -

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

Where does Mason Long practice?
The practice location on file with NPPES is in Saint Augustine, FL. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Mason Long?
The National Provider Identifier (NPI) for Mason Long is 1790854537, 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 2010-04-21.