Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Mason H Long MD PA

Organization Internal Medicine Physician · NPI 1710204474

Mason H Long MD PA is an Internal Medicine Physician in St Augustine, Florida. Registered with an NPI since 2010.

In the registry since
2010
What do these letters mean?
PA — Professional association
A form of business registration, not a clinical qualification.

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Practice location Address checks out

301 Health Park Blvd Ste 325
St Augustine, FL 32086-5771
Phone: (904) 824-6164
Fax: (904) 824-0365
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X

Record details

NPI number1710204474
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Mason Long — President/Owner · (904) 824-6164
NPI enumeratedApril 21, 2010
Last updated in NPPESApril 21, 2010
Mailing address301 Health Park Blvd Ste 325, St Augustine, FL 32086-5771

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