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

Dr. John A Ostuni, MD

Individual provider Internal Medicine Physician · NPI 1811985153

Dr. John A Ostuni, MD is an Internal Medicine Physician in Freeport, New York. Licensed in New York. Registered with an NPI since 2005.

Licensed in
NY
In the registry since
2005
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

155 W Merrick Rd Ste 101
Freeport, NY 11520-3743
Phone: (516) 379-3139
Fax: (516) 379-5790
Show map & directions

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 112891 (NY)
Endocrinology, Diabetes & Metabolism Physician Taxonomy 207RE0101X · Licence 112891 (NY)

Record details

NPI number1811985153
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 11, 2005
Last updated in NPPESApril 15, 2008
Mailing address155 W Merrick Rd, Ste 101, Freeport, NY 11520-3743

Other providers in Freeport