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

Ryan Steven Hirschfeld, MD

Individual provider Internal Medicine Physician · NPI 1831459874

Ryan Steven Hirschfeld, MD is an Internal Medicine Physician in Stony Brook, New York. Practices as a sole proprietor. Licensed in Maryland, New York and Rhode Island.

Licensed in
MD, NY, RI
In the registry since
2012
Specialties on file
7
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

101 Nicolls Rd Fl HSC11
Stony Brook, NY 11794-2782
Phone: (631) 444-2648
Fax: (631) 444-2894
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Specialties & licences

Pediatrics Physician (primary) Taxonomy 208000000X · Licence 312909 (NY)
Internal Medicine Physician Taxonomy 207R00000X · Licence MD16643 (RI)
Internal Medicine Physician Taxonomy 207R00000X · Licence LP02555 (RI)
Internal Medicine Physician Taxonomy 207R00000X · Licence D0082449 (MD)
Pediatrics Physician Taxonomy 208000000X · Licence MD16643 (RI)
Pediatrics Physician Taxonomy 208000000X · Licence D0082449 (MD)
Pediatrics Physician Taxonomy 208000000X · Licence LP02555 (RI)

Record details

NPI number1831459874
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMay 24, 2012
Last updated in NPPESApril 29, 2022
Certification dateApril 29, 2022
Mailing address5 Heritage Ln, Miller Place, NY 11764-3221

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