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

Harish Kumar Rengarajan, MD

Individual provider Internal Medicine Physician · NPI 1740592757

Harish Kumar Rengarajan, MD is a Hospitalist in Port Jefferson, New York. Qualified in 2005, 21 years ago. Practices with Sutter Bay Medical Foundation, a 3,762-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Massachusetts and New York.

Years since qualifying
21
Licensed in
MA, NY
In the registry since
2010
Specialties on file
3
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

75 N Country Rd
Port Jefferson, NY 11777
Phone: (631) 473-1320
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 759 Chestnut St, Springfield, MA 01199-1619 — (413) 794-4320
  • 75 N Country Rd, Port Jefferson, NY 11777 — (631) 473-1320

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 296877-1 (NY)
Internal Medicine Physician Taxonomy 207R00000X · Licence 256924 (MA)
Hospitalist Physician Taxonomy 208M00000X · Licence 256924 (MA)

Record details

NPI number1740592757
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 7, 2010
Last updated in NPPESFebruary 1, 2019

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyHOSPITALIST
Medical schoolOTHER
Graduated 2005 (21 years in practice)
Group practice Sutter Bay Medical Foundation — 3762 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Other providers in Port Jefferson