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

Jennifer Dale Marshak, MD

Individual provider Obstetrics & Gynecology Physician · NPI 1750365912

Jennifer Dale Marshak, MD is an Obstetrics/Gynecology in Port Jefferson, New York. Graduated from Duke University School of Medicine in 1996, 30 years ago. Practices with North Shore Hematology Oncology Associates PC, a 473-clinician group, accepts Medicare assignment and offers telehealth. Licensed in New York.

Years since qualifying
30
Trained at
Duke University School of Medicine
Licensed in
NY
In the registry since
2005
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

118 N Country Rd
Port Jefferson, NY 11777-2120
Phone: (631) 473-7171
Fax: (631) 473-4605
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Obstetrics & Gynecology Physician (primary) Taxonomy 207V00000X · Licence 211465 (NY)

Record details

NPI number1750365912
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 1, 2005
Last updated in NPPESApril 24, 2008

Medicare enrollment

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

Medicare specialtyOBSTETRICS/GYNECOLOGY
Medical schoolDUKE UNIVERSITY SCHOOL OF MEDICINE
Graduated 1996 (30 years in practice)
Group practice North Shore Hematology Oncology Associates Pc — 473 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

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