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

Mr. Mark Edward Bertsch, FNP

Individual provider Family Nurse Practitioner · NPI 1649005620

Mr. Mark Edward Bertsch, FNP is a Nurse Practitioner in Port Jefferson, New York. Qualified in 2024, 2 years ago. Practices with Southwest Suffolk Medical PC, a 200-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
2
Licensed in
NY
In the registry since
2024
What do these letters mean?
FNP — Family Nurse Practitioner
A nurse practitioner who treats patients of all ages, much like a family doctor.

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Practice location Address checks out

200 Belle Terre Rd
Port Jefferson, NY 11777-1928
Phone: (631) 474-6000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence 354320 (NY)

Record details

NPI number1649005620
Entity typeIndividual (Type 1)
GenderMale
Credentials FNP
Sole proprietorYes
NPI enumeratedSeptember 7, 2024
Last updated in NPPESSeptember 9, 2024
Certification dateSeptember 9, 2024

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2024 (2 years in practice)
Group practice Southwest Suffolk Medical Pc — 200 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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