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

Dr. Zachary Mark Mashaw, MD

Individual provider Family Medicine Physician · NPI 1912499146

Dr. Zachary Mark Mashaw, MD is a Family Practice in Ogdensburg, New York. Graduated from State University of Ny Upstate Medical University in 2018, 8 years ago. Practices with St Lawrence County, a 2-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
8
Trained at
State University of Ny Upstate Medical University
Licensed in
NY
In the registry since
2018
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

921 State St
Ogdensburg, NY 13669-3347
Phone: (315) 393-9268
Fax: (315) 393-3541
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 304188 (NY)

Record details

NPI number1912499146
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 4, 2018
Last updated in NPPESApril 11, 2023
Certification dateApril 11, 2023

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolSTATE UNIVERSITY OF NY UPSTATE MEDICAL UNIVERSITY
Graduated 2018 (8 years in practice)
Group practice St Lawrence County — 2 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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