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

Diana Marie Sustar, MD

Individual provider Obstetrics & Gynecology Physician · NPI 1659500825

Diana Marie Sustar, MD practises Obstetrics/Gynecology in Glens Falls, New York. Graduated from Northeastern Ohio University College of Medicine in 2009, 17 years ago. Practices with Hudson Headwaters Health Network, a 218-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in New York.

Years since qualifying
17
Trained at
Northeastern Ohio University College of Medicine
Licensed in
NY
In the registry since
2009
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

90 S St
Glens Falls, NY 12801-4328
Phone: (518) 792-7841
Fax: (518) 932-0289
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1299 Route 9, Gansevoort, NY 12831-1560 — (518) 761-6961

Specialties & licences

Obstetrics & Gynecology Physician (primary) Taxonomy 207V00000X · Licence 268628 (NY)

Record details

NPI number1659500825
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 9, 2009
Last updated in NPPESMarch 13, 2026
Certification dateMarch 13, 2026

Medicare enrollment

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

Medicare specialtyOBSTETRICS/GYNECOLOGY
Medical schoolNORTHEASTERN OHIO UNIVERSITY COLLEGE OF MEDICINE
Graduated 2009 (17 years in practice)
Group practice Hudson Headwaters Health Network — 218 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients32
Services billed 55 a service is one billed item, such as a visit, a test or a procedure
Average patient age70

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Hudson Headwaters Health Network

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 218 clinicians in the practice; 12 are shown here.

Other providers in Glens Falls