Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Mark Kwalbrun, MD

Individual provider Diagnostic Radiology Physician · NPI 1811997042

Mark Kwalbrun, MD practises Diagnostic Radiology in Watertown, New York. Graduated from State University of New York Downstate Medical Center in 1997, 29 years ago. Practices with Samaritan Medical Center, a 158-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
29
Trained at
State University of New York Downstate Medical Center
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

1571 Washington St Ste 101
Watertown, NY 13601-9304 Not confirmed with CMS for 12 years — call before visiting
Phone: (315) 786-5000
Fax: (315) 786-5001
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X · Licence 225726 (NY)

Record details

NPI number1811997042
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJuly 29, 2005
Last updated in NPPESJanuary 15, 2014

Medicare enrollment

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

Medicare specialtyDIAGNOSTIC RADIOLOGY
Medical schoolSTATE UNIVERSITY OF NEW YORK DOWNSTATE MEDICAL CENTER
Graduated 1997 (29 years in practice)
Group practice Samaritan Medical Center — 158 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations6 on file with Medicare

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 patients934
Services billed 1,781 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

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. Those with a page here are linked.

Colleagues at Samaritan Medical Center

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 158 clinicians in the practice; 12 are shown here.

Other providers in Watertown