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

Maryellen Sun, MD

Individual provider Diagnostic Radiology Physician · NPI 1861661092

Maryellen Sun, MD practises Diagnostic Radiology in Boston, Massachusetts. Graduated from Harvard Medical School in 2002, 24 years ago. Practices with Schatzki Associates Inc, a 19-clinician group and accepts Medicare assignment. Licensed in Massachusetts.

Years since qualifying
24
Trained at
Harvard Medical School
Licensed in
MA
In the registry since
2008
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Partly verified

Some contact details are missing from the federal record.

Beth Israel Deaconess Medical Center 330 Brookline Ave
Boston, MA 02215 Not confirmed with CMS for 15 years — call before visiting
Phone: (617) 754-2521
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X · Licence 234487 (MA)

Record details

NPI number1861661092
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 21, 2008
Last updated in NPPESAugust 2, 2011

Medicare enrollment

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

Medicare specialtyDIAGNOSTIC RADIOLOGY
Medical schoolHARVARD MEDICAL SCHOOL
Graduated 2002 (24 years in practice)
Group practice Schatzki Associates Inc — 19 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 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 patients356
Services billed 458 a service is one billed item, such as a visit, a test or a procedure
Average patient age77

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 Schatzki Associates Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 19 clinicians in the practice; 11 are shown here.

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