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

Simon J Ostrowski, MD

Individual provider Emergency Medicine Physician · NPI 1184245979

Simon J Ostrowski, MD is an Emergency Medicine in Worcester, Massachusetts. Graduated from University of Massachusetts Medical School in 2020, 6 years ago. Practices with Umass Memorial Medical Group Inc, a 2,467-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Massachusetts and Pennsylvania.

Years since qualifying
6
Trained at
University of Massachusetts Medical School
Licensed in
MA, PA
In the registry since
2020
Specialties on file
3
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 Address checks out

55 Lake Ave N
Worcester, MA 01655-0002
Phone: (508) 421-1401
Fax: (508) 421-1490
Show map & directions

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

Additional practice locations (1)

  • 200 Lothrop St, Pittsburgh, PA 15213-2536 — (412) 647-8262

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 1021958 (MA)
Emergency Medicine Physician Taxonomy 207P00000X · Licence MD481030 (PA)
Medical Toxicology (Emergency Medicine) Physician Taxonomy 207PT0002X · Licence 1021958 (MA)

Record details

NPI number1184245979
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 3, 2020
Last updated in NPPESMarch 18, 2025
Certification dateMarch 18, 2025
Mailing addressPo Box 415348, Boston, MA 02241-5348

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Also practisesMEDICAL TOXICOLOGY
Medical schoolUNIVERSITY OF MASSACHUSETTS MEDICAL SCHOOL
Graduated 2020 (6 years in practice)
Group practice Umass Memorial Medical Group Inc — 2467 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Worcester