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

M. Sheila Donnelly, MD

Individual provider Medical Oncology Physician · NPI 1942297528

M. Sheila Donnelly, MD is a Hematology/Oncology in Gardner, Massachusetts. Graduated from Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University in 1974, 52 years ago. Practices with Henry Heywood Memorial Hospital, a 117-clinician group and accepts Medicare assignment. Licensed in Massachusetts.

Years since qualifying
52
Trained at
Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University
Licensed in
MA
In the registry since
2005
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

242 Green St
Gardner, MA 01440-1336
Phone: (978) 630-6457
Fax: (978) 630-6158
Show map & directions

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

Specialties & licences

Medical Oncology Physician (primary) Taxonomy 207RX0202X · Licence 41136 (MA)

Record details

NPI number1942297528
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 29, 2005
Last updated in NPPESJuly 13, 2026

Medicare enrollment

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

Medicare specialtyHEMATOLOGY/ONCOLOGY
Medical schoolCLVLND CLINIC LERNER COLLEGE OF MED OF CASE WSTN RSV UNIVERSITY
Graduated 1974 (52 years in practice)
Group practice Henry Heywood Memorial Hospital — 117 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount