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

Dr. Sheila Klassen, MD

Individual provider Student in an Organized Health Care Education/Training Program · NPI 1013375336

Dr. Sheila Klassen, MD is registered under Cardiovascular Disease (Cardiology) in Boston, Massachusetts. Qualified in 2011, 15 years ago. Practices with Brigham and Womens Physicians Organization Inc, a 2,916-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Massachusetts.

Years since qualifying
15
Licensed in
MA
In the registry since
2016
Specialties on file
2
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

Student / training record This NPI belongs to someone enrolled in a health care training programme. It carries no licence and no practice of its own, so no address or phone number is published for it.

Boston, MA

No coordinates on file. Search this address in Google Maps

Additional practice locations (1)

  • 1403 29 Street Nw, Calgary, 229 — (403) 944-8119

Specialties & licences

Cardiovascular Disease Physician (primary) Taxonomy 207RC0000X · Licence 295379 (MA)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1013375336
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorYes
NPI enumeratedFebruary 1, 2016
Last updated in NPPESJune 29, 2023
Certification dateJune 29, 2023

Medicare enrollment

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

Medicare specialtyCARDIOVASCULAR DISEASE (CARDIOLOGY)
Medical schoolOTHER
Graduated 2011 (15 years in practice)
Group practice Brigham And Womens Physicians Organization Inc — 2916 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 patients2,036
Services billed 3,419 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

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.

  • Massachusetts General Hospital Hospital · Boston, MA · listed as The General Hospital Corporation
  • Newton-Wellesley Hospital Hospital · Newton, MA · listed as Newton Wellesley Hospital
  • Brigham And Women Faulkner Hospital Hospital · Jamaica Plain, MA
  • Brigham And Women'S Hospital Hospital · Boston, MA

Also affiliated with 1 hospital, which CMS identifies by certification number only.

Colleagues at Brigham and Womens Physicians Organization Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 2916 clinicians in the practice; 12 are shown here.

Other providers in Boston