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

Sarah E. Knapp, MD

Individual provider Endocrinology, Diabetes & Metabolism Physician · NPI 1902253586

Sarah E. Knapp, MD practises Internal Medicine in Boston, Massachusetts. Graduated from George Washington University School of Medicine in 2016, 10 years ago. Practices with Joslin Clinic Inc, a 54-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Massachusetts.

Years since qualifying
10
Trained at
George Washington University School of Medicine
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

330 Brookline Ave
Boston, MA 02215-5400
Phone: (617) 667-7000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Endocrinology, Diabetes & Metabolism Physician (primary) Taxonomy 207RE0101X · Licence 268164 (MA)
Internal Medicine Physician Taxonomy 207R00000X · Licence 268164 (MA)

Record details

NPI number1902253586
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 24, 2016
Last updated in NPPESJanuary 13, 2022
Certification dateJanuary 13, 2022

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolGEORGE WASHINGTON UNIVERSITY SCHOOL OF MEDICINE
Graduated 2016 (10 years in practice)
Group practice Joslin Clinic Inc — 54 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
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 patients227
Services billed 684 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

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 Joslin Clinic Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 54 clinicians in the practice; 12 are shown here.

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