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

Kelsey Sack, MD/PHD

Individual provider Pulmonary Disease Physician · NPI 1710415344

Kelsey Sack, MD/PHD is an Internal Medicine in Boston, Massachusetts. Graduated from Boston University School of Medicine in 2017, 9 years ago. Practices with Harvard Medical Faculty Phys at Beth Israel Deaconess Med Ctr Inc, a 1,676-clinician group and accepts Medicare assignment. Licensed in Massachusetts.

Years since qualifying
9
Trained at
Boston University School of Medicine
Licensed in
MA
In the registry since
2017
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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

Pulmonary Disease Physician (primary) Taxonomy 207RP1001X · Licence 272220 (MA)

Record details

NPI number1710415344
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD/PHD
Sole proprietorNo
NPI enumeratedMay 26, 2017
Last updated in NPPESNovember 13, 2025
Certification dateNovember 13, 2025

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolBOSTON UNIVERSITY SCHOOL OF MEDICINE
Graduated 2017 (9 years in practice)
Group practice Harvard Medical Faculty Phys At Beth Israel Deaconess Med Ctr Inc — 1676 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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