KELSEY SACK MD/PHD
NPI 1710415344
Internal Medicine - Pulmonary Disease in Boston, MA
About Kelsey Sack Md/phd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KELSEY SACK MD/PHD (NPI 1710415344) is an individual pulmonary disease provider in Boston, Massachusetts, licensed in Massachusetts (272220) and active in the NPI registry since May 2017. She is enrolled in Medicare PECOS, is affiliated with Beth Israel Deaconess Medical Center, and is a graduate of Boston University School Of Medicine (2017).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Kelsey Sack Md/phd is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Areas of Expertise CMS Part B claims
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Beth Israel Deaconess Medical Center
Acute Care Hospitals · Boston, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02215 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BOSTON, MA 02215
BOSTON, MA 02215
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Kelsey Sack's NPI number?
The NPI number for Kelsey Sack is 1710415344. It was assigned to this individual provider in the NPPES registry on May 26, 2017.
Where is Kelsey Sack located?
Kelsey Sack practices at 330 Brookline Ave, Boston, MA 02215. The listed phone number is (617) 667-7000.
What is Kelsey Sack's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.
Is Kelsey Sack enrolled in Medicare?
Yes. Kelsey Sack is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Is Kelsey Sack affiliated with any hospitals?
According to CMS data, Kelsey Sack is affiliated with Beth Israel Deaconess Medical Center.
When was this NPI record last updated?
The NPPES record for Kelsey Sack was last updated on November 13, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
