KELSEY E O'LEARY MD
NPI 1114585114
Hospitalist in Boston, MA
About Kelsey E O'leary Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KELSEY E O'LEARY MD (NPI 1114585114) is an individual hospitalist provider in Boston, Massachusetts, licensed in Massachusetts (291033) and active in the NPI registry since June 2019. She is enrolled in Medicare PECOS, is affiliated with Beth Israel Deaconess Medical Center, and is a graduate of University Of Virginia School Of Medicine (2019).
NPPES Registry Identity
Specialties & Licenses 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Kelsey E O'leary Md 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.
Medicare Billing Reassignments
2Medicare enrollment records show Kelsey O'leary reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Boston, MA 02215
- Reassigned Medicare billing, Massachusetts enrollment
- Also billed through NPI 1497151773 (Massachusetts)
- 1,006 clinicians in this Medicare group
Boston, MA 02215
- Reassigned Medicare billing, Massachusetts enrollment
- 2,579 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 3
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.
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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
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 O'leary's NPI number?
The NPI number for Kelsey O'leary is 1114585114. It was assigned to this individual provider in the NPPES registry on June 4, 2019.
Where is Kelsey O'leary located?
Kelsey O'leary practices at 330 Brookline Ave, Boston, MA 02215. The listed phone number is (617) 667-7000.
What is Kelsey O'leary's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is Kelsey O'leary enrolled in Medicare?
Yes. Kelsey O'leary 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.
Which organizations bill Medicare for Kelsey O'leary's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Kelsey O'leary reassigns Medicare benefits to 2 organizations: Associated Physicians Of Harvard Medical Faculty Physicians At Beth Is (Boston, MA) and Harvard Medical Faculty Phys At Beth Israel Deaconess Med Ctr Inc (Boston, MA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Kelsey O'leary's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Kelsey O'leary affiliated with any hospitals?
According to CMS data, Kelsey O'leary is affiliated with Beth Israel Deaconess Medical Center.
When was this NPI record last updated?
The NPPES record for Kelsey O'leary was last updated on June 16, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years 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.
# Kelsey E O'leary, MD · NPI 1114585114
Hospitalist physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since June 4, 2019.
## Identity
- **NPI:** 1114585114 (Entity type: Individual)
- **Enumerated:** June 4, 2019
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** 291033 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 330 BROOKLINE AVE, Boston, MA 02215-5491
- **Phone:** (617) 667-7000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Associated Physicians Of Harvard Medical Faculty Physicians At Beth Is (NPI 1861216038, Boston, MA); Harvard Medical Faculty Phys At Beth Israel Deaconess Med Ctr Inc (NPI 1194765438, Boston, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Virginia School Of Medicine, class of 2019
## Record status
- **NPPES last updated:** June 16, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1114585114) · Data from the CMS NPPES public registry.