KATHERINE LEIGH ZALESKI MD
NPI 1679715163
Anesthesiology in Boston, MA
About Katherine Leigh Zaleski Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KATHERINE LEIGH ZALESKI MD (NPI 1679715163) is an individual anesthesiology provider in Boston, Massachusetts, licensed in Massachusetts (246892) and active in the NPI registry since March 2009. She is enrolled in Medicare PECOS, is affiliated with Boston Children's Hospital, and is a graduate of Tufts University School Of Medicine (2009).
NPPES Registry Identity
Specialties & Licenses 2
Accepted Insurance
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
Katherine Leigh Zaleski 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
3Medicare enrollment records show Katherine Zaleski reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Boston, MA 02115
- Reassigned Medicare billing, Massachusetts enrollment
- 256 clinicians in this Medicare group
Boston, MA 02215
- Reassigned Medicare billing, Massachusetts enrollment
- 1,477 clinicians in this Medicare group
Boston, MA 02215
- Reassigned Medicare billing, Massachusetts enrollment
- 332 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Boston Children's Hospital
Childrens · Boston, MAOther 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 02115
BOSTON, MA 02115
BOSTON, MA 02115
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 Katherine Zaleski's NPI number?
The NPI number for Katherine Zaleski is 1679715163. It was assigned to this individual provider in the NPPES registry on March 30, 2009.
Where is Katherine Zaleski located?
Katherine Zaleski practices at 300 Longwood Ave Bch - Dept. Of Anesthesiology, Boston, MA 02115. The listed phone number is (617) 355-7737.
What is Katherine Zaleski's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Katherine Zaleski enrolled in Medicare?
Yes. Katherine Zaleski 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 Katherine Zaleski's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Katherine Zaleski reassigns Medicare benefits to 3 organizations: Chmc Anesthesia Foundation Inc (Boston, MA), Beth Israel Deaconess Medical Center, Inc. (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 Katherine Zaleski's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Katherine Zaleski accept?
Health plans from Taro Health list Katherine Zaleski as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Katherine Zaleski affiliated with any hospitals?
According to CMS data, Katherine Zaleski is affiliated with Boston Children's Hospital.
When was this NPI record last updated?
The NPPES record for Katherine Zaleski was last updated on April 26, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.
# Katherine Leigh Zaleski, MD · NPI 1679715163
Anesthesiology physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since March 30, 2009.
## Identity
- **NPI:** 1679715163 (Entity type: Individual)
- **Enumerated:** March 30, 2009
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 246892 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 300 LONGWOOD AVE, BCH - DEPT. OF ANESTHESIOLOGY, Boston, MA 02115-5724
- **Phone:** (617) 355-7737
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Chmc Anesthesia Foundation Inc (NPI 1831268754, Boston, MA); Beth Israel Deaconess Medical Center, Inc. (NPI 1548202641, Boston, MA); Harvard Medical Faculty Phys At Beth Israel Deaconess Med Ctr Inc (NPI 1093756629, Boston, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Tufts University School Of Medicine, class of 2009
## Record status
- **NPPES last updated:** April 26, 2017
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Source: [NPI Profile](https://npiprofile.com/npi/1679715163) · Data from the CMS NPPES public registry.