DR. KATHERINE HAYE WALKER M.D., M.SC.
NPI 1528353463
Internal Medicine - Pulmonary Disease in Boston, MA
About Dr. Katherine Haye Walker M.d., M.sc. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. KATHERINE HAYE WALKER M.D., M.SC. (NPI 1528353463) is an individual pulmonary disease provider in Boston, Massachusetts, licensed in Massachusetts (258701) and active in the NPI registry since June 2011. She is enrolled in Medicare PECOS, is affiliated with Brigham And Women's Hospital, and is a graduate of Harvard Medical School (2011).
NPPES Registry Identity
Specialties & Licenses 3
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
Dr. Katherine Haye Walker M.d., M.sc. 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 Walker 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
- 4,574 clinicians in this Medicare group
Boston, MA 02115
- Reassigned Medicare billing, Massachusetts enrollment
- Also billed through NPI 1851333686 (Massachusetts)
- 531 clinicians in this Medicare group
Cambridge, MA 02138
- Reassigned Medicare billing, Massachusetts enrollment
- 423 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 4
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.
Brigham And Women's Hospital
Acute Care Hospitals · Boston, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02115 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 02115
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 Walker's NPI number?
The NPI number for Katherine Walker is 1528353463. It was assigned to this individual provider in the NPPES registry on June 17, 2011.
Where is Katherine Walker located?
Katherine Walker practices at 75 Francis St, Boston, MA 02115. The listed phone number is (617) 732-5500.
What is Katherine Walker's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.
Is Katherine Walker enrolled in Medicare?
Yes. Katherine Walker 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 Walker's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Katherine Walker reassigns Medicare benefits to 3 organizations: Brigham & Womens Physicians Organization Inc (Boston, MA), Dana-Farber Cancer Institute, Inc. (Boston, MA) and Mount Auburn Professional Services Inc (Cambridge, 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 Walker's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Katherine Walker affiliated with any hospitals?
According to CMS data, Katherine Walker is affiliated with Brigham And Women's Hospital.
When was this NPI record last updated?
The NPPES record for Katherine Walker was last updated on May 16, 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.
# Dr. Katherine Haye Walker, M.D., M.SC. · NPI 1528353463
Pulmonary Disease physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since June 17, 2011.
## Identity
- **NPI:** 1528353463 (Entity type: Individual)
- **Enumerated:** June 17, 2011
- **Primary specialty:** Internal Medicine - Pulmonary Disease · taxonomy 207RP1001X
- **State license:** 258701 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 75 FRANCIS ST, Boston, MA 02115-6110
- **Phone:** (617) 732-5500
## 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): Brigham & Womens Physicians Organization Inc (NPI 1033535497, Boston, MA); Dana-Farber Cancer Institute, Inc. (NPI 1346433257, Boston, MA); Mount Auburn Professional Services Inc (NPI 1992750996, Cambridge, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Harvard Medical School, class of 2011
## Record status
- **NPPES last updated:** May 16, 2017
---
Source: [NPI Profile](https://npiprofile.com/npi/1528353463) · Data from the CMS NPPES public registry.