LUKE MATTHEW WALKER NP
NPI 1104624402
Nurse Practitioner - Acute Care in Ellicott City, MD
About Luke Matthew Walker Np NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
LUKE MATTHEW WALKER NP (NPI 1104624402) is an individual acute care provider in Ellicott City, Maryland, licensed in Maryland (R234041) and active in the NPI registry since March 2025. He is enrolled in Medicare PECOS, is affiliated with Medstar Harbor Hospital, and is a graduate of Other (2024).
NPPES Registry Identity
Specialties & Licenses
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
Luke Matthew Walker Np 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 Reassignment
Medicare enrollment records show Luke Walker reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Baltimore, MD 21239
- Reassigned Medicare billing, Maryland enrollment
- 2,602 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.
Medstar Harbor Hospital
Acute Care Hospitals · Baltimore, MDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 21042 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
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Luke Walker's NPI number?
The NPI number for Luke Walker is 1104624402. It was assigned to this individual provider in the NPPES registry on March 4, 2025.
Where is Luke Walker located?
Luke Walker practices at 4760 Leyden Way, Ellicott City, MD 21042. The listed phone number is (443) 468-5294.
What is Luke Walker's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Acute Care, with taxonomy code 363LA2100X.
Is Luke Walker enrolled in Medicare?
Yes. Luke 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 organization bills Medicare for Luke Walker's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Luke Walker reassigns Medicare benefits to Medstar Medical Group II LLC (Baltimore, MD). The 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 Luke Walker's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Luke Walker affiliated with any hospitals?
According to CMS data, Luke Walker is affiliated with Medstar Harbor Hospital.
When was this NPI record last updated?
The NPPES record for Luke Walker was last updated on March 4, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.
# Luke Matthew Walker, NP · NPI 1104624402
Acute Care physician in Ellicott City, Maryland. Individual provider, active in the CMS NPPES registry since March 4, 2025.
## Identity
- **NPI:** 1104624402 (Entity type: Individual)
- **Enumerated:** March 4, 2025
- **Primary specialty:** Nurse Practitioner - Acute Care · taxonomy 363LA2100X
- **State license:** R234041 (Maryland)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 4760 LEYDEN WAY, Ellicott City, MD 21042-7708
- **Phone:** (443) 468-5294
## 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:** Medstar Medical Group II LLC (NPI 1184046187, Baltimore, MD), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2024
## Record status
- **NPPES last updated:** March 4, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1104624402) · Data from the CMS NPPES public registry.