HELEN ELIZABETH WALKER M.D.
NPI 1366533903
Internal Medicine in Catonsville, MD
About Helen Elizabeth Walker M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
HELEN ELIZABETH WALKER M.D. (NPI 1366533903) is an individual internal medicine provider in Catonsville, Maryland, licensed in Maryland (D0035105) and active in the NPI registry since September 2006. She is enrolled in Medicare PECOS.
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 (PECOS)
Helen Elizabeth Walker M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Helen Walker reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Baltimore, MD 21228
- Reassigned Medicare billing, Maryland enrollment
- 317 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 21228 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 4
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
CATONSVILLE, MD 21228
CATONSVILLE, MD 21228
CATONSVILLE, MD 21228
CATONSVILLE, MD 21228
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 Helen Walker's NPI number?
The NPI number for Helen Walker is 1366533903. It was assigned to this individual provider in the NPPES registry on September 27, 2006.
Where is Helen Walker located?
Helen Walker practices at 4 West Rolling Crossroads Suite 100, Catonsville, MD 21228. The listed phone number is (410) 869-0100.
What is Helen Walker's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Helen Walker enrolled in Medicare?
Yes. Helen Walker is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Helen Walker's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Helen Walker reassigns Medicare benefits to Lifebridge Community Physicians, Inc (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 Helen Walker's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Helen Walker was last updated on June 15, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.
# Helen Elizabeth Walker, M.D. · NPI 1366533903
Internal Medicine physician in Catonsville, Maryland. Individual provider, active in the CMS NPPES registry since September 27, 2006.
## Identity
- **NPI:** 1366533903 (Entity type: Individual)
- **Enumerated:** September 27, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** D0035105 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 4 WEST ROLLING CROSSROADS, SUITE 100, Catonsville, MD 21228-5638
- **Phone:** (410) 869-0100
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Lifebridge Community Physicians, Inc (NPI 1295170074, Baltimore, MD), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** June 15, 2015
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Source: [NPI Profile](https://npiprofile.com/npi/1366533903) · Data from the CMS NPPES public registry.