DR. PATRICK FRANKLIN WALKER M.D.
NPI 1124448162
Surgery in Bethesda, MD
About Dr. Patrick Franklin Walker M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. PATRICK FRANKLIN WALKER M.D. (NPI 1124448162) is an individual surgery provider in Bethesda, Maryland, licensed in Maryland (D91256) and active in the NPI registry since April 2014. He is enrolled in Medicare PECOS, is affiliated with Meritus Medical Center, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 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
Dr. Patrick Franklin Walker M.d. 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
6Medicare enrollment records show Patrick Walker reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Laurel, MD 20707
- Reassigned Medicare billing, District of Columbia enrollment
- 328 clinicians in this Medicare group
Baltimore, MD 21201
- Reassigned Medicare billing, Maryland enrollment
- Medicare enrollment name: Shock Trauma Associates PA
- 541 clinicians in this Medicare group
Fredericksburg, VA 22401
- Reassigned Medicare billing, Virginia enrollment
- 547 clinicians in this Medicare group
Fredericksburg, VA 22401
- Reassigned Medicare billing, Virginia enrollment
- 323 clinicians in this Medicare group
Hagerstown, MD 21742
- Reassigned Medicare billing, Maryland enrollment
- 311 clinicians in this Medicare group
Hagerstown, MD 21742
- Reassigned Medicare billing, Maryland enrollment
- 242 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 2
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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Meritus Medical Center
Acute Care Hospitals · Hagerstown, MDUniversity Of Maryland Medical Center
Acute Care Hospitals · Baltimore, MDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 20889 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.
BETHESDA, MD 20889
BETHESDA, MD 20889
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 Patrick Walker's NPI number?
The NPI number for Patrick Walker is 1124448162. It was assigned to this individual provider in the NPPES registry on April 17, 2014.
Where is Patrick Walker located?
Patrick Walker practices at 8901 Rockville Pike, Bethesda, MD 20889. The listed phone number is (301) 295-4440.
What is Patrick Walker's specialty?
The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.
Is Patrick Walker enrolled in Medicare?
Yes. Patrick 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 Patrick Walker's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Patrick Walker reassigns Medicare benefits to 6 organizations: Dimensions Healthcare Associates Inc (Laurel, MD), Shock Trauma Associates, P.A. (Baltimore, MD), Mary Washington Healthcare Physicians (Fredericksburg, VA), Mary Washington Healthcare Providers LLC (Fredericksburg, VA), Meritus Medical Center Inc (Hagerstown, MD) and 1 more organization, listed in the Medicare section above. 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 Patrick Walker's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Patrick Walker affiliated with any hospitals?
According to CMS data, Patrick Walker is affiliated with Meritus Medical Center and University Of Maryland Medical Center.
When was this NPI record last updated?
The NPPES record for Patrick Walker was last updated on September 9, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.
# Dr. Patrick Franklin Walker, M.D. · NPI 1124448162
Surgery physician in Bethesda, Maryland. Individual provider, active in the CMS NPPES registry since April 17, 2014.
## Identity
- **NPI:** 1124448162 (Entity type: Individual)
- **Enumerated:** April 17, 2014
- **Primary specialty:** Surgery · taxonomy 208600000X
- **State license:** D91256 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 8901 ROCKVILLE PIKE, Bethesda, MD 20889-0001
- **Phone:** (301) 295-4440
## 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:** 6 organizations under Medicare reassignment (form CMS-855R): Dimensions Healthcare Associates Inc (NPI 1407916646, Laurel, MD); Shock Trauma Associates, P.A. (NPI 1679512909, Baltimore, MD); Mary Washington Healthcare Physicians (NPI 1295999852, Fredericksburg, VA); Mary Washington Healthcare Providers LLC (NPI 1750826277, Fredericksburg, VA); Meritus Medical Center Inc (NPI 1255199246, Hagerstown, MD); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Emory University School Of Medicine, class of 2014
## Record status
- **NPPES last updated:** September 9, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1124448162) · Data from the CMS NPPES public registry.