MATTHEW ANTHONY WALKER MD
NPI 1992900419
Emergency Medicine in London, OH
About Matthew Anthony Walker Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MATTHEW ANTHONY WALKER MD (NPI 1992900419) is an individual emergency medicine provider in London, Ohio, licensed in Michigan (4301084424) and active in the NPI registry since June 2007. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Matthew Anthony Walker Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
4Medicare enrollment records show Matthew Walker reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Montgomery, OH 45242
- Reassigned Medicare billing, Ohio enrollment
- 119 clinicians in this Medicare group
Austintown, OH 44515
- Reassigned Medicare billing, Ohio enrollment
- 146 clinicians in this Medicare group
Youngstown, OH 44512
- Reassigned Medicare billing, Ohio enrollment
- 146 clinicians in this Medicare group
Youngstown, OH 44504
- Reassigned Medicare billing, Ohio enrollment
- 129 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 43140 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.
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 Matthew Walker's NPI number?
The NPI number for Matthew Walker is 1992900419. It was assigned to this individual provider in the NPPES registry on June 15, 2007.
Where is Matthew Walker located?
Matthew Walker practices at 210 N Main St, London, OH 43140. The listed phone number is (513) 284-3019.
What is Matthew Walker's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Matthew Walker enrolled in Medicare?
Yes. Matthew Walker is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Matthew Walker's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Matthew Walker reassigns Medicare benefits to 4 organizations: Qualified Emergency Specialists Inc (Montgomery, OH), Mves Austintown LLC (Austintown, OH), Mves Boardman LLC (Youngstown, OH) and Mahoning Valley Emergency Specialists LLC (Youngstown, OH). 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 Matthew Walker's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Matthew Walker accept?
Health plans from CareSource list Matthew Walker 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.
When was this NPI record last updated?
The NPPES record for Matthew Walker was last updated on August 15, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.
# Matthew Anthony Walker, MD · NPI 1992900419
Emergency Medicine physician in London, Ohio. Individual provider, active in the CMS NPPES registry since June 15, 2007.
## Identity
- **NPI:** 1992900419 (Entity type: Individual)
- **Enumerated:** June 15, 2007
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 4301084424 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 210 N MAIN ST, London, OH 43140-1115
- **Phone:** (513) 284-3019
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Qualified Emergency Specialists Inc (NPI 1700872728, Montgomery, OH); Mves Austintown LLC (NPI 1972555944, Austintown, OH); Mves Boardman LLC (NPI 1205888237, Youngstown, OH); Mahoning Valley Emergency Specialists LLC (NPI 1003869652, Youngstown, OH) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 15, 2013
- **Other identifiers:** Medicare PIN 4221324 (OH)
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Source: [NPI Profile](https://npiprofile.com/npi/1992900419) · Data from the CMS NPPES public registry.