Matthew Walker, MD
NPI 1992900419 · Emergency Medicine Physician · London, OH
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Matthew Walker, MD is a Emergency Medicine Physician provider in London, OH (NPI 1992900419).
Provider details
- NPI number
- 1992900419
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 4301084424 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Sertraline Hcl | 26 |
| Lithium Carbonatebrand: Lithium Carbonate Er | 26 |
| Propranolol Hcl | 26 |
| Risperidone | 25 |
| Topiramate | 24 |
| Levothyroxine Sodium | 18 |
| Simvastatin | 18 |
| Fenofibrate | 18 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-06-15
- Last updated
- 2013-08-15
Frequently asked questions
- What is Matthew Walker's NPI number?
- Matthew Walker's National Provider Identifier (NPI) is 1992900419, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Walker's specialty?
- Matthew Walker is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Matthew Walker located?
- Matthew Walker's practice location on file with NPPES is 210 N Main St, London, OH 43140-1115.
- What is Matthew Walker's phone number?
- The practice phone number listed in the NPPES registry for Matthew Walker is (513) 284-3019.
- Does Matthew Walker accept Medicare?
- Matthew Walker is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Matthew Walker's NPI active?
- Yes — Matthew Walker's NPI (1992900419) is active in the NPPES registry as of the last update on 2013-08-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.