Roger Wallace, M.D.
NPI 1083645501 · Emergency Medicine Physician · Valencia, CA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Roger Wallace, M.D. is a Emergency Medicine Physician provider in Valencia, CA (NPI 1083645501).
Provider details
- NPI number
- 1083645501
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A71306 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
698 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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 does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 322 | $176 |
| Electrocardiogram (ecg) 1 to 3 Leads With Review By Physician Only93042 | 179 | $7 |
| Critical Care, First 30-74 Minutes99291 | 96 | $217 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 77 | $122 |
| Limited Ultrasound Scan of Abdomen76705 | 12 | $29 |
| Ultrasound of Heart, Follow-Up93308 | 12 | $26 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 73 | 73 |
| Ondansetronbrand: Ondansetron Odt | 47 | 47 |
| Cephalexin | 28 | 28 |
| Cefdinir | 24 | 24 |
| Prednisone | 21 | 18 |
| Doxycycline Hyclate | 15 | 14 |
| Ibuprofen | 14 | 14 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-05
- Last updated
- 2008-07-07
Frequently asked questions
- What is Roger Wallace's NPI number?
- Roger Wallace's National Provider Identifier (NPI) is 1083645501, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Roger Wallace's specialty?
- Roger Wallace is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Roger Wallace located?
- Roger Wallace's practice location on file with NPPES is 23845 Mcbean Pkwy, Valencia, CA 91355-2001.
- What is Roger Wallace's phone number?
- The practice phone number listed in the NPPES registry for Roger Wallace is (661) 253-8112.
- Does Roger Wallace accept Medicare?
- Roger Wallace is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Roger Wallace's NPI active?
- Yes — Roger Wallace's NPI (1083645501) is active in the NPPES registry as of the last update on 2008-07-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.