Marc Wallace, DO
NPI 1841299146 · Diagnostic Radiology Physician · Johnstown, PA
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marc Wallace, DO is a Diagnostic Radiology Physician provider in Johnstown, PA (NPI 1841299146).
Provider details
- NPI number
- 1841299146
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- Yes
- License
- OS00848L (PA)
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
20 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
154 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) |
|---|---|---|
| X-Ray of Chest, 1 View71045 | 92 | $8 |
| Ct Scan Head Or Brain Without Contrast70450 | 31 | $38 |
| Ct Scan of Abdomen and Pelvis With Contrast74177 | 17 | $82 |
| X-Ray of Chest, 2 Views71046 | 14 | $10 |
Typical Medicare-allowed amounts for these services range $8–$82 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-07-19
- Last updated
- 2025-09-05
- Certified
- 2025-09-05
Frequently asked questions
- What is Marc Wallace's NPI number?
- Marc Wallace's National Provider Identifier (NPI) is 1841299146, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marc Wallace's specialty?
- Marc Wallace is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Marc Wallace located?
- Marc Wallace's practice location on file with NPPES is 138 Platt Dr, Johnstown, PA 15904-4305.
- What is Marc Wallace's phone number?
- The practice phone number listed in the NPPES registry for Marc Wallace is (412) 478-6416.
- Does Marc Wallace accept Medicare?
- Marc Wallace is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marc Wallace's NPI active?
- Yes — Marc Wallace's NPI (1841299146) is active in the NPPES registry as of the last update on 2025-09-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.