William Mason, MD
NPI 1083654917 · Diagnostic Radiology Physician · Seneca, PA
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Mason, MD is a Diagnostic Radiology Physician provider in Seneca, PA (NPI 1083654917).
Provider details
- NPI number
- 1083654917
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 01036336A (IN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
862 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) |
|---|---|---|
| Screening 3d Breast Mammography77063 | 215 | $27 |
| Screening Mammography77067 | 215 | $34 |
| Screening 3d Breast Mammography77063 | 115 | $27 |
| Screening Mammography77067 | 115 | $34 |
| Diagnostic Digital Breast Tomosynthesis, Unilateral Or Bilateral (list Separately in Addition to 77065 Or 77066)G0279 | 78 | $27 |
| Limited Ultrasound Scan of 1 Breast76642 | 45 | $33 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-08
- Last updated
- 2025-08-19
- Certified
- 2025-08-19
Frequently asked questions
- What is William Mason's NPI number?
- William Mason's National Provider Identifier (NPI) is 1083654917, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Mason's specialty?
- William Mason is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is William Mason located?
- William Mason's practice location on file with NPPES is 100 Fairfield Dr, Seneca, PA 16346-2130.
- What is William Mason's phone number?
- The practice phone number listed in the NPPES registry for William Mason is (814) 676-7130.
- Does William Mason accept Medicare?
- William Mason is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Mason's NPI active?
- Yes — William Mason's NPI (1083654917) is active in the NPPES registry as of the last update on 2025-08-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.