Quick answers
- Does Mason J. Walgrave accept Medicare assignment?
- Yes. Medicare's clinician data says Mason J. Walgrave accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Mason J. Walgrave see?
- In 2024, CMS data shows 110 Original Medicare patients and 269 services for Mason J. Walgrave. This counts Original Medicare only and measures volume, not quality.
- What is Mason J. Walgrave's NPI number?
- 1144670662. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Mason J. Walgrave, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 110 |
|---|---|
| Services billed to Medicare | 269 |
| Different services or procedures | 7 |
| Participating Medicare provider | Yes |
| Average age of these patients | 71 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)122 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)56 services
- Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)55 services
- Hospital discharge day management, more than 30 minutes (99239)18 services
- Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)11 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Arthritis60%
- Anxiety53%
- Diabetes51%
- Depression47%
Hospitals where Mason J. Walgrave works
Medicare's Facility Affiliation Data lists Mason J. Walgrave at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- MUSC Medical CenterCharleston, SC · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 420004
Practice locations
Addresses where Mason J. Walgrave is enrolled with Medicare (CMS data updated October 2, 2026).
- 171 Ashley AveCharleston, SC 29425 (843) 792‑1414
Group practices
Medicare enrollment lists Mason J. Walgrave as a member of this group (CMS data updated October 2, 2026).
- University Medical Associates of the Medical University of South Carol1,668 clinicians in the group
Specialties
- Pediatric Medicineprimary
- Internal Medicinealso
Other pediatricians in Charleston
Clinicians with the same Medicare primary specialty in Charleston, SC — not a recommendation.
Other clinicians in University Medical Associates of the Medical University of South Carol
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Medical school | University Of North Texas Hsc, College Of Osteopathic Med |
|---|---|
| Graduation year | 2016 (10 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1144670662 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians