Quick answers
- Does Craig A. Mackaness accept Medicare assignment?
- Yes. Medicare's clinician data says Craig A. Mackaness 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 Craig A. Mackaness see?
- In 2024, CMS data shows 351 Original Medicare patients and 1,113 services for Craig A. Mackaness. This counts Original Medicare only and measures volume, not quality.
- What is Craig A. Mackaness's NPI number?
- 1871720375. 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 Craig A. Mackaness, 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 | 351 |
|---|---|
| Services billed to Medicare | 1,113 |
| Different services or procedures | 12 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)657 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)215 services
- Hospital discharge day management, more than 30 minutes (99239)143 services
- Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)64 services
- Critical care, first 30-74 minutes (99291)14 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%
- Chronic kidney disease58%
- Diabetes55%
- Arthritis55%
- Heart failure52%
Hospitals where Craig A. Mackaness works
Medicare's Facility Affiliation Data lists Craig A. Mackaness 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.
- Bon Secours-St Francis Xavier HospitalCharleston, SC · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 420065
- Mount Pleasant HospitalMount Pleasant, SC · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 420104
- MUSC Medical CenterCharleston, SC · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 420004
- Roper HospitalCharleston, SC · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 420087
- Roper St Francis Hospital-Berkeley IncSummerville, SC · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 420110
Practice locations
Addresses where Craig A. Mackaness is enrolled with Medicare (CMS data updated October 2, 2026).
- 316 Calhoun StCharleston, SC 29401 (843) 724‑2901
Group practices
Medicare enrollment lists Craig A. Mackaness as a member of this group (CMS data updated October 2, 2026).
- 24 on Physicians of SC LLC141 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Charleston
Clinicians with the same Medicare primary specialty in Charleston, SC — not a recommendation.
Other clinicians in 24 on Physicians of SC LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Philadelphia College Of Osteopathic Medicine |
| Graduation year | 2009 (17 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1871720375 |
| 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