Michael G. Hillegass Iii, MD

Medicare activity in 2024

Official CMS public-use data for Michael G. Hillegass Iii, 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.

Most frequent services

1. Injection, methylprednisolone acetate, 1 mg (J1010)1,800 services
2. Injection, dexamethasone sodium phosphate, 1 mg (J1100)355 services
3. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)200 services
4. Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)143 services
5. Injection of anesthetic or steroid into joint between lower spine and hip bone using imaging guidance (27096)27 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%
• Arthritis75%
• Anxiety36%
• Ischemic heart disease29%
• Depression29%

Hospitals where Michael G. Hillegass Iii works

Medicare's Facility Affiliation Data lists Michael G. Hillegass Iii 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 Michael G. Hillegass Iii is enrolled with Medicare (CMS data updated October 2, 2026).

• 171 Ashley AveCharleston, SC 29425 (843) 792‑1414

Group practices

Medicare enrollment lists Michael G. Hillegass Iii 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

• Pain Managementprimary
• Anesthesiologyalso
• Interventional Pain Managementalso

Find other Pain Management doctors in South Carolina →

Other pain management doctors in Charleston

Clinicians with the same Medicare primary specialty in Charleston, SC — not a recommendation.

• Justin G. Wikle, MD
• Derrick W. Randall
• Renee M. Rosati, DO
• Andrew M. Mendelson, DO

All pain management doctors in Charleston →

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.

• Ryan M. Barnes
• Renee D. Straub, MD
• Chuma Obineme, MD
• George R. Richardson Iii, MD
• Justin Harold, MD
• Priya Arumuganathan, MD

Clinician information

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

1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
6. Medicare Care Compare — official Medicare tool to look up clinicians