William A. Anderson Iii, MD

Medicare activity in 2024

Official CMS public-use data for William A. Anderson 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. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)33 services
2. Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes (99221)20 services
3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)19 services
4. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)19 services
5. Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43235)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 cholesterol72%
• Diabetes53%
• Arthritis44%
• Depression38%
• Anxiety37%

Hospitals where William A. Anderson Iii works

Medicare's Facility Affiliation Data lists William A. Anderson 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.

• Fmol Health | Our Lady of the LakeBaton Rouge, LA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 190064

Practice locations

Addresses where William A. Anderson Iii is enrolled with Medicare (CMS data updated October 2, 2026).

• 2390 W Congress StLafayette, LA 70506 (337) 261‑6000
• 5000 Hennessy BlvdBaton Rouge, LA 70808 (225) 765‑6565

Group practices

Medicare enrollment lists William A. Anderson Iii as a member of this group (CMS data updated October 2, 2026).

• Lsuhn Billing LLC206 clinicians in the group

Specialties

• Gastroenterologyprimary
• Internal Medicinealso

Find other Gastroenterology doctors in Louisiana →

Other gastroenterologists in Lafayette

Clinicians with the same Medicare primary specialty in Lafayette, LA — not a recommendation.

• John B. Rhodes Jr., MD
• Jacob L. Breaux, MD
• Maneesh Gupta, MD
• Ronald Leo, MD
• Douglas C. Walsh, MD
• Christopher P. Herrington, MD
• Robert M. Be, MD
• Benton M. Oubre, MD

All gastroenterologists in Lafayette →

Other clinicians in Lsuhn Billing LLC

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

• Melisa Harrington, MD
• Matthew C. Foy, MD
• Thomas Heigle, MD
• Kendall G. Holden, MD
• Lan T. Nguyen, MD
• Linda K. Oge, 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