Marc B. Sonenshine, MD

Medicare activity in 2024

Official CMS public-use data for Marc B. Sonenshine, 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. Biopsy of large bowel using a flexible endoscope (45380)206 services
2. Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)134 services
3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)118 services
4. Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)115 services
5. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)102 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 cholesterol75%
• High blood pressure66%
• Arthritis50%
• Ischemic heart disease30%
• Anxiety21%
• Diabetes19%

Hospitals where Marc B. Sonenshine works

Medicare's Facility Affiliation Data lists Marc B. Sonenshine 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.

• Northside HospitalAtlanta, GA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 110161
• Northside Hospital CherokeeCanton, GA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 110008

Practice locations

Addresses where Marc B. Sonenshine is enrolled with Medicare (CMS data updated October 2, 2026).

• 4800 Olde Towne Pkwy, Suite 370Marietta, GA 30068 (678) 631‑4620
• 980 Johnson Ferry Rd, Suite 820Atlanta, GA 30342 (404) 252‑9307

Group practices

Medicare enrollment lists Marc B. Sonenshine as a member of these groups (CMS data updated October 2, 2026).

• Aga Professional Services LLC177 clinicians in the group
• Aga, LLC137 clinicians in the group

Specialties

• Gastroenterologyprimary
• Internal Medicinealso

Find other Gastroenterology doctors in Georgia →

Other gastroenterologists in Marietta

Clinicians with the same Medicare primary specialty in Marietta, GA — not a recommendation.

• Ritesh Shah, MD
• Nicole M. Gordon, MD
• Angela K. Crowell, MD
• David Finkelman, MD
• Sanjay R. Parikh, MD
• Umangi H. Patel, MD
• Kelly C. Grow, MD
• Margaret E. Morrison, MD

All gastroenterologists in Marietta →

Other clinicians in Aga Professional Services LLC

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

• Kimberly A. Moriles Yi
• McKenna E. Moe
• Eliana Suenkel
• Paresh P. Kamat
• Alison A. Miller, PA
• Ruth D. Montalvo, 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