Gina S. Kwak, MD

Medicare activity in 2024

Official CMS public-use data for Gina S. Kwak, 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. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)394 services
2. Biopsy of large bowel using a flexible endoscope (45380)84 services
3. Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)84 services
4. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)81 services
5. Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)63 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 pressure69%
• Arthritis55%
• Ischemic heart disease29%
• Osteoporosis29%
• Anxiety28%

Hospitals where Gina S. Kwak works

Medicare's Facility Affiliation Data lists Gina S. Kwak 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.

• North Shore University HospitalManhasset, NY · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 330106

Practice locations

Addresses where Gina S. Kwak is enrolled with Medicare (CMS data updated October 2, 2026).

• 310 E Shore Rd, Suite 206Great Neck, NY 11023 (516) 487‑7677

Group practices

Medicare enrollment lists Gina S. Kwak as a member of this group (CMS data updated October 2, 2026).

• Digestive Healthcare Associates PC16 clinicians in the group

Specialties

• Gastroenterologyprimary

Find other Gastroenterology doctors in New York →

Other gastroenterologists in Great Neck

Clinicians with the same Medicare primary specialty in Great Neck, NY — not a recommendation.

• Anthony Celifarco, MD
• Rifat Mamun, MD
• Howard M. Rattner, MD
• Kaveh Zivari, MD
• Seth Miller
• Jacqueline Forman, MD
• Robert D. Herman, MD
• Edna Khodadadian, MD

All gastroenterologists in Great Neck →

Other clinicians in Digestive Healthcare Associates PC

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

• Anthony Celifarco, MD
• Jacqueline Forman, MD
• Robert D. Herman, 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