Suk Charles Whang, MD

Medicare activity in 2024

Official CMS public-use data for Suk Charles Whang, 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)314 services
2. Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito (G0500)160 services
3. Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)154 services
4. Biopsy of large bowel using a flexible endoscope (45380)142 services
5. Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)90 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 pressure74%
• High cholesterol72%
• Arthritis45%
• Diabetes39%
• Chronic kidney disease31%
• Ischemic heart disease26%

Hospitals where Suk Charles Whang works

Medicare's Facility Affiliation Data lists Suk Charles Whang 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.

• NorthBay Medical CenterFairfield, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050367

Practice locations

Addresses where Suk Charles Whang is enrolled with Medicare (CMS data updated October 2, 2026).

• 1200 B Gale Wilson BlvdFairfield, CA 94533 (707) 429‑3600
• 4520 Business Ctr Dr, Suite 200Vacaville, CA 94534 (707) 646‑5500

Group practices

Medicare enrollment lists Suk Charles Whang as a member of these groups (CMS data updated October 2, 2026).

• NorthBay Physicians Surgery Center, LLC324 clinicians in the group
• NorthBay Health Medical Foundation213 clinicians in the group

Specialties

• Gastroenterologyprimary

Find other Gastroenterology doctors in California →

Other gastroenterologists in Fairfield

Clinicians with the same Medicare primary specialty in Fairfield, CA — not a recommendation.

• Sabba Maqbool, MD
• Douglas F. Taylor, DO
• Michael J. Krier, MD

All gastroenterologists in Fairfield →

Other clinicians in NorthBay Physicians Surgery Center, LLC

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

• Mark L. Villalon, MD
• Cynthia L. Pena, MD
• May T. Tun, MD
• Kim R. Bayliss, PA
• Melissa Schoenwetter, DO
• Saba Lahsaei, 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