William R. Fulton, DO

Medicare activity in 2024

Official CMS public-use data for William R. Fulton, 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 50 minutes (99233)202 services
2. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)143 services
3. Prolonged hospital inpatient or observation care evaluation and management service(s) beyond the total time for the primary service (when the primary service has been selected using time on the date of the primary service); each additional 15 minutes by th (G0316)67 services
4. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)43 services
5. Critical care, first 30-74 minutes (99291)22 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 cholesterol74%
• Diabetes57%
• Chronic kidney disease54%
• Arthritis44%
• Heart failure39%

Hospitals where William R. Fulton works

Medicare's Facility Affiliation Data lists William R. Fulton 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 William R. Fulton is enrolled with Medicare (CMS data updated October 2, 2026).

• 1200 B Gale Wilson BlvdFairfield, CA 94533 (707) 429‑3600
• 1860 Pennsylvania AveFairfield, CA 94533 (707) 646‑4114
• 1860 Pennsylvania Ave, Suite 200Fairfield, CA 94533 (707) 646‑4180

Group practices

Medicare enrollment lists William R. Fulton 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

• General Surgeryprimary

Find other General Surgery doctors in California →

Other general surgeons in Fairfield

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

• Behrouz Jamnani, MD
• John P. Zopfi Iii, DO
• Majid B. Kianmajd, DO
• Alexander Aram, MD
• Haroon M. Mojaddidi, MD
• Amir A. Amiri, MD

All general surgeons in Fairfield →

Other clinicians in NorthBay Physicians Surgery Center, LLC

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

• Teresa G. Whitley, MD
• Gretchen A. Hess
• Hollis R. London, DO
• Marlene H. Freeman, MD
• Lisa Harrison, NP
• Sreenivas Ravuri, 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