John B. De Graft-Johnson, MD

Medicare activity in 2024

Official CMS public-use data for John B. De Graft-Johnson, 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 low level od decision making, if using time, 20 minutes or more (99213)79 services
2. New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)66 services
3. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)36 services
4. Harvest of vein using an endoscope (33508)16 services
5. Coronary artery bypass using artery graft, 1 graft (33533)16 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 cholesterol75%
• Ischemic heart disease61%
• Diabetes59%
• Chronic kidney disease48%
• Heart failure46%

Hospitals where John B. De Graft-Johnson works

Medicare's Facility Affiliation Data lists John B. De Graft-Johnson 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.

• Adventist Health SonoraSonora, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: not listed by Medicare · CCN 050335
• Doctors Medical CenterModesto, CA · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 050464

Practice locations

Addresses where John B. De Graft-Johnson is enrolled with Medicare (CMS data updated October 2, 2026).

• 1541 Florida Ave, Suite 304Modesto, CA 95350 (209) 577‑3388
• 1801 Colorado Ave, Suite 250Turlock, CA 95382 (209) 647‑3950

Group practices

Medicare enrollment lists John B. De Graft-Johnson as a member of this group (CMS data updated October 2, 2026).

• First Choice Physician Partners127 clinicians in the group

Specialties

• General Surgeryprimary
• Thoracic Surgeryalso
• Vascular Surgeryalso

Find other General Surgery doctors in California →

Other general surgeons in Modesto

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

• Kenichi T. Miyata, MD
• Shiva Niakan, DO
• Bradley S. Putty, MD
• Sean K. Degmetich, MD
• Timothy A. Davis, MD
• Rohini D. Bogineni, MD
• Andrew T. Huber, MD
• Michael Rossini Jr., MD

All general surgeons in Modesto →

Other clinicians in First Choice Physician Partners

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

• David L. Gu, MD
• Patricia Sotolong, DO
• Philip A. Gaudreau Iii, MD
• Siddhartha Chatterjee, DO
• Nicole Dominique Roderos, PA
• Kristina Tabila-Guglielmi, 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