Jin Yop S. Chang, MD

Medicare activity in 2024

Official CMS public-use data for Jin Yop S. Chang, 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. New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)21 services
2. Insertion of brain neurostimulator pulse device with connection to 2 or more electrode arrays (61886)19 services
3. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)12 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 pressure69%
• High cholesterol66%
• Arthritis52%
• Depression46%
• Anxiety36%
• Ischemic heart disease22%

Hospitals where Jin Yop S. Chang works

Medicare's Facility Affiliation Data lists Jin Yop S. Chang 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 and RideoutMarysville, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050133
• University of California Davis Medical CenterSacramento, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050599

Practice locations

Addresses where Jin Yop S. Chang is enrolled with Medicare (CMS data updated October 2, 2026).

• 2315 Stockton BlvdSacramento, CA 95817
• 3160 Folsom Blvd, Suite 3900Sacramento, CA 95816 (916) 734‑5959
• 4860 Y StSacramento, CA 95817
• 4861 Y StSacramento, CA 95817 (916) 734‑2525
• 4868 X StSacramento, CA 95817

Group practices

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

• Regents of the Univ of Ca1,584 clinicians in the group

Specialties

• Neurosurgeryprimary

Find other Neurosurgery doctors in California →

Other neurosurgeons in Sacramento

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

• Asha M. Iyer, MD
• Kevin E. Hsieh, MD
• Michael Chan, MD
• Huy T. Duong, MD
• Deyaaldeen Abu Reesh, MD
• Richard L. Price Iii, MD
• Larry Bodden, MD
• David J. Moller, MD

All neurosurgeons in Sacramento →

Other clinicians in Regents of the Univ of Ca

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

• Tiffany A. Dong, MD
• David T. Cooke, MD
• Sawyer G. Smith, MD
• Jennifer Atkins, NP
• Peggy A. Wu, MD
• Melissa J. Chen, 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