Steve Sung-Yul Chang, MD
NPI 1639376064ActiveIndividual· Surgery· Monterey, CA
Surgery (MD) in Monterey, California, trained at Northeastern Ohio University College of Medicine (class of 2007). 328 Medicare patients in 2024, $151,081 paid; nearly all of their 239 Part D prescriptions were generic (98%). Intuitive Surgical, Inc. was the largest of 2 companies reporting payments in 2025, $649.11 in all, mostly travel and lodging.
Overview
| NPI | 1639376064 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 29, 2007 |
| Last updated in NPPES | Oct 18, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Surgery Primary | 208600000X | A109993 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - General Surgery (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 328 |
|---|---|
| Services billed | 771 across 90 procedure codes |
| Paid by Medicare | $151,081 |
Part D prescriptions in 2024
| Prescriptions (claims) | 239 · 266 30-day fills |
|---|---|
| Patients | 98 |
| Total drug cost | $4,603 |
| Generic share | 98% of claims |
Education and affiliations
| Medical school | Northeastern Ohio University College of Medicine |
|---|---|
| Graduation year | 2007 |
| Medicare specialty | General Surgery |
| Telehealth | Offers telehealth |
Medical group
- Montage Medical GroupMonterey, CA · 127 clinicians
Hospital affiliation
- Community Hospital of the Monterey PeninsulaMonterey, CA
Industry payments (Open Payments)
- 2025$649.11 · 5 payments from 2 companies
- 2024$3,623 · 8 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Intuitive Surgical, Inc. | $596.59 | 3 |
| Novo Nordisk Inc | $52.52 | 2 |
What the 2025 payments were for
- Travel and Lodging$477.15 · 2 payments
- Food and Beverage$171.96 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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