Kenneth J Chang, MD
NPI 1518047604ActiveIndividual· Internal Medicine, Gastroenterology· Newport Beach, CA
Internal Medicine, Gastroenterology (MD) in Newport Beach, California, trained at Warren Alpert Medical School of Brown University (class of 1985). Mostly services rather than prescriptions: Medicare paid $34,522 for 79 patients in 2024, with only 18 Part D claims. Wilson Cook Medical Incorporated was the largest of 11 companies reporting payments in 2025, $214,563 in all, mostly consulting fees.
Overview
| NPI | 1518047604 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Oct 16, 2006 |
| Last updated in NPPES | May 7, 2026 |
| Certified by provider | May 7, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 000000G61843 | 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 - Gastroenterology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 79 |
|---|---|
| Services billed | 176 across 37 procedure codes |
| Paid by Medicare | $34,522 |
Part D prescriptions in 2024
| Prescriptions (claims) | 18 · 48 30-day fills |
|---|---|
| Total drug cost | $853.22 |
| Generic share | 94% of claims |
Education and affiliations
| Medical school | Warren Alpert Medical School of Brown University |
|---|---|
| Graduation year | 1985 |
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
Medical group
- Hoag ClinicNewport Beach, CA · 460 clinicians
Hospital affiliation
- Hoag Memorial Hospital PresbyterianNewport Beach, CA
Industry payments (Open Payments)
- 2025$214,563 · 87 payments from 11 companies
- 2024$223,363 · 60 payments from 11 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Wilson Cook Medical Incorporated | $81,925 | 5 |
| Merit Medical Systems Inc | $62,429 | 14 |
| Olympus Corporation of the Americas | $32,315 | 23 |
| Fujifilm Healthcare Americas Corporation | $13,461 | 7 |
| Cook Incorporated | $11,547 | 6 |
What the 2025 payments were for
- Consulting Fee$95,925 · 22 payments
- Royalty or License$77,178 · 2 payments
- Education$20,936 · 11 payments
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$11,800 · 4 payments
- Compensation for serving as faculty or as a speaker for a medical education program$4,500 · 1 payment
- Travel and Lodging$2,122 · 10 payments
- Food and Beverage$2,103 · 37 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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