Ken Chiu, MD
NPI 1639126691ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Duarte, CA
Internal Medicine, Endocrinology, Diabetes & Metabolism (MD) with Amg A Professional Medical Corporation, practicing in Duarte, California. Their prescriptions cost Medicare Part D more than their services did: $888,805 for 1,950 claims, against $21,884 paid for services in 2024. Novo Nordisk Inc was the largest of 4 companies reporting payments in 2025, $222.79 in all, mostly food and beverage. Lists Lac/Harbor-Ucla Med Center as a hospital affiliation.
Overview
| NPI | 1639126691 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 27, 2006 |
| Last updated in NPPES | Nov 25, 2020 |
| Certified by provider | Nov 25, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | A45428 | CA |
| Internal Medicine | 207R00000X | A45428 | 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 - Endocrinology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 91 |
|---|---|
| Services billed | 204 across 7 procedure codes |
| Paid by Medicare | $21,884 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,950 · 4,337 30-day fills |
|---|---|
| Patients | 250 |
| Total drug cost | $888,805 |
| Generic share | 52% of claims |
Education and affiliations
| Graduation year | 1983 |
|---|---|
| Medicare specialty | Endocrinology |
Medical group
- Amg A Professional Medical CorporationAlhambra, CA · 20 clinicians
Hospital affiliation
- Lac/Harbor-Ucla Med CenterTorrance, CA
Industry payments (Open Payments)
- 2025$222.79 · 11 payments from 4 companies
- 2024$609.80 · 21 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $156.94 | 8 |
| Amgen Inc. | $25.68 | 1 |
| Medtronic, Inc. | $22.07 | 1 |
| Xeris Pharmaceuticals, Inc. | $18.10 | 1 |
What the 2025 payments were for
- Food and Beverage$222.79 · 11 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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