Hellen Chiao, MD
NPI 1154681435ActiveIndividual· Internal Medicine, Gastroenterology· Oceanside, CA
Internal Medicine, Gastroenterology (MD) in Oceanside, California, trained at Medical College of Wisconsin (class of 2012). Their prescriptions cost Medicare Part D more than their services did: $185,797 for 600 claims, against $59,756 paid for services in 2024. Abbvie Inc. was the largest of 15 companies reporting payments in 2025, $2,306 in all, mostly food and beverage.
Overview
| NPI | 1154681435 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 21, 2012 |
| Last updated in NPPES | Feb 25, 2021 |
| Certified by provider | Feb 25, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | A127722 | 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 | 255 |
|---|---|
| Services billed | 571 across 21 procedure codes |
| Paid by Medicare | $59,756 |
Part D prescriptions in 2024
| Prescriptions (claims) | 600 · 997 30-day fills |
|---|---|
| Patients | 342 |
| Total drug cost | $185,797 |
| Generic share | 85% of claims |
Education and affiliations
| Medical school | Medical College of Wisconsin |
|---|---|
| Graduation year | 2012 |
| Medicare specialty | Gastroenterology |
| Telehealth | Offers telehealth |
Medical group
- North County Gastroenterology Medical Group IncOceanside, CA · 11 clinicians
Hospital affiliation
- Tri-City Medical CenterOceanside, CA
Industry payments (Open Payments)
- 2025$2,306 · 110 payments from 15 companies
- 2024$2,360 · 99 payments from 15 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $548.42 | 30 |
| Janssen Biotech, Inc. | $533.52 | 21 |
| Celltrion USA Inc. | $238.11 | 11 |
| Takeda Pharmaceuticals U.S.A., Inc. | $207.64 | 11 |
| Madrigal Pharmaceuticals | $192.62 | 11 |
What the 2025 payments were for
- Food and Beverage$2,306 · 110 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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