Chiwai E. Chan, D.O.
NPI 1629051529ActiveIndividual· Pain Medicine, Interventional Pain Medicine· Fountain Valley, CA
Pain Medicine, Interventional Pain Medicine (D.O.) in Fountain Valley, California, trained at College of Osteo Med of the Pacific at Pomona (class of 2000). 651 Medicare patients in 2024, $1,031,549 paid; nearly all of their 716 Part D prescriptions were generic (94%). Abbvie Inc. reported $27.46 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1629051529 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | Yes |
| NPI issued | Nov 23, 2005 |
| Last updated in NPPES | Dec 18, 2020 |
| Certified by provider | Dec 18, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Pain Medicine, Interventional Pain Medicine Primary | 208VP0014X | 20A8068 | CA |
| Pain Medicine, Pain Medicine | 208VP0000X | 4242 | AZ |
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 - Interventional Pain Management (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 651 |
|---|---|
| Services billed | 178,071 across 54 procedure codes |
| Paid by Medicare | $1,031,549 |
Part D prescriptions in 2024
| Prescriptions (claims) | 716 · 742 30-day fills |
|---|---|
| Patients | 262 |
| Total drug cost | $19,205 |
| Generic share | 94% of claims |
Education and affiliations
| Medical school | College of Osteo Med of the Pacific at Pomona |
|---|---|
| Graduation year | 2000 |
| Medicare specialty | Interventional Pain Management |
| Telehealth | Offers telehealth |
Hospital affiliations
- Memorialcare Orange Coast Medical CenterFountain Valley, CA
- Uci Health-OrangeOrange, CA
Industry payments (Open Payments)
- 2025$27.46 · 1 payment from 1 company
- 2024$111.79 · 6 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $27.46 | 1 |
What the 2025 payments were for
- Food and Beverage$27.46 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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