Charles W. Chia, M.D.
NPI 1841229069ActiveIndividual· Dermatology· Thousand Oaks, CA
Dermatology (M.D.) in Thousand Oaks, California, trained at Warren Alpert Medical School of Brown University (class of 2005). Their prescriptions cost Medicare Part D more than their services did: $1,045,665 for 1,936 claims, against $1,015 paid for services in 2024. Leo Pharma Inc. reported $52.45 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1841229069 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 1, 2006 |
| Last updated in NPPES | Nov 30, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Dermatology Primary | 207N00000X | A108491 | 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 - Dermatology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 11 |
|---|---|
| Services billed | 33 across 10 procedure codes |
| Paid by Medicare | $1,015 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,936 · 2,590 30-day fills |
|---|---|
| Patients | 767 |
| Total drug cost | $1,045,665 |
| Generic share | 85% of claims |
Education and affiliations
| Medical school | Warren Alpert Medical School of Brown University |
|---|---|
| Graduation year | 2005 |
| Medicare specialty | Dermatology |
Medical group
- Southern California Permanente Medical GroupRedlands, CA · 11,293 clinicians
Industry payments (Open Payments)
- 2025$52.45 · 1 payment from 1 company
- 2024$126.17 · 3 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Leo Pharma Inc. | $52.45 | 1 |
What the 2025 payments were for
- Food and Beverage$52.45 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Dermatology providers in Thousand Oaks
- 1841487600
- 1235671389
- 1073524674
- 1356535009
- 1154574242
- 1124216684
- 1144069782
- 1740296698
- 1770796708
- 1104110071
- 1588126148
- 1447541511