Andrew Chi-Wei Ng, MD
NPI 1871716910ActiveIndividual· Internal Medicine· Millbrae, CA
Internal Medicine (MD) in Millbrae, California, trained at Medical College of Ohio (class of 2004). Their prescriptions cost Medicare Part D more than their services did: $1,214,217 for 16,128 claims, against $477,232 paid for services in 2024.
Overview
| NPI | 1871716910 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Apr 10, 2007 |
| Last updated in NPPES | Jul 25, 2014 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A107327 | CA |
| Internal Medicine | 207R00000X | 4301088587 | MI |
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 - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 601 |
|---|---|
| Services billed | 6,056 across 5 procedure codes |
| Paid by Medicare | $477,232 |
Part D prescriptions in 2024
| Prescriptions (claims) | 16,128 · 16,183 30-day fills |
|---|---|
| Patients | 518 |
| Total drug cost | $1,214,217 |
| Generic share | 84% of claims |
Education and affiliations
| Medical school | Medical College of Ohio |
|---|---|
| Graduation year | 2004 |
| Medicare specialty | Internal Medicine |
Medical group
- Acn Medical Group IncMillbrae, CA · 2 clinicians
Hospital affiliations
- Adventist Health Mendocino CoastFort Bragg, CA
- Alta Bates Summit Medical CenterOakland, CA
- Sutter Delta Medical CenterAntioch, CA
Other facilities
- Alert Home Health CareHome health agency · Dublin, CA
- Premier Home Health Providers Inc.Home health agency · San Jose, CA
- Amavi Home Health and Hospice Care Services, IncHospice · Brentwood, CA
- Diamond Ridge Healthcare CenterNursing home · Pittsburg, CA
- Excell Health Care CenterNursing home · Oakland, CA
- Marina Garden Nursing CenterNursing home · Alameda, CA
- Redwood Healthcare Center LLCNursing home · Oakland, CA
- Richmond Post Acute CareNursing home · Richmond, CA
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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