Chinh Mai, MD
NPI 1992017636ActiveIndividual· Internal Medicine· Westminster, CA
Internal Medicine (MD) in Westminster, California, trained at University College of Medicine (class of 2000). Their prescriptions cost Medicare Part D more than their services did: $6,617,528 for 42,998 claims, against $633,685 paid for services in 2024. Amgen Inc. was the largest of 27 companies reporting payments in 2025, $3,803 in all, mostly food and beverage.
Overview
| NPI | 1992017636 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Jul 10, 2010 |
| Last updated in NPPES | Apr 1, 2022 |
| Certified by provider | Apr 1, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A126013 | CA |
| Hospitalist | 208M00000X | A126013 | CA |
| General Acute Care Hospital | 282N00000X | 07051659 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 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 | 467 |
|---|---|
| Services billed | 17,371 across 67 procedure codes |
| Paid by Medicare | $633,685 |
Part D prescriptions in 2024
| Prescriptions (claims) | 42,998 · 49,391 30-day fills |
|---|---|
| Patients | 635 |
| Total drug cost | $6,617,528 |
| Generic share | 71% of claims |
Education and affiliations
| Medical school | University College of Medicine |
|---|---|
| Graduation year | 2000 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Vm Medical GroupWestminster, CA · 4 clinicians
Other facilities
- Acacia Hh&p of Southern California, LLCHome health agency · Irvine, CA
- Advantage Health SystemsHome health agency · Costa Mesa, CA
- Committed Home Health Care, IncHome health agency · Sherman Oaks, CA
- Direct Care Home Health Services, Inc.Home health agency · Van Nuys, CA
- Vista Home Health Care, IncHome health agency · Sun Valley, CA
Industry payments (Open Payments)
- 2025$3,803 · 156 payments from 27 companies
- 2024$2,547 · 107 payments from 22 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $446.15 | 13 |
| Ardelyx, Inc. | $413.23 | 14 |
| Astrazeneca Pharmaceuticals LP | $400.19 | 22 |
| Abbvie Inc. | $359.84 | 17 |
| Novartis Pharmaceuticals Corporation | $337.30 | 18 |
What the 2025 payments were for
- Food and Beverage$3,760 · 155 payments
- Education$42.50 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 74 internal medicine physicians in Westminster · All internal medicine physicians in California