Quick answers
- Does Chinh V. Mai accept Medicare assignment?
- Yes. Medicare's clinician data says Chinh V. Mai accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Chinh V. Mai see?
- In 2024, CMS data shows 467 Original Medicare patients and 17,371 services for Chinh V. Mai. This counts Original Medicare only and measures volume, not quality.
- What is Chinh V. Mai's NPI number?
- 1992017636. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Chinh V. Mai, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 467 |
|---|---|
| Services billed to Medicare | 17,371 |
| Different services or procedures | 67 |
| Participating Medicare provider | Yes |
| Average age of these patients | 79 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)3,224 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)3,137 services
- Blood glucose (sugar) level (82947)2,001 services
- Infusion into a vein for therapy, prevention, or diagnosis, each additional hour (96366)1,184 services
- Insertion of needle into vein for collection of blood sample (36415)819 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Osteoporosis69%
- Diabetes67%
- Arthritis59%
- Chronic kidney disease53%
Practice locations
Addresses where Chinh V. Mai is enrolled with Medicare (CMS data updated October 2, 2026).
- 8251 Westminster Blvd, Suite 110Westminster, CA 92683 (714) 465‑2222
Group practices
Medicare enrollment lists Chinh V. Mai as a member of this group (CMS data updated October 2, 2026).
- VM Medical Group4 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Westminster
Clinicians with the same Medicare primary specialty in Westminster, CA — not a recommendation.
Other clinicians in VM Medical Group
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University College Of Medicine |
| Graduation year | 2000 (26 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1992017636 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians