Chinh Mai, MD
NPI 1992017636 · Internal Medicine Physician · Westminster, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Chinh Mai, MD is a Internal Medicine Physician provider in Westminster, CA (NPI 1992017636).
Provider details
- NPI number
- 1992017636
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- A126013 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Hospitals
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
15 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
15,822 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 3,224 | $94 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 3,137 | $76 |
| Blood Glucose (sugar) Level82947 | 2,001 | $4 |
| Infusion Into a Vein for Therapy, Prevention, Or Diagnosis, Each Additional Hour96366 | 1,184 | $23 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 819 | $9 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 807 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 269 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 2,326 | 328 |
| Metformin Hcl | 1,768 | 224 |
| Amlodipine Besylate | 1,753 | 242 |
| Calcitriol | 1,627 | 239 |
| Icosapent Ethylbrand: Vascepa | 1,415 | 193 |
| Carvedilol | 1,402 | 195 |
| Losartan Potassium | 1,267 | 182 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,547 across 104 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2010-07-10
- Last updated
- 2022-04-01
- Certified
- 2022-04-01
Frequently asked questions
- What is Chinh Mai's NPI number?
- Chinh Mai's National Provider Identifier (NPI) is 1992017636, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Chinh Mai's specialty?
- Chinh Mai is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Chinh Mai located?
- Chinh Mai's practice location on file with NPPES is 8251 Westminster Blvd Ste 110, Westminster, CA 92683-3370.
- What is Chinh Mai's phone number?
- The practice phone number listed in the NPPES registry for Chinh Mai is (714) 839-5898.
- Does Chinh Mai accept Medicare?
- Chinh Mai is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Chinh Mai's NPI active?
- Yes — Chinh Mai's NPI (1992017636) is active in the NPPES registry as of the last update on 2022-04-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.