Trung Dao, M.D.
NPI 1821104423 · Specialist · Westminster, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Trung Dao, M.D. is a Specialist provider in Westminster, CA (NPI 1821104423).
Provider details
- NPI number
- 1821104423
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A42590 (CA)
Specialties & taxonomies
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 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
237 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) |
|---|---|---|
| Therapy Procedure Using Manual Technique, Each 15 Minutes97140 | 128 | $25 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 59 | $99 |
| Electrical Stimulation (unattended), to One Or More Areas for Indication(s) Other Than Wound Care, As Part of a Therapy Plan of CareG0283 | 50 | $9 |
Typical Medicare-allowed amounts for these services range $9–$99 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 32 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 143 | 40 |
| Amlodipine Besylate | 109 | 30 |
| Omeprazole | 52 | 12 |
| Losartan Potassium | 46 | 14 |
| Fluticasone Propionate | 40 | — |
| Gabapentin | 38 | 15 |
| Metformin Hcl | 37 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$125 across 1 record (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
- 2006-08-23
- Last updated
- 2025-11-19
- Certified
- 2025-11-19
Frequently asked questions
- What is Trung Dao's NPI number?
- Trung Dao's National Provider Identifier (NPI) is 1821104423, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Trung Dao's specialty?
- Trung Dao is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is Trung Dao located?
- Trung Dao's practice location on file with NPPES is 9211 Bolsa Ave, Westminster, CA 92683-5567.
- What is Trung Dao's phone number?
- The practice phone number listed in the NPPES registry for Trung Dao is (714) 898-7886.
- Does Trung Dao accept Medicare?
- Trung Dao is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Trung Dao's NPI active?
- Yes — Trung Dao's NPI (1821104423) is active in the NPPES registry as of the last update on 2025-11-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.