Thu Thuy Huynh, M.D.
NPI 1740343367 · Internal Medicine Physician · Westminster, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thu Thuy Huynh, M.D. is a Internal Medicine Physician provider in Westminster, CA (NPI 1740343367).
Provider details
- NPI number
- 1740343367
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- A93982 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
22,350 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) |
|---|---|---|
| Test for Allergy Using Allergenic Extract95004 | 11,376 | $4 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 2,237 | $138 |
| Collection and Interpretation of Physical Parameters Stored in Computers And/Or Transmitted By the Patient And/Or Caregiver to Qualified Health Care Professional, Requiring 30 Minutes Or More, Per 30 Days99091 | 1,253 | $56 |
| Management Using the Results of Remote Vital Sign Monitoring Per Calendar Month, First 20 Minutes99457 | 1,229 | $54 |
| Remote Monitoring of Physiologic Parameters, Initial Supply of Devices With Daily Recordings Or Programmed Alerts Transmission, Each 30 Days99454 | 947 | $55 |
| Management Using the Results of Remote Vital Sign Monitoring Per Calendar Month, Each Additional 20 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 216 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 1,616 | 392 |
| Amlodipine Besylate | 1,453 | 352 |
| Losartan Potassium | 1,192 | 274 |
| Gabapentin | 930 | 208 |
| Metformin Hcl | 563 | 141 |
| Icosapent Ethylbrand: Vascepa | 531 | 112 |
| Fluticasone Propionate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,769 across 67 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
- 2006-12-18
- Last updated
- 2022-05-05
- Certified
- 2022-05-05
Frequently asked questions
- What is Thu Thuy Huynh's NPI number?
- Thu Thuy Huynh's National Provider Identifier (NPI) is 1740343367, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thu Thuy Huynh's specialty?
- Thu Thuy Huynh is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Thu Thuy Huynh located?
- Thu Thuy Huynh's practice location on file with NPPES is 15571 Brookhurst St, Westminster, CA 92683-7554.
- What is Thu Thuy Huynh's phone number?
- The practice phone number listed in the NPPES registry for Thu Thuy Huynh is (714) 775-3066.
- Does Thu Thuy Huynh accept Medicare?
- Thu Thuy Huynh is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thu Thuy Huynh's NPI active?
- Yes — Thu Thuy Huynh's NPI (1740343367) is active in the NPPES registry as of the last update on 2022-05-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.