Dat Duong, M.D.
NPI 1689740912 · Geriatric Medicine (Internal Medicine) Physician · Westminster, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Dat Duong, M.D. is a Geriatric Medicine (Internal Medicine) Physician provider in Westminster, CA (NPI 1689740912).
Provider details
- NPI number
- 1689740912
- Entity type
- Individual
- Primary specialty
- Geriatric Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A77545 (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
5,532 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 | 1,349 | $132 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 1,137 | $16 |
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 925 | $67 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 781 | $94 |
| Telephone Medical Discussion With Physician, 11-20 Minutes99442 | 569 | $84 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 164 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pravastatin Sodium | 1,140 | 272 |
| Atorvastatin Calcium | 845 | 220 |
| Losartan Potassium | 836 | 208 |
| Metoprolol Succinate | 786 | 206 |
| Valsartan | 657 | 178 |
| Empagliflozinbrand: Jardiance | 609 | 119 |
| Metformin Hcl | 596 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,502 across 57 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
- 2006-11-28
- Last updated
- 2020-12-31
- Certified
- 2020-12-31
Frequently asked questions
- What is Dat Duong's NPI number?
- Dat Duong's National Provider Identifier (NPI) is 1689740912, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Dat Duong's specialty?
- Dat Duong is listed in the NPPES registry with a primary specialty of Geriatric Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Dat Duong located?
- Dat Duong's practice location on file with NPPES is 13926 Beach Blvd, Westminster, CA 92683-4037.
- What is Dat Duong's phone number?
- The practice phone number listed in the NPPES registry for Dat Duong is (714) 893-1212.
- Does Dat Duong accept Medicare?
- Dat Duong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Dat Duong's NPI active?
- Yes — Dat Duong's NPI (1689740912) is active in the NPPES registry as of the last update on 2020-12-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.