Kien-An Duong, MD
NPI 1033175658 · Internal Medicine Physician · Laguna Woods, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kien-An Duong, MD is a Internal Medicine Physician provider in Laguna Woods, CA (NPI 1033175658).
Provider details
- NPI number
- 1033175658
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A94108 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
745 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 | 231 | $109 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 187 | $6 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 92 | $135 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 69 | $16 |
| 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 | 63 | $17 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 140 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 832 | 263 |
| Losartan Potassium | 545 | 161 |
| Amlodipine Besylate | 354 | 109 |
| Tamsulosin Hcl | 339 | 102 |
| Metformin Hcl | 337 | 103 |
| Lisinopril | 235 | 70 |
| Levothyroxine Sodium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-04-22
- Last updated
- 2025-01-31
- Certified
- 2025-01-31
Frequently asked questions
- What is Kien-An Duong's NPI number?
- Kien-An Duong's National Provider Identifier (NPI) is 1033175658, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kien-An Duong's specialty?
- Kien-An Duong is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Kien-An Duong located?
- Kien-An Duong's practice location on file with NPPES is 24268 El Toro Road, Laguna Woods, CA 92637.
- What is Kien-An Duong's phone number?
- The practice phone number listed in the NPPES registry for Kien-An Duong is (657) 241-8455.
- Does Kien-An Duong accept Medicare?
- Kien-An Duong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kien-An Duong's NPI active?
- Yes — Kien-An Duong's NPI (1033175658) is active in the NPPES registry as of the last update on 2025-01-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.