KIEN-AN DUONG (MD) – Internal Medicine Physician, NPI 1033175658
Internal Medicine Physician
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Doctor Profile
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Profile Insights
NPPES metrics only — not quality of care.
21,511 INTERNAL MEDICINE in CA
Provider Addresses for KIEN-AN DUONG (MD)
24268 EL TORO RD.
LAGUNA WOODS, CA 92637
Phone: (657) 241-8455
Fax: (657) 295-2116
Type: Mailing
24268 EL TORO ROAD
LAGUNA WOODS, CA 92637
Phone: (657) 241-8455
Fax: (657) 295-2116
Type: Location
17360, Brookhurst Street, Colonia Juarez, Fountain Valley, Orange County, California, 92708, United States
ATTN: CREDENTIALING DEPARTMENT
FOUNTAIN VALLEY, CA 927083720
Phone:
Type: Mailing
11420, Warner Avenue, Fountain Valley, Orange County, California, 92708, United States
FOUNTAIN VALLEY, CA 927082529
Phone: (714) 549-1300
Fax: (714) 433-3100
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 4 Open Payments records for all available years, with a total value of $253.
Total Amount is formed as General ($253) + Research ($0) + Ownership ($0) = $253.
Last reported payment date: 2023-10-03 • Largest payer in this snapshot: Gilead Sciences, Inc. ($129).
Total Amount
$253
General + Research + Ownership
Payments
4
Total payment records
General Amount
$253
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2023-10-03
Latest reported date
Top Companies
Largest payers in this snapshot
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2006-08-10
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20060810000594 | I | Internal Medicine | CA | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 211 | 80 | $0 |
| 36415 | Insertion of needle into vein for collection of blood sample | 164 | 73 | $0 |
| 99222 | Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 77 | 73 | $0 |
| 96372 | Injection of drug or substance under skin or into muscle | 60 | 23 | $0 |
| 90677 | Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use | 34 | 34 | $0 |
Insurance plans in this area (ZIP 92637)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | CA | |
| Diagnostic Radiology | CA | |
| Diagnostic Radiology | CA | |
| Nurse Practitioner | CA | |
| Internal Medicine, Pediatric Medicine | CA | |
| Neurology, Internal Medicine | CA | |
| - | CA | |
| - | CA | |
| - | CA | |
| Nurse Practitioner | CA |
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