Doctor profile · Federal record

Dr. KIEN-AN DUONG, MD

Internal Medicine Physician (CMS: INTERNAL MEDICINE) · Pediatrics Physician · LAGUNA WOODS, CA

  • NPI 1033175658
  • Accepts Medicare
  • 25 yrs in practice
  • Licensed in 2 states
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
24268 EL TORO ROAD
LAGUNA WOODS, CA 92637
(657) 241-8455
fax (657) 295-2116
Mailing address
24268 EL TORO RD.
LAGUNA WOODS, CA 92637

Credentials & registration

NPPES · NUCC
NPI registered
April 2006 — 20 yrs on file
Profile last updated
January 31, 2025
Year of graduation
2001 — 25 yrs since
Specialty taxonomy
207R00000X — NUCC code
State licenses (2)
California #A94108 · New York #236804
Medicaid
CA #00A941080

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1033175658. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
667
Distinct HCPCS
10
Medicare allowed
$49,612
HCPCS Description Services Patients Avg allowed
99214 Established patient office or other outpatient visit, 30-39 minutes 211 80 $107
36415 Insertion of needle into vein for collection of blood sample 164 73 $6
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 77 73 $139
96372 Injection of drug or substance under skin or into muscle 60 23 $16
90677 Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use 34 34 $281
G0008 Administration of influenza virus vaccine 33 31 $34
J3420 Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg 30 19 $1
90662 Influenza vaccine split virus, preservative free 25 23 $72
G0009 Administration of pneumococcal vaccine 18 18 $34
99213 Established patient office or other outpatient visit, 20-29 minutes 15 13 $86

In context: peer comparison

Among 1 peers in this city , average services per provider: 66. This provider delivers 10× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
3,823
Patients
1,145
Total drug cost
$203,512
Drug Type Claims Patients Total cost
Atorvastatin Calcium Generic 747 233 $13,922
Losartan Potassium Generic 490 147 $8,803
Metformin Hcl Generic 309 96 $4,794
Amlodipine Besylate Generic 294 85 $3,376
Tamsulosin Hcl Generic 294 96 $6,573
Lisinopril Generic 248 75 $3,521
Levothyroxine Sodium Generic 236 52 $4,735
Metoprolol Tartrate Generic 202 68 $2,541
Gabapentin Generic 189 45 $3,871
Omeprazole Generic 168 52 $3,388

Hospital affiliations

CMS Hospital Compare