Doctor profile · Federal record
Dr. Alexander Nguyen, D.O.
Hospitalist Physician (CMS: Internal Medicine) · Internal Medicine Physician · Irvine, CA
- NPI 1265842470
- Accepts Medicare
- 12 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 6 locations .
- Primary practice
-
11 Technology Dr
Irvine, CA 926182302
(949) 923-3200 - Additional location
-
100 E Valencia Mesa Dr
Fullerton, CA 928353813
(714) 447-5027 - Additional location
-
1680 E 120Th St
Los Angeles, CA 900593026
(424) 338-8000 - Additional location
-
1798 N Garey Ave
Pomona, CA 917672918
(909) 865-7251 - Additional location
-
1880 N Orange Grove Ave
Pomona, CA 917673006
(909) 630-7158
fax (909) 630-7983 - Additional location
-
9920 Talbert Ave
Fountain Valley, CA 927085153
(714) 378-7000 - Mailing address
-
Po Box 35380
Las Vegas, NV 891335380
Show 3 more locations
Credentials & registration
- NPI registered
- April 2014 — 12 yrs on file
- Profile last updated
- January 4, 2026
- Year of graduation
- 2014 — 12 yrs since
- Specialty taxonomy
- 208M00000X — NUCC code
- State license (1)
- California #20A14372
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1265842470. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
787
Distinct HCPCS
5
Medicare allowed
$101,674
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 431 | 182 | $125 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 151 | 146 | $183 | |
99239 |
Hospital discharge day management, more than 30 minutes | 99 | 98 | $121 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 85 | 65 | $83 | |
99231 |
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 21 | 18 | $52 |
In context: peer comparison
Among 17 peers in Irvine Hospitalist Physician, average services per provider: 151. This provider delivers 5.2× the peer median.Open Payments
Industry payments received
All-time total
$388
Transactions
9
Manufacturers
4
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Pfizer INC. | 3 | $160.90 | |
| Zoll Services LLC (A/K/A Zoll LifeCor Corp) | 2 | $145.84 | |
| Janssen Pharmaceuticals, INC | 3 | $57.44 | |
| Kestra Medical Technology Services, INC. | 1 | $23.77 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
268
Patients
233
Total drug cost
$11,352
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Levofloxacin | Generic | 38 | 37 | $241 |
| Ondansetron Odt (Ondansetron) | Brand | 29 | 27 | $198 |
| Atorvastatin Calcium | Generic | 26 | 22 | $239 |
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 24 | 24 | $150 |
| Ciprofloxacin Hcl | Generic | 23 | 23 | $209 |
| Clopidogrel (Clopidogrel Bisulfate) | Brand | 20 | 18 | $138 |
| Nitroglycerin | Generic | 20 | 19 | $295 |
| Cephalexin | Generic | 19 | 19 | $62 |
| Eliquis (Apixaban) | Brand | 18 | 0 | $9,546 |
| Furosemide | Generic | 18 | 16 | $65 |
Frequently asked questions
What is Dr. Alexander Nguyen's medical specialty?
Dr. Alexander Nguyen practices Hospitalist Physician in Irvine, CA.
Where does Dr. Alexander Nguyen practice?
Dr. Alexander Nguyen practices at 11 Technology Dr, Irvine, CA 926182302. Office phone: 9499233200.
What is Dr. Alexander Nguyen's NPI?
Dr. Alexander Nguyen's National Provider Identifier (NPI) is 1265842470, issued by NPPES.
Does Dr. Alexander Nguyen accept Medicare assignment?
Yes. Dr. Alexander Nguyen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Alexander Nguyen commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Initial hospital care with moderate level of medical decision making (HCPCS 99223); Hospital discharge day management (HCPCS 99239). Source: CMS Medicare Physician & Other Practitioners file.