Doctor profile · Federal record
Dr. Tammy Nguyen, PA-C
Physician Assistant · Los Alamitos, CA
- NPI 1326682428
- Accepts Medicare
- 6 yrs in practice
- Female
- Solo practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
3460 Katella Ave
Los Alamitos, CA 907202334
(562) 594-6599
fax (562) 594-7116 - Additional location
-
1125 E 17Th St Ste N452
Santa Ana, CA 927012270
(714) 597-7214
fax (714) 727-3290 - Mailing address
-
Po Box 35380
Las Vegas, NV 891335380
Credentials & registration
- NPI registered
- October 2019 — 7 yrs on file
- Profile last updated
- November 24, 2025
- Year of graduation
- 2020 — 6 yrs since
- Specialty taxonomy
- 363A00000X — NUCC code
- State license (1)
- California #59081
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1326682428. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
259
Distinct HCPCS
4
Medicare allowed
$21,752
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 124 | 104 | $83 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 94 | 83 | $118 | |
93000 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 22 | 22 | $14 | |
36415 |
Insertion of needle into vein for collection of blood sample | 19 | 19 | $5 |
In context: peer comparison
Among 4 peers in Los Alamitos Physician Assistant, average services per provider: 56. This provider delivers 4.6× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
542
Patients
332
Total drug cost
$8,087
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 71 | 35 | $1,119 |
| Lisinopril | Generic | 54 | 33 | $790 |
| Losartan Potassium | Generic | 53 | 32 | $838 |
| Amlodipine Besylate | Generic | 49 | 32 | $563 |
| Metformin Hcl | Generic | 44 | 32 | $441 |
| Levothyroxine Sodium | Generic | 34 | 20 | $671 |
| Rosuvastatin Calcium | Generic | 33 | 19 | $647 |
| Gabapentin | Generic | 32 | 20 | $481 |
| Omeprazole | Generic | 30 | 17 | $489 |
| Tamsulosin Hcl | Generic | 28 | 17 | $791 |
Frequently asked questions
What is Dr. Tammy Nguyen's medical specialty?
Dr. Tammy Nguyen practices Physician Assistant in Los Alamitos, CA.
Where does Dr. Tammy Nguyen practice?
Dr. Tammy Nguyen practices at 3460 Katella Ave, Los Alamitos, CA 907202334. Office phone: 5625946599.
What is Dr. Tammy Nguyen's NPI?
Dr. Tammy Nguyen's National Provider Identifier (NPI) is 1326682428, issued by NPPES.
Does Dr. Tammy Nguyen accept Medicare assignment?
Yes. Dr. Tammy Nguyen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Tammy Nguyen commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99214); Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (HCPCS 93000). Source: CMS Medicare Physician & Other Practitioners file.