Physician Assistant · Tustin, CA
NPI
1194291484
Since 2018
Specialty
Physician Assistant
Code 363A00000X
Group practices
0
Medicare group memberships
Hospitals
0
Hospital affiliations
661 W 1st St Ste G
Tustin, CA, 92780
Phone (714) 665-9890
Medicare paid, 2023
$21K
431 services
Medicare patients, 2023
165
Average age 73
Drug cost, 2024
$492K
1,889 prescriptions
Company payments, 2025
$940
From 13 companies
Procedures and visits billed to Original Medicare, 2023
In 2023, the most common Medicare service billed by Haley Nguyen was code 99213 (office e&m - established), 240 times for 115 patients. In total Haley Nguyen billed 431 services in 25 codes, and Medicare paid $21K.
| Code |
|---|
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2024-07-26.
| Setting |
|---|
| Services |
|---|
| Patients |
|---|
| Paid per service |
|---|
| Medicare paid |
|---|
| 99213 Office E&M - Established | Office | 240 | 115 | $51.61 | $12K |
| 99214 Office E&M - Established | Office | 54 | 48 | $65.08 | $3,514 |
| 96372 Injection Administration | Office | 47 | 36 | $8.50 | $399 |
By year: 2022 $22K for 461 services; 2023 $21K for 431 services.
Medicare prescription drug claims, 2024
In 2024, the drug Haley Nguyen prescribed most often to Medicare patients was Omeprazole, with 208 prescriptions and refills. In total Haley Nguyen wrote 1,889 Medicare prescriptions that cost $492K.
| Drug | Claims | 30-day fills | Patients | Cost |
|---|---|---|---|---|
| Omeprazole Generic | 208 | 511 | 94 | $2,484 |
| Pantoprazole Sodium Generic | 189 | 526 | 86 | $1,942 |
| Famotidine Generic | 115 | 329 | 62 | $1,869 |
| Gavilyte-G Peg3350/Sod Sulf,bicarb,cl/Kcl | 94 | 94 | 91 | $1,564 |
| Peg3350-Sod Sul-Nacl-Kcl-Asb-C Peg3350/Sod Sul/Nacl/Kcl/Asb/C | 79 | 79 | 79 | $4,570 |
| Atorvastatin Calcium Generic | 79 | 218 | 45 | $538 |
| Vemlidy Tenofovir Alafenamide | 77 | 107 | 16 | $152K |
| Losartan Potassium Generic | 53 | 139 | 27 | $447 |
| Amlodipine Besylate Generic | 50 | 138 | 32 | $233 |
| Sod Sulf-Potass Sulf-Mag Sulf Sodium, Potassium,mag Sulfates | 49 | 49 | 49 | $2,903 |
| Dicyclomine Hcl Generic | 43 | 103 | 24 | $940 |
| Metformin Hcl Generic | 31 | 57 | 13 | $159 |
| Esomeprazole Magnesium Generic | 30 | 82 | 15 | $1,529 |
| Peg-3350 And Electrolytes Peg3350/Sod Sulf,bicarb,cl/Kcl | 25 | 25 | 25 | $438 |
| Zenpep Lipase/Protease/Amylase | 24 | 35 | Under 11 | $53K |
Brand drugs: 368 claims; generic drugs: 1,497 claims.
Money and other things of value reported by the companies
In 2025, drug and medical device companies paid Haley Nguyen $940 ($940 in general payments such as food, travel and fees) from 13 companies. The largest payer was Dexcom, Inc. with $298.
| Company | Payments | Amount |
|---|---|---|
| Dexcom, Inc. DXCM | 5 | $298 |
| Insulet Corporation PODD | 3 | $213 |
| Gilead Sciences, Inc. GILD | 5 | $136 |
| Amgen Inc. AMGN | 2 | $48.85 |
| Novo Nordisk Inc NVO | 2 | $44.63 |
| Abbvie Inc. ABBV | 2 | $38.29 |
| Corcept Therapeutics CORT | 2 | $29.54 |
| Lilly USA, LLC LLY | 1 | $29.52 |
| Recordati_rare_diseases_inc. | 1 | $23.27 |
| Xeris Pharmaceuticals, Inc. | 1 | $22.22 |
Official US government data on Original Medicare services, Medicare prescription drug plans and the payments drug and device companies must report. Services with fewer than 11 patients and drugs with fewer than 11 claims are not published. Procedure codes are shown by number with their public category.