Ashley Katherine Nguyentat, PA
Physician Assistant · Irvine
- Medicare standing
- 1 flag on the record
- Listed below.
- Plans that list them
- Not verified
- Not the same as out of network.
- Offices
- 3
- Since medical school
- 7 years
- University of Colorado School of Medicine, Aurora, 2019
On the public record
- California licence: Delinquent
Offices
3 locations · City of Hope Medical Foundation · 964 clinicians in this group
Plan participation
Not verified
We could not verify current plan participation for this doctor. This does not mean they are out of network. Call Ashley Katherine Nguyentat’s office to ask if they take your plan before you enroll.
California Medical Board record
Licence A60403 · Delinquent
Licence status: Delinquent · since 2005 · expires 2025-09-30 · Loma Linda University School of Medicine.
License renewal fee has not been paid. No practice is permitted.
Matched on the licence number without its letter prefix; check the name before relying on it.
No disciplinary actions, convictions, malpractice judgments or citations in this record.
Original Medicare doctor bills
$5,340
Medicare paid this office $5,340 for 45 people.
This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.
| Drainage of fluid from abdominal cavity using imaging guidance | 16 | $1,993 | $69 |
Procedures year by year
| Procedure | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|
| Drainage of fluid from abdominal cavity using imaging guidance | – | – | – | – | – | 29 |
Times billed to Original Medicare each year. A blank year means fewer than 11 people had it, or none: Medicare does not publish smaller counts. Medicare Advantage patients are not included.
Who their Medicare patients are
45 Original Medicare patients in 2024. Average age 77 · Women 51% · Health risk score 2.87. Sicker patients than 9 in 10 peers; the typical physician assistant clinician is at 1.31.
Conditions among them: High blood pressure 75% · Cancer 64% · Chronic kidney disease 38% · Diabetes 31% · Heart failure 27% · Atrial fibrillation 27%.
The office billed $26,237, Medicare allowed $6,723 and paid $5,340; for 75 services of 16 kinds.
Original Medicare patients only. A risk score of 1.0 is the average Medicare patient; higher means sicker. Any count under 11 is hidden.
Year by year
| 2024 | 45 | 75 | 77 | 2.87 | $26,237 | $5,340 |
| 2023 | 381 | 458 | 72 | 2.61 | $249,535 | $35,610 |
| 2022 | 147 | 158 | 70 | 2.38 | $90,405 | $12,024 |
| 2021 | 65 | 79 | 67 | 1.67 | $54,953 | $5,840 |
| 2020 | 81 | 98 | 68 | 2.16 | $74,060 | $7,575 |
| 2019 | 21 | 23 | 71 | 2.30 | $16,790 | $1,795 |
Original Medicare only. A service billed for fewer than 11 people in a year is hidden, so the lines can add up to less than the year's total.
See the services billed each year
2023: 8 services
| New patient visit (45+ min) | 69 | $6,331 | $92 |
| Return visit (30+ min) | 79 | $6,293 | $72 |
| Long return visit (40+ min) | 51 | $5,393 | $106 |
| Initial hospital care with straightforward or low level of medical decision making, per day at least 40 minutes | 71 | $4,647 | $63 |
| Initial hospital care with straightforward or low-level medical decision making at least 55 minutes | 42 | $4,370 | $99 |
| New patient visit (60+ min) | 21 | $2,774 | $132 |
| Subsequent hospital care with straightforward or low level of medical decision making, per day at least 25 minutes | 54 | $2,213 | $38 |
| New patient visit (30+ min) | 18 | $1,078 | $60 |
2022: 5 services
| Subsequent hospital care with moderate levelof medical decision making at least 35 minutes | 49 | $2,714 | $54 |
| New patient visit (45+ min) | 23 | $2,378 | $103 |
| Long return visit (40+ min) | 21 | $2,359 | $112 |
| Emergency department visit with high level of medical decision making | 11 | $1,173 | $107 |
| Subsequent hospital care with straightforward or low level of medical decision making, per day at least 25 minutes | 14 | $408 | $29 |
2021: 3 services
| Emergency department visit with high level of medical decision making | 27 | $3,288 | $122 |
| Emergency department visit with moderate level of medical decision making | 17 | $1,167 | $69 |
| Emergency department visit with low level of medical decision making | 14 | $638 | $46 |
2020: 3 services
| Emergency department visit with high level of medical decision making | 31 | $3,735 | $113 |
| Emergency department visit with moderate level of medical decision making | 23 | $1,816 | $79 |
| Emergency department visit with low level of medical decision making | 21 | $849 | $40 |
Medicaid work
$7,912 in 2022
Medicaid paid $7,912 for 115 billed services this clinician did in 2022, up to 21 people in a month for one service.
Medicaid and CHIP claims where this clinician did the service, fee-for-service and managed care together. Any month with fewer than 11 patients is hidden, so small Medicaid practices undercount.
| EMERGENCY DEPT VISIT MOD MDM | 42 | $3,791 |
| EMERGENCY DEPT VISIT LOW MDM | 60 | $2,238 |
| EMERGENCY DEPARTMENT VISIT HIGH MDM | 13 | $1,884 |
| 2022 | 115 | 3 | 21 | $7,912 |
| 2021 | 178 | 3 | 24 | $9,631 |
| 2020 | 150 | 3 | 22 | $9,955 |
| 2019 | 27 | 2 | 12 | $1,592 |
See the largest Medicaid services in earlier years
2021
| EMERGENCY DEPT VISIT LOW MDM | 147 | $6,627 |
| EMERGENCY DEPT VISIT MOD MDM | 16 | $1,555 |
| EMERGENCY DEPARTMENT VISIT HIGH MDM | 15 | $1,449 |
2020
| EMERGENCY DEPT VISIT MOD MDM | 64 | $4,975 |
| EMERGENCY DEPARTMENT VISIT HIGH MDM | 29 | $2,595 |
| EMERGENCY DEPT VISIT LOW MDM | 57 | $2,385 |
2019
| EMERGENCY DEPARTMENT VISIT HIGH MDM | 14 | $906 |
| EMERGENCY DEPT VISIT MOD MDM | 13 | $686 |
Drugs they prescribed that Part D paid
$4,582
Pharmacies billed $4,582 in 2024.
This is pharmacy cost, not the office bill, and not what patients paid.
Opioids were 0% of their Part D prescriptions (0 of 25) in 2024. Too few prescriptions to judge: with under about 50 a year, a handful of patients can swing this share.
22 generic and fewer than 11 brand-name prescriptions · $4,582 in drug cost.
Part D prescriptions only. The opioid rate is opioid prescriptions as a share of all this clinician's Part D prescriptions; surgeons and pain specialists run higher than others, so it is shown against the same specialty.
Year by year
| 2024 | 25 | 14 | 0% (0) | None | $4,582 |
| 2023 | 42 | 21 | None | None | $2,466 |
| 2022 | 102 | 62 | 18% (18) | None | $1,021 |
| 2021 | 142 | 99 | 9% (13) | 10% | $6,302 |
| 2020 | 115 | 72 | 10% (12) | 10% | $3,157 |
| 2019 | 23 | 15 | None | None | $160 |
Part D prescriptions only. A drug prescribed to fewer than 11 people in a year is hidden.
See the drugs prescribed each year
2022: 2 drugs
| Ondansetron Odt | 18 | $141 | $8 |
| Oxycodone | 12 | $96 | $8 |
2021: 1 drug
| Cefuroxime | 21 | $324 | $15 |
Money from drug and device companies
$93 in 2025
| 2025 | 2 | 3 | None | $93 |
| 2024 | 2 | 2 | None | $35 |
Paid work is consulting, speaking, honoraria and royalties, as opposed to meals and travel.
A payment is not proof that care is biased.
| Boston Scientific | Embold Fibered | $68 | 2 payments
|
| Inari Medical | Flowtriever Catheter, S | $25 | 1 payment
|
See all 3 published payments
| Boston Scientific | Meals · 2025-03-14 | Embold Fibered | $39 |
| Boston Scientific | Meals · 2025-03-03 | Embold Fibered | $30 |
| Inari Medical | Meals · 2025-01-24 | Flowtriever Catheter, S | $25 |
See earlier years (2024)
2024: $35
| Progenics Pharmaceuticals | Pylarify | $19 | 1 payment
|
| Jazz Pharmaceuticals | Zepzelca | $16 | 1 payment
|
Checkups this office reported
Medicare did not publish checkup rates for this clinician.
- Medicare’s overall office score
- 76.5 / 100
- Scores the office’s reporting and systems. It is not a grade for how the doctor treats you.
Professional record
- NPI
- 1215589007
- Licence
- CA 60403California A60403: Delinquent · expires 2025-09-30
- Trained
- University of Colorado School of Medicine, Aurora, 2019 · 7 years ago
- Video visits
- Lists video visits
- Gender
- Female
More record details
- Sole proprietor
- No
- Taxonomy
- Physician assistant (363A00000X)
- Mailing address
- 300 Pasteur Dr, Stanford, CA, 94305
- NPI first listed
- 2019-07-11
- NPI last updated
- 2023-11-21
- NPI record certified
- 2023-11-21
This is when the NPI record was last certified, not a medical board exam.
Extra NPI addresses: 1500 Duarte Rd, Duarte, CA, 91010
This office lists an electronic records connection.