Ethan K Sim, PA-C
Physician Assistant · Stanford
- Medicare standing
- Clear
- Enrolled, allowed to bill and order, not excluded
- Plans that list them
- Not verified
- Not the same as out of network.
- Office
- 1
Offices
1 location
Plan participation
Not verified
We could not verify current plan participation for this doctor. This does not mean they are out of network. Call Ethan K Sim’s office at (650) 723-4000 to ask if they take your plan before you enroll.
California Medical Board record
Licence G59743 · Cancelled
Licence status: Cancelled · since 1987 · University of Louisville School of Medicine.
License has been voluntarily canceled, or the license has been expired for at least five years and has not been renewed. 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.
Medicaid work
$516 in 2021
Medicaid paid $516 for 20 billed services this clinician did in 2021, up to 12 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.
| Short return visit (20+ min) | 20 | $516 |
| 2021 | 20 | 1 | 12 | $516 |
Drugs they prescribed that Part D paid
$11,086
Pharmacies billed $11,086 in 2024.
This is pharmacy cost, not the office bill, and not what patients paid.
140 generic and fewer than 11 brand-name prescriptions · $11,086 in drug cost · 15 antibiotic prescriptions to 12 people.
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.
| Ursodiol | 14 | $604 | $43 |
| Acyclovir | 27 | $392 | $15 |
| Sulfamethoxazole-Trimethoprim | 14 | $81 | $6 |
Year by year
| 2024 | 147 | 37 | None | None | $11,086 |
| 2023 | 200 | 45 | 0% (0) | None | $69,050 |
| 2022 | 109 | 29 | 0% (0) | None | $57,258 |
Part D prescriptions only. A drug prescribed to fewer than 11 people in a year is hidden.
See the drugs prescribed each year
2023: 3 drugs
| Atovaquone | 16 | $8,609 | $538 |
| Acyclovir | 55 | $1,541 | $28 |
| Sulfamethoxazole-Trimethoprim | 18 | $172 | $10 |
2022: 3 drugs
| Atovaquone | 12 | $6,329 | $527 |
| Acyclovir | 18 | $372 | $21 |
| Sulfamethoxazole-Trimethoprim | 13 | $122 | $9 |
Money from drug and device companies
$240 in 2025
| 2025 | 5 | 5 | None | $240 |
| 2024 | 3 | 4 | None | $432 |
| 2023 | 2 | 3 | None | $141 |
| 2022 | 2 | 2 | None | $143 |
Paid work is consulting, speaking, honoraria and royalties, as opposed to meals and travel.
A payment is not proof that care is biased.
| E.R. Squibb & Sons L.L.C. | Breyanzi | $135 | 1 payment
|
| Celgene | Breyanzi | $30 | 1 payment
|
| Genzyme | Cablivi | $28 | 1 payment
|
| Abbvie | Imbruvica | $24 | 1 payment
|
| Takeda Pharmaceuticals U.S.A. | Vonvendi | $23 | 1 payment
|
See all 5 published payments
| Genzyme | Meals · 2025-08-12 | Cablivi | $28 |
| Celgene | Meals · 2025-07-29 | Breyanzi | $30 |
| Takeda Pharmaceuticals U.S.A. | Meals · 2025-07-29 | Vonvendi | $23 |
| Abbvie | Meals · 2025-07-15 | Imbruvica | $24 |
| E.R. Squibb & Sons L.L.C. | Meals · 2025-03-13 | Breyanzi | $135 |
See earlier years (2024, 2023, 2022)
2024: $432
| Novartis Pharmaceuticals | Kymriah | $226 | 2 payments
|
| Teleflex | Arrow | $177 | 1 payment
|
| Abbvie | Imbruvica | $29 | 1 payment
|
2023: $141
| Novartis Pharmaceuticals | Kisqali | $75 | 1 payment
|
| Janssen Biotech | Carvykti | $66 | 2 payments
|
2022: $143
| Takeda Pharmaceuticals U.S.A. | Livtencity | $122 | 1 payment
|
| Incyte | Monjuvi | $21 | 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
- 1114546488
- Licence
- CA 59743California G59743: Cancelled
More record details
- Sole proprietor
- No
- Taxonomy
- Physician assistant (363A00000X)
- Mailing address
- 300 Pasteur Dr, Stanford, CA, 94305
- NPI first listed
- 2020-04-15
- NPI last updated
- 2022-02-04
- NPI record certified
- 2022-02-04
This is when the NPI record was last certified, not a medical board exam.