Calvin C Zhao, MD
Urology · Stanford
- Medicare standing
- 1 flag on the record
- Listed below.
- Plans that list them
- Not verified
- Not the same as out of network.
- Office
- 1
On the public record
- Medicare does not list them as allowed to order and refer
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 Dr. Zhao’s office at (650) 723-4000 to ask if they take your plan before you enroll.
Drugs they prescribed that Part D paid
$8,014
Pharmacies billed $8,014 in 2024.
This is pharmacy cost, not the office bill, and not what patients paid.
Opioids were 21% of their Part D prescriptions (25 of 121) in 2024. A higher opioid share than 9 in 10 peers; the typical urology clinician is at 2%.
112 generic and fewer than 11 brand-name prescriptions · $8,014 in drug cost · 19 antibiotic prescriptions to 18 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.
| Tamsulosin | 26 | $340 | $13 |
| Hydrocortisone | 12 | $123 | $10 |
| Ibuprofen | 13 | $54 | $4 |
| Oxycodone | 23 | $37 | $2 |
Year by year
| 2024 | 121 | 67 | 21% (25) | None | $8,014 |
| 2023 | 116 | 70 | 27% (31) | None | $8,522 |
| 2022 | 23 | None | None | None | $308 |
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
| Tamsulosin | 19 | $177 | $9 |
| Amoxicillin-Clavulanate Potass | 12 | $134 | $11 |
| Oxycodone | 24 | $50 | $2 |
Money from drug and device companies
$138 in 2025
| 2025 | 2 | 2 | None | $138 |
| 2024 | 2 | 2 | None | $189 |
| 2023 | 1 | 1 | None | $146 |
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 | Ams 800 Artificial Urinary Sphincter | $110 | 1 payment
|
| Coloplast | Titan | $28 | 1 payment
|
See all 2 published payments
| Boston Scientific | Meals · 2025-12-15 | Ams 800 Artificial Urinary Sphincter | $110 |
| Coloplast | Meals · 2025-03-28 | Titan | $28 |
See earlier years (2024, 2023)
2024: $189
| Boston Scientific | Ams 700 | $141 | 1 payment
|
| Medtronic | Interstim | $48 | 1 payment
|
2023: $146
| Boston Scientific | Zero Tip | $146 | 1 payment
|
Professional record
- NPI
- 1134700800
More record details
- Sole proprietor
- No
- Taxonomy
- Urology (208800000X)
- Mailing address
- 300 Pasteur Dr, Stanford, CA, 94305
- NPI first listed
- 2021-04-15
- NPI last updated
- 2025-04-28
- NPI record certified
- 2025-04-28
This is when the NPI record was last certified, not a medical board exam.