Ryan Chang
Medical Oncology · San Mateo
- Medicare standing
- Clear
- Enrolled, allowed to bill and order, not excluded
- Plans that list them
- 9
- 1 carrier
- Office
- 1
Offices
1 location
Plans that list them
9 plans · 1 carrier
A missing listing does not mean out of network. Directories change, and a listing does not cover every office. Call Ryan Chang’s office at (415) 514-7520 to confirm they take your plan. Ask about the office you use, its medical group, referrals and appointments.
| Alignment Health BreathEasy (HMO C-SNP) | Alignment Health Plan | Listed | Oct 3, 2026 |
| Alignment Health Clarity (HMO C-SNP) | Alignment Health Plan | Listed | Oct 3, 2026 |
| Alignment Health Harmony (HMO) | Alignment Health Plan | Listed | Oct 3, 2026 |
| Alignment Health Heart & Diabetes (HMO C-SNP) | Alignment Health Plan | Listed | Oct 3, 2026 |
| Alignment Health Heart & Diabetes CalPlus (HMO C-SNP) | Alignment Health Plan | Listed | Oct 3, 2026 |
| Alignment Health Heart & Diabetes Care (HMO C-SNP) | Alignment Health Plan | Listed | Sep 28, 2026 |
| Alignment Health Heart & Diabetes Choice (HMO C-SNP) | Alignment Health Plan | Listed | Sep 28, 2026 |
| Alignment Health Honor+ Plan (HMO) | Alignment Health Plan | Listed | Oct 3, 2026 |
| Alignment Health My Choice CalCare (HMO) | Alignment Health Plan | Listed | Oct 3, 2026 |
Drugs they prescribed that Part D paid
$242,546
Pharmacies billed $242,546 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 50) in 2024. At or below the middle of the specialty; the typical hematology-oncology clinician is at 5%.
34 generic and 16 brand-name prescriptions · $242,546 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.
| Abiraterone Acetate | 14 | $2,586 | $185 |
| Prednisone | 15 | $107 | $7 |
Money from drug and device companies
$89 in 2025
| 2025 | 1 | 1 | None | $89 |
| 2024 | 1 | 1 | None | $85 |
| 2022 | 1 | 1 | None | $28 |
Paid work is consulting, speaking, honoraria and royalties, as opposed to meals and travel.
A payment is not proof that care is biased.
| Abbvie | Botox | $89 | 1 payment
|
See the published payment
| Abbvie | Meals · 2025-09-06 | Botox | $89 |
See earlier years (2024, 2022)
2024: $85
| Medtronic | Intellis Adaptivestim | $85 | 1 payment
|
2022: $28
| 180 Medical | None | $28 | 1 payment
|
Professional record
- NPI
- 1164985263
More record details
- Sole proprietor
- No
- Taxonomy
- Medical oncology (207RX0202X)
- Mailing address
- 1 Hawthorne St Unit 20f, San Francisco, CA, 94105
- NPI first listed
- 2019-04-08
- NPI last updated
- 2024-08-28
- NPI record certified
- 2024-08-28
This is when the NPI record was last certified, not a medical board exam.