Allison Chang, MD
Psychiatry · Palo Alto
- 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. Chang’s office at (650) 725-0957 to ask if they take your plan before you enroll.
Drugs they prescribed that Part D paid
$66,524
Pharmacies billed $66,524 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 238) in 2024. At or below the middle of the specialty; the typical psychiatry & neurology clinician is at 0%.
225 generic and 13 brand-name prescriptions · $66,524 in drug cost · 50 antipsychotic prescriptions to people over 65.
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.
| Aripiprazole | 19 | $1,821 | $96 |
| Mirtazapine | 31 | $666 | $21 |
| Olanzapine | 16 | $512 | $32 |
| Quetiapine | 12 | $371 | $31 |
| Risperidone | 14 | $293 | $21 |
See all 8 drugs
| Aripiprazole | 19 | $1,821 | $96 |
| Mirtazapine | 31 | $666 | $21 |
| Olanzapine | 16 | $512 | $32 |
| Quetiapine | 12 | $371 | $31 |
| Risperidone | 14 | $293 | $21 |
| Escitalopram | 18 | $279 | $15 |
| Buspirone | 15 | $154 | $10 |
| Sertraline | 12 | $90 | $7 |
Year by year
| 2024 | 238 | 50 | 0% (0) | 5% | $66,524 |
| 2023 | 43 | 15 | 0% (0) | None | $2,064 |
| 2022 | 39 | None | None | None | $3,409 |
Part D prescriptions only. A drug prescribed to fewer than 11 people in a year is hidden.
Money from drug and device companies
$127 in 2025
| 2025 | 2 | 6 | None | $127 |
| 2024 | 1 | 1 | None | $21 |
Paid work is consulting, speaking, honoraria and royalties, as opposed to meals and travel.
A payment is not proof that care is biased.
| Teva Pharmaceuticals USA | Austedo Xr | $108 | 5 payments
|
| Otsuka America Pharmaceutical | Rexulti | $19 | 1 payment
|
See all 6 published payments
| Teva Pharmaceuticals USA | Meals · 2025-06-02 | Austedo Xr | $20 |
| Teva Pharmaceuticals USA | Meals · 2025-05-20 | Uzedy | $26 |
| Otsuka America Pharmaceutical | Meals · 2025-04-24 | Rexulti | $19 |
| Teva Pharmaceuticals USA | Meals · 2025-04-14 | Austedo Xr | $17 |
| Teva Pharmaceuticals USA | Meals · 2025-03-31 | Austedo Xr | $25 |
| Teva Pharmaceuticals USA | Meals · 2025-02-03 | Austedo Xr | $20 |
See earlier years (2024)
2024: $21
| Teva Pharmaceuticals USA | Austedo Xr | $21 | 1 payment
|
Professional record
- NPI
- 1114662574
- Licence
- HI MDR-8286
More record details
- Sole proprietor
- No
- Taxonomy
- Psychiatry (2084P0800X); Federal specialty code 2084P0804X (2084P0804X)
- Mailing address
- 401 Quarry Rd Rm 2206, Palo Alto, CA, 94304
- NPI first listed
- 2022-04-30
- NPI last updated
- 2025-04-15
- NPI record certified
- 2025-04-15
This is when the NPI record was last certified, not a medical board exam.