Thaddeus PHD Block, MD
Psychiatry · Palo Alto
- Medicare standing
- Clear
- Enrolled, allowed to bill and order, not excluded
- Plans that list them
- 4
- 1 carrier
- Offices
- 2
Offices
2 locations · Stanford Health Care · 3,152 clinicians in this group
Plans that list them
4 plans · 1 carrier
A missing listing does not mean out of network. Directories change, and a listing does not cover every office. Call Dr. Block’s office at (650) 723-4000 to confirm they take your plan. Ask about the office you use, its medical group, referrals and appointments.
| SCAN Balance (HMO C-SNP) | SCAN Health Plan | Listed | Oct 3, 2026 |
| SCAN Classic (HMO) | SCAN Health Plan | Listed | Oct 3, 2026 |
| SCAN MyChoice (HMO) | SCAN Health Plan | Listed | Oct 3, 2026 |
| SCAN Strive (HMO C-SNP) | SCAN Health Plan | Listed | Oct 3, 2026 |
California Medical Board record
Licence A76438 · Current
Licensed to practise in California · since 2001 · expires 2027-04-30 · University of California, Los Angeles School of Medicine.
No disciplinary actions, convictions, malpractice judgments or citations in this record.
Original Medicare doctor bills
$53,072
Medicare paid this office $53,072 for 38 people. Most of that is long return visits and Botox.
This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.
| Long return visit (40+ min) | 23 | $30,700 | $167 |
| Psychotherapy with evaluation and management visit, 30 minutes | 32 | $14,290 | $65 |
| Return visit (30+ min) | 26 | $6,821 | $112 |
| Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's | 14 | $704 | $15 |
Who their Medicare patients are
38 Original Medicare patients in 2024. Average age 68 · Women 58% · Health risk score 1.33. At or below the middle of the specialty; the typical psychiatry clinician is at 1.35.
Conditions among them: Depression 75% · High blood pressure 58%.
The office billed $209,444, Medicare allowed $69,030 and paid $53,072; for 517 services of 8 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 | 38 | 517 | 68 | 1.33 | $209,444 | $53,072 |
| 2023 | 37 | 617 | 68 | 1.51 | $232,106 | $48,251 |
| 2022 | 31 | 463 | 67 | 1.16 | $169,729 | $32,129 |
| 2021 | 37 | 611 | 65 | 1.18 | $219,530 | $43,315 |
| 2020 | 38 | 515 | 64 | 1.26 | $205,896 | $33,443 |
| 2019 | 28 | 307 | 61 | 1.14 | $131,126 | $25,007 |
| 2015 | 13 | 90 | 59 | 1.38 | $14,599 | $5,982 |
| 2014 | 11 | 103 | 56 | 0.79 | $14,126 | $5,787 |
| 2013 | 18 | 84 | 58 | 1.18 | $10,785 | $3,311 |
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: 4 services
| Return visit (30+ min) | 28 | $15,539 | $122 |
| Long return visit (40+ min) | 21 | $13,096 | $170 |
| Psychotherapy with evaluation and management visit, 30 minutes | 26 | $11,314 | $64 |
| Telehealth originating site facility fee | 34 | $4,670 | $22 |
2022: 3 services
| Return visit (30+ min) | 30 | $18,094 | $120 |
| Psychotherapy with evaluation and management visit, 30 minutes | 30 | $8,980 | $63 |
| Telehealth originating site facility fee | 31 | $3,446 | $22 |
2021: 3 services
| Return visit (30+ min) | 36 | $23,942 | $124 |
| Psychotherapy with evaluation and management visit, 30 minutes | 31 | $12,163 | $63 |
| Telehealth originating site facility fee | 37 | $4,475 | $22 |
2020: 3 services
| Return visit (30+ min) | 33 | $16,484 | $98 |
| Psychotherapy with evaluation and management visit, 30 minutes | 37 | $10,771 | $62 |
| Telehealth originating site facility fee | 25 | $2,996 | $21 |
2019: 3 services
| Return visit (30+ min) | 20 | $10,228 | $104 |
| Psychotherapy with evaluation and management visit, 30 minutes | 21 | $5,975 | $63 |
| Return visit (30+ min) | 17 | $3,402 | $69 |
2015: 1 service
| Return visit (30+ min) | 13 | $4,135 | $69 |
2013: 1 service
| Short return visit (20+ min) | 14 | $2,212 | $37 |
Drugs they prescribed that Part D paid
$12,484
Pharmacies billed $12,484 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 254) in 2024. At or below the middle of the specialty; the typical psychiatry clinician is at 0%.
246 generic and fewer than 11 brand-name prescriptions · $12,484 in drug cost · 36 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.
| Desvenlafaxine Succinate Er | 20 | $615 | $31 |
| Aripiprazole | 22 | $550 | $25 |
| Bupropion Xl | 15 | $416 | $28 |
| Trazodone | 20 | $219 | $11 |
| Gabapentin | 14 | $158 | $11 |
See all 9 drugs
| Desvenlafaxine Succinate Er | 20 | $615 | $31 |
| Aripiprazole | 22 | $550 | $25 |
| Bupropion Xl | 15 | $416 | $28 |
| Trazodone | 20 | $219 | $11 |
| Gabapentin | 14 | $158 | $11 |
| Sertraline | 19 | $157 | $8 |
| Lamotrigine | 18 | $105 | $6 |
| Quetiapine | 13 | $74 | $6 |
| Clonazepam | 11 | $67 | $6 |
Year by year
| 2024 | 254 | 20 | 0% (0) | None | $12,484 |
| 2023 | 212 | 20 | 0% (0) | 8% | $79,832 |
| 2022 | 352 | 24 | 0% (0) | 7% | $81,857 |
| 2021 | 388 | 24 | 0% (0) | 6% | $26,284 |
| 2020 | 221 | 16 | 0% (0) | 14% | $35,294 |
| 2019 | 149 | 19 | 0% (0) | 7% | $18,950 |
| 2018 | 87 | None | 0% (0) | None | $2,115 |
| 2017 | 80 | None | 0% (0) | None | $12,185 |
| 2016 | 72 | None | 0% (0) | None | $2,708 |
| 2015 | 198 | 11 | 0% (0) | None | $10,079 |
| 2014 | 185 | 12 | 0% (0) | 14% | $20,989 |
| 2013 | 172 | None | 0% (0) | 25% | $30,308 |
Part D prescriptions only. A drug prescribed to fewer than 11 people in a year is hidden.
See the drugs prescribed each year
2023: 4 drugs
| Sertraline | 23 | $669 | $29 |
| Desvenlafaxine Succinate Er | 13 | $594 | $46 |
| Armodafinil | 11 | $384 | $35 |
| Mirtazapine | 14 | $270 | $19 |
2022: 14 drugs
| Venlafaxine Hcl Er | 36 | $565 | $16 |
| Armodafinil | 11 | $517 | $47 |
| Lamotrigine | 12 | $352 | $29 |
| Bupropion Xl | 12 | $285 | $24 |
| Trazodone | 25 | $246 | $10 |
| Sertraline | 19 | $246 | $13 |
| Mirtazapine | 19 | $200 | $11 |
| Propranolol | 12 | $198 | $17 |
| Gabapentin | 17 | $153 | $9 |
| Lithium Carbonate Er | 15 | $130 | $9 |
| Quetiapine | 16 | $70 | $4 |
| Clonazepam | 11 | $60 | $5 |
| Lithium Carbonate | 32 | $58 | $2 |
| Nortriptyline | 11 | $14 | $1 |
2021: 14 drugs
| Bupropion Xl | 12 | $1,421 | $118 |
| Aripiprazole | 16 | $1,399 | $87 |
| Venlafaxine Hcl Er | 31 | $761 | $25 |
| Pregabalin | 11 | $384 | $35 |
| Quetiapine | 30 | $268 | $9 |
| Duloxetine | 12 | $244 | $20 |
| Sertraline | 23 | $236 | $10 |
| Trazodone | 15 | $188 | $13 |
| Buspirone | 12 | $162 | $13 |
| Lithium Carbonate Er | 17 | $136 | $8 |
| Lithium Carbonate | 33 | $107 | $3 |
| Clonazepam | 19 | $103 | $5 |
| Nortriptyline | 16 | $78 | $5 |
| Mirtazapine | 15 | $37 | $2 |
2020: 8 drugs
| Rexulti | 11 | $19,735 | $1,794 |
| Pregabalin | 13 | $251 | $19 |
| Duloxetine | 15 | $187 | $12 |
| Gabapentin | 15 | $172 | $11 |
| Quetiapine | 19 | $118 | $6 |
| Clonazepam | 12 | $101 | $8 |
| Lithium Carbonate | 14 | $74 | $5 |
| Lithium Carbonate Er | 11 | $45 | $4 |
2019: 3 drugs
| Lamotrigine | 13 | $133 | $10 |
| Clonazepam | 15 | $114 | $8 |
| Sertraline | 12 | $89 | $7 |
2018: 2 drugs
| Lamotrigine | 22 | $181 | $8 |
| Olanzapine | 11 | $173 | $16 |
2017: 2 drugs
| Clozapine | 12 | $852 | $71 |
| Sertraline | 13 | $82 | $6 |
2016: 3 drugs
| Duloxetine | 21 | $1,093 | $52 |
| Gabapentin | 13 | $207 | $16 |
| Sertraline | 13 | $62 | $5 |
2015: 8 drugs
| Duloxetine | 52 | $3,759 | $72 |
| Hydroxyzine | 11 | $1,345 | $122 |
| Quetiapine | 22 | $191 | $9 |
| Propranolol | 12 | $157 | $13 |
| Sertraline | 12 | $143 | $12 |
| Lamotrigine | 14 | $84 | $6 |
| Trazodone | 13 | $78 | $6 |
| Citalopram Hbr | 18 | $78 | $4 |
2014: 6 drugs
| Bupropion Xl | 21 | $1,840 | $88 |
| Escitalopram | 20 | $404 | $20 |
| Haloperidol | 16 | $379 | $24 |
| Mirtazapine | 11 | $96 | $9 |
| Propranolol | 12 | $89 | $7 |
| Bupropion Hcl Sr | 12 | $72 | $6 |
2013: 5 drugs
| Seroquel Xr | 26 | $15,082 | $580 |
| Bupropion Xl | 12 | $1,027 | $86 |
| Escitalopram | 22 | $980 | $45 |
| Bupropion Hcl Sr | 18 | $256 | $14 |
| Haloperidol | 13 | $181 | $14 |
Money from drug and device companies
$19 in 2025
A payment is not proof that care is biased.
| ITI Inc. (d/b/a Intra-Cellular Therapies Inc.) | Caplyta | $19 | 1 payment
|
See the published payment
| ITI Inc. (d/b/a Intra-Cellular Therapies Inc.) | Meals · 2025-06-17 | Caplyta | $19 |
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
- 1497897433
- Licence
- CA A76438California A76438: Current · expires 2027-04-30
- Group
- Stanford Health Care
- Video visits
- Lists video visits
- Gender
- Male
More record details
- Sole proprietor
- No
- Taxonomy
- Psychiatry (2084P0800X)
- Mailing address
- 300 Pasteur Dr, Palo Alto, CA, 94304
- NPI first listed
- 2007-02-13
- NPI last updated
- 2024-04-29
- NPI record certified
- 2024-04-29
This is when the NPI record was last certified, not a medical board exam.
Extra NPI addresses: 401 Quarry Rd, Palo Alto, CA, 94304