Catherine S Brennan, MD
Psychiatry · Davis
- 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
- Since medical school
- 36 years
- University of Southern California Keck School of Medicine, 1990
Offices
1 location · Mark David Levine MD Professional Corporation · 165 clinicians in this group
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. Brennan’s office at (530) 297-7500 to ask if they take your plan before you enroll.
California Medical Board record
Licence G73257 · Current
Licensed to practise in California · since 1992 · expires 2027-11-30 · University of Southern California Keck School of Medicine.
No disciplinary actions, convictions, malpractice judgments or citations in this record.
School, training and certification
What this clinician told their state board, medical school and everything before it. Only some states publish this, so nothing here means the state does not say, not that there was no training or certification.
Specialty certification
- American Board of Psychiatry and Neurology - Psychiatry
Medicaid work
$2,949 in 2021
Medicaid paid $2,949 for 26 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.
| Return visit (30+ min) | 26 | $2,949 |
| 2021 | 26 | 1 | 12 | $2,949 |
| 2020 | 50 | 1 | 13 | $2,572 |
| 2019 | 13 | 1 | 13 | $1,140 |
See the largest Medicaid services in earlier years
2020
| Return visit (30+ min) | 50 | $2,572 |
2019
| Return visit (30+ min) | 13 | $1,140 |
Drugs they prescribed that Part D paid
$24,329
Pharmacies billed $24,329 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 275) in 2024. At or below the middle of the specialty; the typical psychiatry clinician is at 0%.
259 generic and 16 brand-name prescriptions · $24,329 in drug cost · 15 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.
| Fluvoxamine Maleate | 13 | $1,173 | $90 |
| Quetiapine | 19 | $307 | $16 |
| Desvenlafaxine Succinate Er | 11 | $256 | $23 |
| Fluoxetine | 31 | $128 | $4 |
| Lorazepam | 27 | $126 | $5 |
See all 7 drugs
| Fluvoxamine Maleate | 13 | $1,173 | $90 |
| Quetiapine | 19 | $307 | $16 |
| Desvenlafaxine Succinate Er | 11 | $256 | $23 |
| Fluoxetine | 31 | $128 | $4 |
| Lorazepam | 27 | $126 | $5 |
| Clonazepam | 24 | $98 | $4 |
| Risperidone | 12 | $42 | $4 |
Year by year
| 2024 | 275 | 20 | 0% (0) | 6% | $24,329 |
| 2023 | 287 | 19 | 0% (0) | 7% | $35,574 |
| 2022 | 234 | 20 | 0% (0) | 8% | $53,996 |
| 2021 | 276 | 16 | 0% (0) | None | $30,486 |
| 2020 | 232 | 18 | 0% (0) | 9% | $40,756 |
| 2019 | 216 | 13 | 0% (0) | 14% | $56,210 |
| 2018 | 311 | 15 | 0% (0) | 12% | $45,942 |
| 2017 | 286 | 14 | 0% (0) | 13% | $31,884 |
| 2016 | 329 | 16 | 0% (0) | 14% | $33,847 |
| 2015 | 443 | 18 | 0% (0) | 15% | $43,812 |
| 2014 | 421 | 18 | 0% (0) | 11% | $40,709 |
| 2013 | 338 | 18 | 0% (0) | 22% | $38,179 |
Part D prescriptions only. A drug prescribed to fewer than 11 people in a year is hidden.
See the drugs prescribed each year
2023: 10 drugs
| Rexulti | 11 | $17,086 | $1,553 |
| Fluvoxamine Maleate | 31 | $2,540 | $82 |
| Lamotrigine | 21 | $558 | $27 |
| Risperidone | 13 | $477 | $37 |
| Sertraline | 20 | $468 | $23 |
| Quetiapine | 11 | $450 | $41 |
| Clonazepam | 28 | $395 | $14 |
| Fluoxetine | 17 | $340 | $20 |
| Haloperidol | 12 | $238 | $20 |
| Lorazepam | 26 | $117 | $4 |
2022: 9 drugs
| Rexulti | 12 | $16,950 | $1,412 |
| Fluvoxamine Maleate Er | 13 | $3,117 | $240 |
| Fluvoxamine Maleate | 24 | $1,753 | $73 |
| Quetiapine | 19 | $546 | $29 |
| Duloxetine | 11 | $456 | $41 |
| Clonazepam | 24 | $281 | $12 |
| Lorazepam | 26 | $250 | $10 |
| Risperidone | 12 | $236 | $20 |
| Sertraline | 18 | $201 | $11 |
2021: 9 drugs
| Quetiapine | 34 | $2,882 | $85 |
| Prazosin | 12 | $389 | $32 |
| Fluoxetine | 32 | $280 | $9 |
| Risperidone | 12 | $216 | $18 |
| Duloxetine | 18 | $155 | $9 |
| Sertraline | 30 | $147 | $5 |
| Lorazepam | 20 | $128 | $6 |
| Citalopram Hbr | 18 | $88 | $5 |
| Clonazepam | 25 | $77 | $3 |
2020: 6 drugs
| Quetiapine | 45 | $872 | $19 |
| Lamotrigine | 16 | $482 | $30 |
| Clonazepam | 31 | $326 | $11 |
| Fluoxetine | 18 | $182 | $10 |
| Sertraline | 20 | $172 | $9 |
| Citalopram Hbr | 14 | $77 | $6 |
2019: 8 drugs
| Saphris | 12 | $15,136 | $1,261 |
| Effexor Xr | 12 | $11,448 | $954 |
| Lamotrigine | 26 | $406 | $16 |
| Quetiapine | 29 | $187 | $6 |
| Benztropine Mesylate | 12 | $95 | $8 |
| Sertraline | 13 | $91 | $7 |
| Fluoxetine | 20 | $84 | $4 |
| Clonazepam | 20 | $60 | $3 |
2018: 13 drugs
| Saphris | 13 | $15,641 | $1,203 |
| Effexor Xr | 12 | $10,903 | $909 |
| Bupropion Xl | 27 | $1,078 | $40 |
| Lamotrigine | 24 | $276 | $12 |
| Quetiapine | 21 | $240 | $11 |
| Sertraline | 20 | $130 | $7 |
| Haloperidol | 14 | $119 | $8 |
| Benztropine Mesylate | 12 | $104 | $9 |
| Ropinirole | 18 | $89 | $5 |
| Risperidone | 12 | $86 | $7 |
| Clonazepam | 23 | $85 | $4 |
| Fluoxetine | 20 | $28 | $1 |
| Lorazepam | 11 | $21 | $2 |
2017: 11 drugs
| Saphris | 12 | $13,132 | $1,094 |
| Effexor Xr | 12 | $9,901 | $825 |
| Bupropion Xl | 20 | $789 | $39 |
| Quetiapine | 39 | $355 | $9 |
| Divalproex | 14 | $262 | $19 |
| Haloperidol | 12 | $130 | $11 |
| Clonazepam | 24 | $112 | $5 |
| Benztropine Mesylate | 12 | $106 | $9 |
| Lamotrigine | 20 | $99 | $5 |
| Ropinirole | 20 | $92 | $5 |
| Sertraline | 11 | $55 | $5 |
2016: 12 drugs
| Saphris | 12 | $11,807 | $984 |
| Seroquel Xr | 14 | $5,889 | $421 |
| Duloxetine | 25 | $1,163 | $47 |
| Divalproex | 25 | $532 | $21 |
| Bupropion Xl | 18 | $530 | $29 |
| Quetiapine | 39 | $460 | $12 |
| Haloperidol | 13 | $442 | $34 |
| Propranolol | 14 | $294 | $21 |
| Lamotrigine | 31 | $226 | $7 |
| Benztropine Mesylate | 12 | $145 | $12 |
| Clonazepam | 25 | $142 | $6 |
| Sertraline | 12 | $42 | $3 |
2015: 16 drugs
| Seroquel Xr | 29 | $10,134 | $349 |
| Effexor Xr | 13 | $7,502 | $577 |
| Adderall Xr | 13 | $5,645 | $434 |
| Duloxetine | 40 | $5,603 | $140 |
| Divalproex | 21 | $1,267 | $60 |
| Bupropion Xl | 34 | $911 | $27 |
| Quetiapine | 46 | $690 | $15 |
| Lamotrigine | 33 | $464 | $14 |
| Mirtazapine | 13 | $261 | $20 |
| Haloperidol | 13 | $215 | $17 |
| Lorazepam | 15 | $211 | $14 |
| Propranolol | 15 | $183 | $12 |
| Benztropine Mesylate | 12 | $151 | $13 |
| Clonazepam | 21 | $146 | $7 |
| Trazodone | 26 | $118 | $5 |
| Olanzapine | 12 | $110 | $9 |
2014: 15 drugs
| Duloxetine | 42 | $11,109 | $265 |
| Abilify | 11 | $8,736 | $794 |
| Seroquel Xr | 15 | $4,973 | $332 |
| Quetiapine | 25 | $2,307 | $92 |
| Bupropion Xl | 48 | $2,012 | $42 |
| Divalproex | 19 | $1,215 | $64 |
| Lamotrigine | 28 | $889 | $32 |
| Citalopram Hbr | 14 | $628 | $45 |
| Propranolol | 13 | $349 | $27 |
| Clonazepam | 22 | $267 | $12 |
| Lorazepam | 25 | $227 | $9 |
| Buspirone | 14 | $175 | $13 |
| Escitalopram | 11 | $158 | $14 |
| Trazodone | 21 | $63 | $3 |
| Metformin | 12 | $43 | $4 |
2013: 16 drugs
| Cymbalta | 42 | $12,778 | $304 |
| Abilify | 18 | $11,140 | $619 |
| Ziprasidone | 12 | $2,583 | $215 |
| Quetiapine | 11 | $2,360 | $215 |
| Bupropion Xl | 32 | $1,576 | $49 |
| Divalproex | 24 | $1,551 | $65 |
| Venlafaxine Hcl Er | 18 | $712 | $40 |
| Lamotrigine | 20 | $623 | $31 |
| Bupropion Hcl Sr | 14 | $283 | $20 |
| Buspirone | 14 | $212 | $15 |
| Lorazepam | 16 | $193 | $12 |
| Propranolol | 11 | $132 | $12 |
| Sertraline | 18 | $111 | $6 |
| Metformin | 12 | $95 | $8 |
| Citalopram Hbr | 12 | $80 | $7 |
| Trazodone | 12 | $30 | $3 |
Money from drug and device companies
$16 in 2025
| 2025 | 1 | 1 | None | $16 |
| 2021 | 1 | 1 | None | $30 |
| 2019 | 1 | 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.
| Supernus Pharmaceuticals | Qelbree | $16 | 1 payment
|
See the published payment
| Supernus Pharmaceuticals | Meals · 2025-02-06 | Qelbree | $16 |
See earlier years (2021, 2019)
2021: $30
| Alkermes | Aristada | $30 | 1 payment
|
2019: $143
| Alkermes | Aristada | $143 | 2 payments
|
Professional record
- NPI
- 1346354990
- Licence
- CA G73257California G73257: Current · expires 2027-11-30
- Trained
- University of Southern California Keck School of Medicine, 1990 · 36 years ago
- Video visits
- Lists video visits
- Gender
- Female
More record details
- Sole proprietor
- No
- Medicaid ID
- CA 00G732570
- Taxonomy
- Psychiatry (2084P0800X); Federal specialty code 2084P0804X (2084P0804X)
- Mailing address
- 3835 N Freeway Blvd Ste 100, Sacramento, CA, 95834
- NPI first listed
- 2006-08-19
- NPI last updated
- 2026-04-29
- NPI record certified
- 2026-04-29
This is when the NPI record was last certified, not a medical board exam.
Extra NPI addresses: 1712 Picasso Ave, Davis, CA, 95618