Mona Liu, MD
Allergy/Immunology · Fremont
- Medicare standing
- Clear
- Enrolled, allowed to bill and order, not excluded
- Plans that list them
- 10
- 2 carriers
- Office
- 1
Offices
1 location · Sutter Bay Medical Foundation · 3,783 clinicians in this group
Plans that list them
10 plans · 2 carriers
A missing listing does not mean out of network. Directories change, and a listing does not cover every office. Call Dr. Liu’s office at (510) 490-1222 to confirm they take your plan. Ask about the office you use, its medical group, referrals and appointments.
10 of 10 plans
| 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 |
| SCAN Strive (HMO C-SNP) | SCAN Health Plan | Listed | Oct 3, 2026 |
California Medical Board record
Licence A146471 · Current
Licensed to practise in California · since 2016 · expires 2026-11-30 · University of Pittsburgh School of Medicine.
No disciplinary actions, convictions, malpractice judgments or citations in this record.
Original Medicare doctor bills
$141,174
Medicare paid this office $141,174 for 98 people.
This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.
| Injection, omalizumab, 5 mg | 15 | $120,730 | None |
| Return visit (30+ min) | 31 | $3,197 | $86 |
| Short return visit (20+ min) | 34 | $2,844 | $69 |
| New patient visit (45+ min) | 14 | $1,919 | $137 |
| Injection of drug or substance under skin or into muscle | 20 | $1,902 | $10 |
See all 6 services
| Injection, omalizumab, 5 mg | 15 | $120,730 | None |
| Return visit (30+ min) | 31 | $3,197 | $86 |
| Short return visit (20+ min) | 34 | $2,844 | $69 |
| New patient visit (45+ min) | 14 | $1,919 | $137 |
| Injection of drug or substance under skin or into muscle | 20 | $1,902 | $10 |
| Professional service for multiple injections of allergen | 20 | $973 | $10 |
Who their Medicare patients are
98 Original Medicare patients in 2024. Average age 71 · Women 68% · Health risk score 1.07. Above the middle of the specialty; the typical allergy/ immunology clinician is at 1.
Conditions among them: High blood pressure 69% · Diabetes 39% · Coronary heart disease 26% · Depression 20% · Chronic kidney disease 15% · COPD 15% · Cancer 13% · Atrial fibrillation 13% · Stroke 13%.
The office billed $563,004, Medicare allowed $179,020 and paid $141,174; for 5,193 services of 13 kinds; $127,888 of it was for drugs given in the office and $13,286 for care.
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 | 98 | 5,193 | 71 | 1.07 | $563,004 | $141,174 |
| 2023 | 126 | 8,652 | 72 | 1.02 | $879,377 | $231,638 |
| 2022 | 97 | 2,897 | 73 | 0.98 | $295,397 | $79,038 |
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: 8 services
| Injection, omalizumab, 5 mg | 18 | $197,267 | None |
| Return visit (30+ min) | 39 | $5,596 | $95 |
| Short return visit (20+ min) | 51 | $4,338 | $62 |
| Test for allergy using allergenic extract | 16 | $2,342 | $3 |
| New patient visit (45+ min) | 13 | $1,714 | $132 |
| Injection of drug or substance under skin or into muscle | 22 | $1,578 | $11 |
| Professional service for multiple injections of allergen | 34 | $1,535 | $9 |
| New patient visit (30+ min) | 17 | $1,206 | $71 |
2022: 6 services
| Injection, omalizumab, 5 mg | 22 | $70,460 | None |
| Return visit (30+ min) | 14 | $1,444 | $96 |
| Short return visit (20+ min) | 15 | $1,275 | $71 |
| New patient visit (30+ min) | 12 | $1,032 | $86 |
| Professional service for multiple injections of allergen | 42 | $786 | $9 |
| Injection of drug or substance under skin or into muscle | 25 | $564 | $12 |
Medicaid work
$24,650 in 2024
Medicaid paid $24,650 for 541 billed services this clinician did in 2024, up to 27 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.
| Percutaneous tests (scratch, puncture, prick) with allergenic extracts, immediate type reaction, including test interpretation and report, specify number of tests | 88 | $11,659 |
| New patient visit (45+ min) | 54 | $4,690 |
| Return visit (30+ min) | 47 | $4,636 |
| Professional services for allergen immunotherapy not including provision of allergenic extracts; 2 or more injections | 338 | $3,044 |
| Short return visit (20+ min) | 14 | $621 |
| 2024 | 541 | 5 | 27 | $24,650 |
| 2023 | 677 | 7 | 33 | $23,516 |
| 2022 | 334 | 4 | 34 | $6,595 |
See the largest Medicaid services in earlier years
2023
| Percutaneous tests (scratch, puncture, prick) with allergenic extracts, immediate type reaction, including test interpretation and report, specify number of tests | 47 | $7,477 |
| Professional services for allergen immunotherapy not including provision of allergenic extracts; 2 or more injections | 460 | $3,771 |
| Return visit (30+ min) | 38 | $3,368 |
| Short return visit (20+ min) | 75 | $3,212 |
| New patient visit (45+ min) | 16 | $2,600 |
| New patient visit (30+ min) | 27 | $2,595 |
| Therapeutic, prophylactic, or diagnostic injection (specify substance or drug); subcutaneous or intramuscular | 14 | $495 |
2022
| Percutaneous tests (scratch, puncture, prick) with allergenic extracts, immediate type reaction, including test interpretation and report, specify number of tests | 43 | $3,175 |
| New patient visit (45+ min) | 30 | $1,977 |
| Professional services for allergen immunotherapy not including provision of allergenic extracts; 2 or more injections | 223 | $1,062 |
| Therapeutic, prophylactic, or diagnostic injection (specify substance or drug); subcutaneous or intramuscular | 38 | $381 |
Drugs they prescribed that Part D paid
$350,705
Pharmacies billed $350,705 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 616) in 2024. At or below the middle of the specialty; the typical allergy/ immunology clinician is at 0%.
435 generic and 181 brand-name prescriptions · $350,705 in drug cost · 11 antibiotic prescriptions.
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.
| Dupixent | 25 | $155,870 | $6,235 |
| Hyqvia | 22 | $54,510 | $2,478 |
| Dupixent | 11 | $48,612 | $4,419 |
| Trelegy Ellipta | 17 | $21,065 | $1,239 |
| Azelastine | 161 | $6,294 | $39 |
See all 13 drugs
| Dupixent | 25 | $155,870 | $6,235 |
| Hyqvia | 22 | $54,510 | $2,478 |
| Dupixent | 11 | $48,612 | $4,419 |
| Trelegy Ellipta | 17 | $21,065 | $1,239 |
| Azelastine | 161 | $6,294 | $39 |
| Symbicort | 27 | $6,020 | $223 |
| Fluticasone Propionate | 72 | $1,344 | $19 |
| Albuterol Sulfate Hfa | 49 | $1,096 | $22 |
| Ipratropium | 56 | $479 | $9 |
| Famotidine | 26 | $252 | $10 |
| Triamcinolone Acetonide | 11 | $125 | $11 |
| Omeprazole | 12 | $87 | $7 |
| Prednisone | 15 | $45 | $3 |
Year by year
| 2024 | 616 | 171 | 0% (0) | 29% | $350,705 |
| 2023 | 621 | 163 | 0% (0) | 29% | $269,028 |
| 2022 | 221 | 111 | 0% (0) | 23% | $45,636 |
| 2021 | 124 | 46 | 0% (0) | 31% | $32,645 |
Part D prescriptions only. A drug prescribed to fewer than 11 people in a year is hidden.
See the drugs prescribed each year
2023: 17 drugs
| Dupixent | 33 | $141,087 | $4,275 |
| Hyqvia | 14 | $36,726 | $2,623 |
| Trelegy Ellipta | 18 | $15,227 | $846 |
| Flovent Hfa | 20 | $7,506 | $375 |
| Spiriva Respimat | 13 | $7,149 | $550 |
| Azelastine | 151 | $6,210 | $41 |
| Symbicort | 11 | $4,606 | $419 |
| Epinephrine | 11 | $1,841 | $167 |
| Albuterol Sulfate Hfa | 44 | $1,183 | $27 |
| Fluticasone Propionate | 66 | $1,167 | $18 |
| Ipratropium | 27 | $984 | $36 |
| Montelukast | 32 | $508 | $16 |
| Doxepin | 16 | $209 | $13 |
| Omeprazole | 11 | $170 | $15 |
| Hydrocortisone | 12 | $115 | $10 |
| Triamcinolone Acetonide | 17 | $102 | $6 |
| Hydroxyzine | 12 | $81 | $7 |
2022: 5 drugs
| Azelastine | 57 | $1,801 | $32 |
| Ipratropium | 23 | $1,233 | $54 |
| Albuterol Sulfate Hfa | 20 | $615 | $31 |
| Fluticasone Propionate | 29 | $449 | $15 |
| Olopatadine | 11 | $252 | $23 |
2021: 3 drugs
| Spiriva Respimat | 12 | $4,764 | $397 |
| Azelastine | 25 | $452 | $18 |
| Fluticasone Propionate | 14 | $191 | $14 |
Money from drug and device companies
$594 in 2025
| 2025 | 6 | 14 | None | $594 |
| 2024 | 5 | 9 | None | $639 |
| 2023 | 5 | 11 | None | $1,025 |
| 2022 | 2 | 3 | $175 | $297 |
| 2021 | 1 | 1 | None | $13 |
| 2020 | 2 | 2 | None | $45 |
| 2019 | 2 | 2 | None | $141 |
Paid work is consulting, speaking, honoraria and royalties, as opposed to meals and travel.
A payment is not proof that care is biased.
| GlaxoSmithKline | Nucala | $143 | 5 payments
|
| Optinose US | Xhance | $126 | 1 payment
|
| Regeneron Healthcare Solutions | Dupixent | $104 | 1 payment
|
| Stryker | Scopis Ent | $79 | 1 payment
|
| Genzyme | Dupixent | $79 | 3 payments
|
| AstraZeneca Pharmaceuticals LP | Fasenra | $63 | 3 payments
|
See all 14 published payments
| AstraZeneca Pharmaceuticals LP | Meals · 2025-12-03 | Tezspire | $28 |
| GlaxoSmithKline | Meals · 2025-11-04 | Nucala | $27 |
| Stryker | Meals · 2025-10-03 | Scopis Ent | $79 |
| Genzyme | Meals · 2025-09-23 | Dupixent | $32 |
| AstraZeneca Pharmaceuticals LP | Meals · 2025-09-12 | Fasenra | $16 |
| GlaxoSmithKline | Meals · 2025-09-09 | Nucala | $33 |
| Regeneron Healthcare Solutions | Meals · 2025-08-09 | Dupixent | $104 |
| AstraZeneca Pharmaceuticals LP | Meals · 2025-07-25 | Fasenra | $19 |
| GlaxoSmithKline | Meals · 2025-06-16 | Nucala | $28 |
| Genzyme | Meals · 2025-06-03 | Dupixent | $33 |
| Optinose US | Meals · 2025-05-23 | Xhance | $126 |
| GlaxoSmithKline | Meals · 2025-03-26 | Nucala | $29 |
| Genzyme | Meals · 2025-01-21 | Dupixent | $14 |
| GlaxoSmithKline | Meals · 2025-01-15 | Nucala | $25 |
See earlier years (2024, 2023, 2022, 2021, 2020, 2019)
2024: $639
| Medtronic | Aquamantys(Tm) | $243 | 2 payments
|
| Regeneron Healthcare Solutions | Dupixent | $154 | 2 payments
|
| Regeneron Pharmaceuticals | Dupixent | $127 | 1 payment
|
| GlaxoSmithKline | Nucala | $80 | 3 payments
|
| Genzyme | Dupixent | $36 | 1 payment
|
2023: $1,025
| Medtronic | Stealthstation S8 Platform | $305 | 3 payments
|
| Regeneron Healthcare Solutions | Dupixent | $274 | 3 payments
|
| GlaxoSmithKline | Nucala | $164 | 3 payments
|
| Abbvie | None | $144 | 1 payment
|
| Regeneron Pharmaceuticals | Dupixent | $138 | 1 payment
|
2022: $297
| Aimmune Therapeutics | Palforzia | $175 | 1 payment
|
| OptiNose US | Xhance | $122 | 2 payments
|
2021: $13
| Horizon Therapeutics plc | Actimmune | $13 | 1 payment
|
2020: $45
| Takeda Pharmaceuticals U.S.A. | Vpriv | $23 | 1 payment
|
| Jubilant HollisterStier | None | $22 | 1 payment
|
2019: $141
| Genzyme | Dupixent | $123 | 1 payment
|
| Shire North American Group | Gammagard | $17 | 1 payment
|
Checkups this office reported
Medicare did not publish checkup rates for this clinician.
- Medicare’s overall office score
- 83.0 / 100
- Scores the office’s reporting and systems. It is not a grade for how the doctor treats you.
Professional record
- NPI
- 1043755754
- Licence
- CA A146471California A146471: Current · expires 2026-11-30
- Trained
- University of Pittsburgh School of Medicine, 2015
- Video visits
- Lists video visits
- Gender
- Female
More record details
- Sole proprietor
- No
- Taxonomy
- Federal specialty code 207K00000X (207K00000X); Pediatrics (208000000X)
- Mailing address
- 270 International Cir, San Jose, CA, 95119
- NPI first listed
- 2017-01-04
- NPI last updated
- 2021-12-20
- NPI record certified
- 2020-12-04
This is when the NPI record was last certified, not a medical board exam.
This office lists an electronic records connection.