Kelvin Chang, PA
Physician Assistant · San Carlos
- Medicare standing
- Clear
- Enrolled, allowed to bill and order, not excluded
- Plans that list them
- Not verified
- Not the same as out of network.
- Offices
- 2
Offices
2 locations · Sutter Bay Medical Foundation · 3,783 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 Kelvin Chang’s office to ask if they take your plan before you enroll.
Original Medicare doctor bills
$70,868
Medicare paid this office $70,868 for 497 people.
This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.
| Return visit (30+ min) | 486 | $62,060 | $95 |
| Short return visit (20+ min) | 19 | $4,528 | $72 |
| Long return visit (40+ min) | 14 | $4,280 | $143 |
Who their Medicare patients are
497 Original Medicare patients in 2024. Average age 75 · Under 65 2% · 85 and older 11% · Women 52% · Also on Medicaid 3% · Health risk score 0.93. At or below the middle of the specialty; the typical physician assistant clinician is at 1.31.
Conditions among them: High blood pressure 68% · Coronary heart disease 27% · Diabetes 24% · Atrial fibrillation 21% · Chronic kidney disease 17% · Cancer 17% · Depression 17% · Heart failure 9% · COPD 8% · Dementia 4% · Stroke 3%.
The office billed $278,190, Medicare allowed $96,011 and paid $70,868; for 744 services of 3 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 | 497 | 744 | 75 | 0.93 | $278,190 | $70,868 |
| 2023 | 57 | 60 | 76 | 0.87 | $16,663 | $4,342 |
| 2022 | 202 | 236 | 72 | 0.83 | $27,459 | $10,717 |
| 2021 | 262 | 278 | 74 | 1.05 | $20,652 | $12,257 |
| 2020 | 107 | 110 | 70 | 0.66 | $9,432 | $5,571 |
| 2019 | 52 | 53 | 71 | 0.62 | $4,812 | $2,896 |
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: 2 services
| Return visit (30+ min) | 22 | $2,193 | $100 |
| Short return visit (20+ min) | 31 | $1,714 | $55 |
2022: 7 services
| Short return visit (20+ min) | 62 | $3,998 | $63 |
| Influenza vaccine, quadrivalent inactivated, 0.5 ml dosage | 22 | $1,546 | $70 |
| Intramuscular administration of single severe acute respiratory syndrome coronavirus 2 (covid-19) vaccine, mrna-lnp, spike protein, preservative free, 50 mcg/0.25ml dosage, booster dose | 21 | $904 | $43 |
| Office for the evaluation and management of established patient that may not require presence of healthcare professional | 46 | $886 | $19 |
| Administration of influenza virus vaccine | 24 | $751 | $31 |
| Intramuscular administration of single severe acute respiratory syndrome coronavirus 2 (covid-19) vaccine, mrna-lnp, spike protein, preservative free, 30 mcg/0.3ml dosage, diluent reconstituted; first dose | 12 | $518 | $43 |
| Intramuscular administration of single severe acute respiratory syndrome coronavirus 2 (covid-19) vaccine, mrna-lnp, spike protein, preservative free, 30 mcg/0.3ml dosage, diluent reconstituted; second dose | 11 | $474 | $43 |
2021: 7 services
| Influenza vaccine split virus, preservative free | 44 | $2,871 | $65 |
| Intramuscular administration of single severe acute respiratory syndrome coronavirus 2 (covid-19) vaccine, mrna-lnp, spike protein, preservative free, 50 mcg/0.25ml dosage, booster dose | 53 | $2,225 | $42 |
| Short return visit (20+ min) | 32 | $1,953 | $61 |
| Intramuscular administration of single severe acute respiratory syndrome coronavirus 2 (covid-19) vaccine, mrna-lnp, spike protein, preservative free, 100 mcg/0.5ml dosage; third dose | 45 | $1,882 | $42 |
| Office for the evaluation and management of established patient that may not require presence of healthcare professional | 43 | $955 | $22 |
| Intramuscular administration of single severe acute respiratory syndrome coronavirus 2 (covid-19) vaccine, mrna-lnp, spike protein, preservative free, 30 mcg/0.3ml dosage, diluent reconstituted; first dose | 14 | $601 | $43 |
| Intramuscular administration of single severe acute respiratory syndrome coronavirus 2 (covid-19) vaccine, mrna-lnp, spike protein, preservative free, 100 mcg/0.5ml dosage; second dose | 16 | $519 | $32 |
2020: 2 services
| Influenza vaccine split virus, preservative free | 59 | $3,598 | $61 |
| Short return visit (20+ min) | 33 | $861 | $26 |
2019: 2 services
| Short return visit (20+ min) | 21 | $1,304 | $59 |
| Influenza vaccine split virus, preservative free | 23 | $1,127 | $49 |
Drugs they prescribed that Part D paid
$875
Pharmacies billed $875 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 45) in 2024. Too few prescriptions to compare fairly with other clinicians.
45 generic and 0 brand-name prescriptions · $875 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.
| Gabapentin | 21 | $238 | $11 |
Year by year
| 2024 | 45 | 15 | 0% (0) | 0% | $875 |
| 2023 | 25 | 21 | 0% (0) | None | $312 |
| 2022 | 48 | 42 | 0% (0) | None | $656 |
| 2021 | 24 | 22 | 0% (0) | None | $398 |
| 2020 | 41 | 31 | 0% (0) | 27% | $933 |
| 2019 | 141 | 76 | None | None | $2,073 |
| 2018 | 29 | 22 | 0% (0) | None | $295 |
Part D prescriptions only. A drug prescribed to fewer than 11 people in a year is hidden.
See the drugs prescribed each year
2019: 2 drugs
| Amoxicillin-Clavulanate Potass | 19 | $194 | $10 |
| Azithromycin | 11 | $79 | $7 |
Money from drug and device companies
$1,287 in 2025
| 2025 | 1 | 8 | None | $1,287 |
| 2023 | 4 | 4 | None | $364 |
| 2022 | 1 | 1 | None | $125 |
| 2021 | 2 | 2 | None | $126 |
Paid work is consulting, speaking, honoraria and royalties, as opposed to meals and travel.
A payment is not proof that care is biased.
| Inspire Medical Systems | Inspire | $1,287 | 8 payments
|
See all 8 published payments
| Inspire Medical Systems | Travel · 2025-10-07 | Inspire | $106 |
| Inspire Medical Systems | Meals · 2025-10-03 | Inspire | $80 |
| Inspire Medical Systems | Meals · 2025-10-03 | Inspire | $73 |
| Inspire Medical Systems | Meals · 2025-10-03 | Inspire | $56 |
| Inspire Medical Systems | Travel · 2025-10-03 | Inspire | $38 |
| Inspire Medical Systems | Meals · 2025-10-02 | Inspire | $143 |
| Inspire Medical Systems | Travel · 2025-10-02 | Inspire | $324 |
| Inspire Medical Systems | Travel · 2025-07-23 | Inspire | $467 |
See earlier years (2023, 2022, 2021)
2023: $364
| Amylyx Pharmaceuticals | Relyvrio | $114 | 1 payment
|
| Gilead Sciences | Epclusa | $108 | 1 payment
|
| Eisai | None | $106 | 1 payment
|
| Genzyme | Fabrazyme | $35 | 1 payment
|
2022: $125
| Abbvie | None | $125 | 1 payment
|
2021: $126
| Amgen | None | $99 | 1 payment
|
| VYNE Pharmaceuticals | Amzeeq | $27 | 1 payment
|
Professional record
- NPI
- 1376019869
- Licence
- CA PA56171
- Trained
- University of California, Davis School of Medicine, 2018
- Video visits
- Lists video visits
- Gender
- Male
More record details
- Sole proprietor
- Yes
- Taxonomy
- Physician assistant (363A00000X)
- Mailing address
- 325 Distel Cir, Los Altos, CA, 94022
- NPI first listed
- 2018-10-23
- NPI last updated
- 2020-06-03
- NPI record certified
- 2020-06-03
This is when the NPI record was last certified, not a medical board exam.
Extra NPI addresses: 1680 E Capitol Expy Ste 10, San Jose, CA, 95121