Lillian Yao Chang, PA
Physician Assistant · Mountain View
- 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 Lillian Yao Chang’s office to ask if they take your plan before you enroll.
California Medical Board record
Licence G59816 · Current
Licensed to practise in California · since 1987 · expires 2027-03-31 · New York University School of Medicine.
Matched on the licence number without its letter prefix; check the name before relying on it.
No disciplinary actions, convictions, malpractice judgments or citations in this record.
Original Medicare doctor bills
$5,675
Medicare paid this office $5,675 for 70 people.
This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.
| Short return visit (20+ min) | 41 | $2,345 | $56 |
| New patient visit (30+ min) | 13 | $807 | $62 |
Who their Medicare patients are
70 Original Medicare patients in 2024. Average age 78 · Women 70% · Health risk score 0.99. At or below the middle of the specialty; the typical physician assistant clinician is at 1.31.
Conditions among them: High blood pressure 53% · Chronic kidney disease 20% · Diabetes 19% · Depression 19% · Coronary heart disease 16%.
The office billed $23,448, Medicare allowed $8,330 and paid $5,675; for 82 services of 12 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 | 70 | 82 | 78 | 0.99 | $23,448 | $5,675 |
| 2023 | 120 | 159 | 75 | 0.88 | $44,787 | $13,116 |
| 2022 | 88 | 121 | 76 | 0.85 | $29,785 | $10,402 |
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: 5 services
| Return visit (30+ min) | 32 | $2,960 | $92 |
| Short return visit (20+ min) | 45 | $2,653 | $55 |
| New patient visit (30+ min) | 25 | $1,923 | $77 |
| Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 13 | $1,723 | $133 |
| New patient visit (45+ min) | 11 | $1,149 | $104 |
2022: 2 services
| Short return visit (20+ min) | 47 | $3,414 | $70 |
| Return visit (30+ min) | 26 | $3,298 | $106 |
Professional record
- NPI
- 1922630433
- Licence
- CA 59816California G59816: Current · expires 2027-03-31
- Video visits
- Lists video visits
- Gender
- Female
More record details
- Sole proprietor
- No
- Taxonomy
- Physician assistant (363A00000X); Student in a training program (390200000X)
- Mailing address
- 701 E El Camino Real, Mountain View, CA, 94040
- NPI first listed
- 2020-02-12
- NPI last updated
- 2023-10-12
- NPI record certified
- 2023-10-12
This is when the NPI record was last certified, not a medical board exam.