A missing listing does not mean out of network. Directories change, and a listing does not cover every office. Call Dr. Chan’s office at (408) 295-3433 to confirm they take your plan. Ask about the office you use, its medical group, referrals and appointments.
15 of 15 plans
Plans whose provider directory lists this clinician
This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.
Largest Original Medicare bills
Short return visit (20+ min)
17
$1,458
$86
New patient visit (30+ min)
11
$1,159
$105
Who their Medicare patients are
43 Original Medicare patients in 2024. Average age 76 · Women 61% · Health risk score 0.79. At or below the middle of the specialty; the typical optometry clinician is at 0.97.
Conditions among them: High blood pressure 75% · Coronary heart disease 42% · Diabetes 35%.
The office billed $8,555, Medicare allowed $6,686 and paid $5,053; for 50 services of 6 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
Original Medicare by year
2024
43
50
76
0.79
$8,555
$5,053
2023
68
173
77
1.16
$30,708
$9,512
2022
52
105
74
1.02
$19,470
$5,307
2021
75
150
75
1.08
$26,070
$7,518
2020
24
41
74
0.96
$5,230
$2,238
2019
45
102
71
1.24
$16,395
$7,639
2018
42
92
73
1.02
$10,990
$4,694
2017
37
75
72
1.58
$9,760
$3,761
2016
71
171
73
1.23
$21,230
$9,328
2015
75
218
73
1.05
$23,270
$10,715
2014
55
144
72
1.33
$15,155
$7,491
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
Original Medicare services billed in 2023
Short return visit (20+ min)
45
$4,588
$78
Short return visit
21
$1,542
$55
Photography of the retina
38
$1,275
$31
Imaging of retina
11
$425
$39
2022: 4 services
Original Medicare services billed in 2022
Short return visit (20+ min)
25
$1,349
$52
Short return visit
11
$764
$51
Photography of the retina
21
$752
$36
Imaging of retina
12
$274
$23
2021: 4 services
Original Medicare services billed in 2021
Short return visit (20+ min)
47
$4,135
$65
New patient visit (30+ min)
18
$1,081
$60
Imaging of retina
28
$829
$27
Short return visit
13
$773
$43
2020: 1 service
Original Medicare services billed in 2020
Established patient complete exam of visual system
15
$1,218
$81
2019: 3 services
Original Medicare services billed in 2019
Established patient complete exam of visual system
23
$2,312
$80
Short return visit
13
$704
$31
Imaging of retina
16
$524
$29
2018: 3 services
Original Medicare services billed in 2018
Established patient complete exam of visual system
28
$2,517
$74
Short return visit
11
$770
$30
Imaging of retina
15
$554
$31
2017: 2 services
Original Medicare services billed in 2017
Established patient complete exam of visual system
20
$1,521
$63
Imaging of retina
15
$471
$28
2016: 4 services
Original Medicare services billed in 2016
Established patient complete exam of visual system
34
$3,146
$75
New patient complete exam of visual system
29
$2,693
$93
Imaging of retina
23
$973
$34
Short return visit
18
$853
$34
2015: 6 services
Original Medicare services billed in 2015
New patient complete exam of visual system
39
$3,558
$91
Established patient complete exam of visual system
29
$2,377
$79
Imaging of retina
31
$1,100
$34
Microfluid analysis of tears
23
$1,079
$22
Short return visit
15
$917
$34
Imaging of optic nerve
12
$382
$32
2014: 4 services
Original Medicare services billed in 2014
Established patient complete exam of visual system
27
$2,550
$94
New patient complete exam of visual system
25
$2,394
$96
Microfluid analysis of tears
17
$972
$22
Imaging of retina
18
$647
$36
Medicaid work
$522 in 2022
Medicaid paid $522 for 30 billed services this clinician did in 2022, up to 17 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.
Largest Medicaid services in 2022
DETERMINATION REFRACTIVE STATE
30
$522
Medicaid work by year
2022
30
1
17
$522
2021
34
1
19
$609
2020
14
1
12
$203
2019
13
1
13
$192
See the largest Medicaid services in earlier years
2021
Largest Medicaid services in 2021
DETERMINATION REFRACTIVE STATE
34
$609
2020
Largest Medicaid services in 2020
DETERMINATION REFRACTIVE STATE
14
$203
2019
Largest Medicaid services in 2019
DETERMINATION REFRACTIVE STATE
13
$192
Money from drug and device companies
$418 in 2025
Industry payments by year
2025
8
12
—None
$418
2024
7
15
$986
$1,601
2023
2
3
—None
$365
2022
2
2
—None
$45
Paid work is consulting, speaking, honoraria and royalties, as opposed to meals and travel.