A missing listing does not mean out of network. Directories change, and a listing does not cover every office. Call Dr. Chou’s office at (415) 426-7771 to confirm they take your plan. Ask about the office you use, its medical group, referrals and appointments.
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)
219
$39,431
$82
Testing of autonomic (sympathetic) nervous system function
60
$7,634
$125
Removal of noncancer thickened skin growth, 2-4 growths
41
$6,397
$84
Ultrasound study of arm and leg arteries
65
$5,727
$88
Removal of fingernails or toenails, 6 or more nails
51
$4,176
$43
See all 10 services
Every Original Medicare service billed
Short return visit (20+ min)
219
$39,431
$82
Testing of autonomic (sympathetic) nervous system function
60
$7,634
$125
Removal of noncancer thickened skin growth, 2-4 growths
41
$6,397
$84
Ultrasound study of arm and leg arteries
65
$5,727
$88
Removal of fingernails or toenails, 6 or more nails
51
$4,176
$43
Return visit (30+ min)
30
$4,169
$123
Removal of fingernails or toenails, 1-5 nails
65
$4,056
$32
Removal of noncancer thickened skin growth, 1 growth
31
$3,138
$73
New patient visit (30+ min)
29
$2,748
$95
X-ray of foot, minimum of 3 views
34
$1,809
$35
Procedures Medicare counted
Procedure volume Medicare published
Removal of nail tissue
521
More than 84% of doctors who do this
Removal of skin lesions
1-10
—None
Removal of tissue
95
More than 85% of doctors who do this
Removal or shaving of skin growth
351
More than 94% of doctors who do this
Procedures year by year
Procedures billed to Original Medicare by year
Procedure
2019
2020
2021
2022
2023
2024
Removal of fingernails or toenails, 1-5 nails
150
170
221
208
193
127
Removal of fingernails or toenails, 6 or more nails
230
127
132
145
128
97
Removal of noncancer thickened skin growth, 2-4 growths
157
87
142
137
123
76
Removal of noncancer thickened skin growth, 1 growth
95
62
59
73
58
43
Removal of skin and tissue, 20.0 sq cm or less
31
68
38
–
45
–
Removal of noncancer thickened skin growth, more than 4 growths
–
27
27
18
17
–
Times billed to Original Medicare each year. A blank year means fewer than 11 people had it, or none: Medicare does not publish smaller counts. Medicare Advantage patients are not included.
Who their Medicare patients are
236 Original Medicare patients in 2024. Average age 78 · Women 61% · Also on Medicaid 7% · Health risk score 1.37. At or below the middle of the specialty; the typical podiatry clinician is at 1.55.
The office billed $206,035, Medicare allowed $117,292 and paid $89,678; for 1,164 services of 30 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
236
1,164
78
1.37
$206,035
$89,678
2023
369
1,786
77
1.22
$318,205
$134,803
2022
332
1,816
77
1.12
$291,138
$122,478
2021
317
1,708
76
1.28
$255,331
$112,483
2020
292
1,471
76
1.44
$227,458
$88,693
2019
361
1,829
75
1.33
$285,240
$104,949
2018
335
1,766
76
1.41
$303,918
$110,260
2017
142
648
78
1.35
$70,154
$41,111
2016
65
438
81
1.35
$43,789
$25,067
2015
73
597
81
1.76
$77,831
$37,810
2014
60
478
83
1.79
$72,805
$29,294
2013
44
343
78
2.25
$54,265
$24,070
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: 14 services
Original Medicare services billed in 2023
Short return visit (20+ min)
283
$54,770
$82
New patient visit (30+ min)
147
$14,514
$99
Testing of autonomic (sympathetic) nervous system function
104
$12,865
$121
Removal of noncancer thickened skin growth, 2-4 growths
63
$9,857
$80
Ultrasound study of arm and leg arteries
109
$9,571
$86
Removal of fingernails or toenails, 1-5 nails
91
$6,162
$32
Removal of skin and tissue, 20.0 sq cm or less
15
$5,793
$129
Removal of fingernails or toenails, 6 or more nails
63
$5,496
$43
Removal of noncancer thickened skin growth, 1 growth
41
$4,227
$73
X-ray of foot, minimum of 3 views
53
$2,366
$35
Removal of noncancer thickened skin growth, more than 4 growths
12
$1,315
$77
Short return visit
13
$871
$54
Trimming of dystrophic nails, any number
22
$444
$20
Placement of strapping to toes
13
$193
$15
2022: 11 services
Original Medicare services billed in 2022
Short return visit (20+ min)
268
$54,070
$80
New patient visit (30+ min)
125
$11,268
$90
Removal of noncancer thickened skin growth, 2-4 growths
67
$10,635
$78
Testing of autonomic (sympathetic) nervous system function
52
$6,668
$128
Removal of fingernails or toenails, 1-5 nails
92
$6,323
$30
Removal of fingernails or toenails, 6 or more nails
72
$5,884
$41
Removal of noncancer thickened skin growth, 1 growth
51
$5,110
$70
Ultrasound study of arm and leg arteries
54
$4,712
$86
Trimming of dystrophic nails, any number
60
$2,994
$20
X-ray of foot, minimum of 3 views
39
$1,749
$33
Removal of noncancer thickened skin growth, more than 4 growths
12
$1,577
$88
2021: 11 services
Original Medicare services billed in 2021
Short return visit (20+ min)
235
$52,476
$82
New patient visit (30+ min)
136
$12,826
$94
Removal of noncancer thickened skin growth, 2-4 growths
60
$10,971
$77
Removal of fingernails or toenails, 1-5 nails
95
$7,043
$32
Removal of fingernails or toenails, 6 or more nails
60
$5,476
$41
Removal of skin and tissue, 20.0 sq cm or less
12
$4,919
$129
Removal of noncancer thickened skin growth, 1 growth
44
$4,192
$71
Trimming of dystrophic nails, any number
57
$3,078
$21
X-ray of foot, minimum of 3 views
58
$2,636
$35
Removal of noncancer thickened skin growth, more than 4 growths
13
$2,200
$81
Short return visit
12
$706
$54
2020: 11 services
Original Medicare services billed in 2020
Short return visit (20+ min)
220
$36,664
$67
New patient visit (30+ min)
105
$10,014
$95
Removal of skin and tissue, 20.0 sq cm or less
16
$8,401
$124
Removal of noncancer thickened skin growth, 2-4 growths
51
$6,159
$71
Removal of fingernails or toenails, 6 or more nails
75
$5,356
$42
Removal of fingernails or toenails, 1-5 nails
93
$5,167
$30
Removal of noncancer thickened skin growth, 1 growth
46
$3,522
$57
X-ray of foot, minimum of 3 views
60
$2,734
$32
Removal of noncancer thickened skin growth, more than 4 growths
14
$1,975
$73
Trimming of dystrophic nails, any number
48
$1,782
$19
Office for the evaluation and management of established patient that may not require presence of healthcare professional
18
$465
$19
2019: 10 services
Original Medicare services billed in 2019
Short return visit (20+ min)
267
$46,914
$63
New patient visit (30+ min)
151
$13,927
$92
Removal of noncancer thickened skin growth, 2-4 growths
78
$9,447
$60
Removal of fingernails or toenails, 6 or more nails
119
$9,330
$41
Removal of noncancer thickened skin growth, 1 growth
62
$4,892
$51
Removal of fingernails or toenails, 1-5 nails
87
$4,798
$32
Removal of skin and tissue, 20.0 sq cm or less
12
$3,071
$99
X-ray of foot, minimum of 3 views
68
$2,386
$28
Short return visit
27
$1,415
$40
Trimming of dystrophic nails, any number
37
$1,320
$22
2018: 13 services
Original Medicare services billed in 2018
Short return visit (20+ min)
218
$41,938
$65
New patient visit (45+ min)
96
$12,652
$132
Removal of fingernails or toenails, 6 or more nails
134
$12,521
$39
New patient visit (30+ min)
144
$11,930
$83
Removal of noncancer thickened skin growth, 2-4 growths
70
$8,922
$56
Removal of skin and tissue, 20.0 sq cm or less
16
$5,884
$113
Removal of noncancer thickened skin growth, 1 growth
52
$3,419
$46
X-ray of foot, minimum of 3 views
49
$2,053
$28
Removal of fingernails or toenails, 1-5 nails
34
$1,652
$31
Return visit (30+ min)
14
$1,262
$90
Short return visit
24
$1,175
$42
Trimming of fingernails or toenails
21
$416
$13
Trimming of dystrophic nails, any number
14
$296
$13
2017: 7 services
Original Medicare services billed in 2017
Short return visit (20+ min)
69
$12,343
$62
Removal of fingernails or toenails, 6 or more nails
87
$7,849
$40
New patient visit (45+ min)
48
$6,266
$131
New patient visit (30+ min)
53
$5,129
$97
Removal of noncancer thickened skin growth, 2-4 growths
27
$2,882
$54
Removal of noncancer thickened skin growth, 1 growth
13
$693
$43
X-ray of foot, minimum of 3 views
15
$678
$28
2016: 8 services
Original Medicare services billed in 2016
Short return visit (20+ min)
47
$6,960
$62
Removal of fingernails or toenails, 6 or more nails
45
$5,230
$37
Removal of noncancer thickened skin growth, 2-4 growths
11
$1,877
$51
New patient visit (45+ min)
12
$1,742
$145
New patient visit (30+ min)
16
$1,372
$86
Short return visit
20
$1,203
$34
Removal of noncancer thickened skin growth, 1 growth
15
$839
$47
X-ray of foot, minimum of 3 views
11
$435
$27
2015: 8 services
Original Medicare services billed in 2015
Removal of fingernails or toenails, 6 or more nails
52
$7,111
$40
Short return visit (20+ min)
34
$5,419
$65
Residence visit for established patient with low level of medical decision making, per day at least 30 minutes
15
$4,773
$71
Residence visit for established patient with straightforward medical decision making, per day at least 15 minutes
15
$2,558
$49
New patient visit (45+ min)
18
$2,429
$135
Removal of noncancer thickened skin growth, 2-4 growths
13
$1,687
$58
Removal of noncancer thickened skin growth, 1 growth
14
$1,200
$41
New patient visit (30+ min)
11
$1,130
$103
2014: 5 services
Original Medicare services billed in 2014
Removal of fingernails or toenails, 6 or more nails
51
$7,019
$40
Residence visit for established patient with low level of medical decision making, per day at least 30 minutes
17
$4,090
$66
Short return visit (20+ min)
23
$3,127
$60
Residence visit for established patient with straightforward medical decision making, per day at least 15 minutes
18
$1,952
$46
New patient visit (45+ min)
11
$1,686
$153
2013: 6 services
Original Medicare services billed in 2013
Residence visit for established patient with low level of medical decision making, per day at least 30 minutes
19
$5,236
$71
Removal of fingernails or toenails, 6 or more nails
34
$3,979
$42
New patient visit (45+ min)
16
$2,434
$152
Short return visit (20+ min)
18
$2,128
$69
New patient home visit, typically 45 minutes
11
$1,136
$103
Residence visit for established patient with straightforward medical decision making, per day at least 15 minutes
12
$1,075
$47
Drugs they prescribed that Part D paid
$33,152
Pharmacies billed $33,152 in 2024.
This is pharmacy cost, not the office bill, and not what patients paid.
Opioids were 9% of their Part D prescriptions (16 of 180) in 2024. Above the middle of the specialty; the typical podiatry clinician is at 5%.
152 generic and 28 brand-name prescriptions · $33,152 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.
Largest Part D drug costs
Jublia
26
$23,299
$896
Lidocaine
16
$4,906
$307
Ciclopirox
54
$1,932
$36
Ketoconazole
18
$399
$22
Terbinafine
18
$152
$8
Year by year
Part D prescribing by year
2024
180
59
9% (16)
16%
$33,152
2023
143
54
—None
22%
$33,648
2022
171
55
—None
25%
$33,180
2021
155
57
8% (13)
19%
$23,596
2020
101
40
—None
20%
$11,437
2019
96
44
—None
—None
$3,805
2018
97
42
16% (15)
—None
$3,462
2014
13
—None
—None
—None
$216
2013
11
—None
—None
0%
$166
Part D prescriptions only. A drug prescribed to fewer than 11 people in a year is hidden.
Ortho Dermatologics a division of Bausch Health US
Meals · 2020-03-23
Luzu
$17
Checkups this office reported
6 measures · 2023
Medicare asked this office to report how often certain checkups happened in 2023. This is not a grade for the doctor. A specialist’s patients may not need every screening.
Medicare’s overall office score
78.2 / 100
Scores the office’s reporting and systems. It is not a grade for how the doctor treats you.
Checkup rates this office reported to Medicare
Asked about smokingPatients asked about tobacco, with help to quit if they smoke
67%That's more than half.
658
Diabetes Mellitus: Diabetic Foot and Ankle Care, Peripheral Neuropathy - Neurological EvaluationAs Medicare defines this measure
99%
136
Diabetes Mellitus: Diabetic Foot and Ankle Care, Ulcer Prevention - Evaluation of FootwearAs Medicare defines this measure
60%
215
Diabetes poorly controlledPeople with diabetes whose blood sugar stayed very high
53%That's more than half. Worse on this measure.
110
Medications listed in the chartVisits where the current medication list was documented
94%That's most of the people this applied to.
2,615
Patients can see their records onlinePatients who were given electronic access to their health information
100%That's most of the people this applied to.
579
What the office says it does
Boxes the office ticked on its Medicare worksheet for 2023. Nobody checks these.
Agreed to federal review of their records system
Checks the state prescription-drug database before prescribing
Did a security review of patient data
Exchanges records both ways with other health systems
Implementation of medication management practice improvements
Implementation of Use of Specialist Reports Back to Referring Clinician or Group to Close Referral Loop
ONC-ACB Surveillance Attestation
Reports cases to public health electronically
Reports immunizations to the state registry
Professional record
NPI
1780819250
Licence
CA E 4921
Gender
Female
More record details
Sole proprietor
No
Taxonomy
Federal specialty code 213ES0103X (213ES0103X)
Mailing address
2100 Webster St Ste 407, San Francisco, CA, 94115
NPI first listed
2009-05-27
NPI last updated
2025-10-16
NPI record certified
2025-10-16
This is when the NPI record was last certified, not a medical board exam.