A missing listing does not mean out of network. Directories change, and a listing does not cover every office. Call Dr. Chiang’s office at (415) 642-0707 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
Anesthesia for lens surgery
196
$26,673
$114
Anesthesia for other procedure on eye
45
$6,902
$147
Who their Medicare patients are
251 Original Medicare patients in 2024. Average age 77 · Women 57% · Also on Medicaid 18% · Health risk score 0.94. At or below the middle of the specialty; the typical anesthesiology clinician is at 1.54.
The office billed $205,500, Medicare allowed $44,929 and paid $35,869; for 293 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
251
293
77
0.94
$205,500
$35,869
2023
398
440
76
0.87
$339,000
$58,915
2022
237
260
76
0.95
$195,100
$34,880
2021
242
273
76
0.97
$203,300
$37,004
2020
27
28
79
0.81
$19,000
$2,905
2019
128
131
77
0.99
$93,300
$17,394
2018
169
213
76
1.02
$129,821
$25,309
2017
149
295
74
1.29
$111,531
$28,385
2016
326
540
75
1.15
$256,405
$57,752
2015
426
821
74
1.20
$379,940
$86,762
2014
918
1,431
75
1.09
$829,854
$165,903
2013
1,132
1,738
75
1.02
$1,056,860
$208,811
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
Anesthesia for lens surgery
264
$35,561
$124
Anesthesia for other procedure on eye
81
$13,569
$158
Anesthesia for procedure on eye for removal of iris
34
$4,346
$106
Anesthesia for procedure on eyelid
13
$2,511
$193
2022: 2 services
Original Medicare services billed in 2022
Anesthesia for lens surgery
167
$23,050
$123
Anesthesia for other procedure on eye
60
$10,220
$162
2021: 3 services
Original Medicare services billed in 2021
Anesthesia for lens surgery
172
$23,999
$121
Anesthesia for other procedure on eye
46
$8,068
$165
Anesthesia for procedure on eyelid
17
$3,184
$187
2020: 1 service
Original Medicare services billed in 2020
Anesthesia for lens surgery
25
$2,745
$106
2019: 2 services
Original Medicare services billed in 2019
Anesthesia for lens surgery
102
$12,931
$123
Anesthesia for other procedure on eye
20
$3,165
$158
2018: 3 services
Original Medicare services billed in 2018
Anesthesia for lens surgery
109
$14,345
$121
Anesthesia for other procedure on eye
36
$6,126
$166
Return visit (30+ min)
18
$2,444
$70
2017: 3 services
Original Medicare services billed in 2017
Anesthesia for lens surgery
102
$12,602
$120
Return visit (30+ min)
32
$10,187
$88
Anesthesia for other procedure on eye
11
$1,869
$170
2016: 5 services
Original Medicare services billed in 2016
Anesthesia for lens surgery
205
$25,511
$119
Return visit (30+ min)
38
$16,547
$94
Anesthesia for other procedure on eye
32
$5,034
$153
Anesthesia for nerve block and injection procedure, prone position
21
$2,699
$129
Anesthesia for procedure on eyelid
12
$2,077
$173
2015: 6 services
Original Medicare services billed in 2015
Anesthesia for lens surgery
240
$31,551
$124
Return visit (30+ min)
45
$18,629
$94
Anesthesia for other procedure on eye
41
$6,922
$161
Anesthesia for nerve block and injection procedure, prone position
41
$6,657
$136
Anesthesia for x-ray procedure (accessed through the skin) on spine and spinal cord
27
$4,306
$144
New patient visit (45+ min)
18
$2,474
$137
2014: 11 services
Original Medicare services billed in 2014
Anesthesia for lens surgery
560
$75,669
$124
Anesthesia for other procedure on eye
113
$21,118
$170
Anesthesia for nerve block and injection procedure, prone position
96
$16,863
$128
Return visit (30+ min)
44
$13,165
$98
Anesthesia for x-ray procedure (accessed through the skin) on spine and spinal cord
55
$7,949
$128
Ultrasonic guidance for needle placement
12
$3,432
$73
Anesthesia for procedure on eyelid
17
$2,913
$171
New patient visit (45+ min)
19
$2,911
$153
Aspiration and/or injection of fluid from large joint
11
$2,531
$56
Injection of anesthetic and/or steroid drug into sacral spine nerve root using imaging guidance, single level
12
$1,896
$135
Injection of anesthetic or steroid into joint between lower spine and hip bone using imaging guidance
11
$1,147
$88
2013: 11 services
Original Medicare services billed in 2013
Anesthesia for lens surgery
714
$98,334
$121
Anesthesia for other procedure on eye
136
$25,121
$166
Anesthesia for nerve block and injection procedure, prone position
129
$20,118
$128
Return visit (30+ min)
38
$12,740
$99
Anesthesia for procedure on eyelid
36
$6,265
$161
Anesthesia for x-ray procedure (accessed through the skin) on spine and spinal cord
42
$6,025
$137
New patient visit (45+ min)
19
$2,892
$152
Aspiration and/or injection of fluid from large joint
12
$2,633
$55
Injection of lower or sacral spine facet joint using imaging guidance, single level
13
$1,706
$122
Injection of lower or sacral spine facet joint using imaging guidance, second level
13
$839
$60
Fluoroscopic guidance for spine or back muscle injection
13
$407
$27
Medicaid work
$9 in 2023
Medicaid paid $9 for 15 billed services this clinician did in 2023, up to 15 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 2023
Anesthesia for procedures on eye; lens surgery
15
$9
Medicaid work by year
2023
15
1
15
$9
Drugs they prescribed that Part D paid
This is pharmacy cost, not the office bill, and not what patients paid.
Opioids were 57% of their 100 Part D prescriptions in 2018. Long-acting opioids: 25% of their opioid prescriptions.
Part D prescriptions only. A drug prescribed to fewer than 11 people in a year is hidden.
Year by year
Part D prescribing by year
2018
100
21
57% (57)
20%
$8,684
2017
303
41
54% (164)
14%
$37,062
2016
669
55
43% (285)
11%
$49,093
2015
648
52
48% (311)
15%
$42,683
2014
506
51
41% (209)
16%
$31,910
2013
329
48
43% (142)
18%
$18,235
Part D prescriptions only. A drug prescribed to fewer than 11 people in a year is hidden.
See the drugs prescribed each year
2018: 2 drugs
Part D drugs prescribed in 2018
Oxycodone
11
$579
$53
Hydrocodone-Acetaminophen
19
$497
$26
2017: 9 drugs
Part D drugs prescribed in 2017
Oxycontin
17
$9,886
$582
Oxycodone
39
$1,467
$38
Morphine Sulfate Er
28
$1,308
$47
Oxycodone-Acetaminophen
26
$1,298
$50
Hydrocodone-Acetaminophen
37
$726
$20
Amitriptyline
29
$550
$19
Gabapentin
30
$460
$15
Diclofenac
13
$440
$34
Ibuprofen
16
$89
$6
2016: 18 drugs
Part D drugs prescribed in 2016
Butrans
17
$5,833
$343
Lyrica
11
$5,444
$495
Oxycodone-Acetaminophen
67
$4,978
$74
Morphine Sulfate Er
64
$3,066
$48
Lidocaine
18
$2,938
$163
Hydrocodone-Acetaminophen
85
$2,513
$30
Diclofenac
26
$1,390
$53
Oxycodone
41
$1,257
$31
Amitriptyline
31
$1,036
$33
Gabapentin
76
$928
$12
Voltaren
17
$851
$50
Tizanidine
19
$631
$33
Topiramate
14
$438
$31
Ibuprofen
40
$375
$9
Duloxetine
14
$296
$21
Omeprazole
20
$160
$8
Tramadol
17
$55
$3
Diazepam
11
$33
$3
2015: 15 drugs
Part D drugs prescribed in 2015
Oxycontin
24
$10,026
$418
Lyrica
21
$9,213
$439
Oxycodone-Acetaminophen
56
$3,731
$67
Hydrocodone-Acetaminophen
113
$3,171
$28
Morphine Sulfate Er
58
$2,752
$47
Voltaren
36
$1,753
$49
Oxycodone
43
$1,612
$37
Amitriptyline
32
$1,350
$42
Gabapentin
62
$850
$14
Ibuprofen
46
$360
$8
Diclofenac
13
$347
$27
Nabumetone
13
$257
$20
Nortriptyline
13
$173
$13
Naproxen
11
$102
$9
Tramadol
11
$51
$5
2014: 14 drugs
Part D drugs prescribed in 2014
Lyrica
21
$5,930
$282
Oxycontin
14
$5,578
$398
Oxycodone-Acetaminophen
26
$2,841
$109
Hydrocodone-Acetaminophen
80
$1,607
$20
Morphine Sulfate Er
37
$1,492
$40
Voltaren
20
$1,140
$57
Gabapentin
62
$1,030
$17
Oxycodone
28
$851
$30
Diclofenac
15
$499
$33
Amitriptyline
36
$447
$12
Nabumetone
15
$435
$29
Ibuprofen
30
$320
$11
Omeprazole
18
$185
$10
Clonazepam
14
$164
$12
2013: 9 drugs
Part D drugs prescribed in 2013
Oxycontin
14
$3,869
$276
Oxycodone Hcl-Acetaminophen
20
$1,129
$56
Oxycodone
26
$695
$27
Morphine Sulfate Er
21
$585
$28
Gabapentin
50
$579
$12
Hydrocodone-Acetaminophen
37
$558
$15
Diclofenac
18
$494
$27
Ibuprofen
16
$139
$9
Amitriptyline
27
$100
$4
Money from drug and device companies
$55 in 2023
Industry payments by year
2023
3
3
—None
$55
2022
1
1
—None
$21
Paid work is consulting, speaking, honoraria and royalties, as opposed to meals and travel.