William M Choi | UniHealth

Offices

1 location · Stanford Health Care · 3,152 clinicians in this group

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Plan participation

Not verified

We could not verify current plan participation for this doctor. This does not mean they are out of network. Call William M Choi’s office at (650) 723-4000 to ask if they take your plan before you enroll.

California Medical Board record

Licence G59658 · Cancelled

Licence status: Cancelled · since 1987 · George Washington University School of Medicine.

License has been voluntarily canceled, or the license has been expired for at least five years and has not been renewed. No practice is permitted.

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

$1,555

Medicare paid this office $1,555 for 11 people.

This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.

Who their Medicare patients are

11 Original Medicare patients in 2024. Average age 51 · 85 and older 0% · Health risk score 2.23. Sicker patients than 9 in 10 peers; the typical oral surgery (dentist only) clinician is at 1.13.

The office billed $7,975, Medicare allowed $2,223 and paid $1,555; for 12 services of 4 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

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Original Medicare by year

2024	11	12	51	2.23	$7,975	$1,555
2023	14	15	44	1.04	$8,780	$1,811
2019	42	89	54	1.96	$24,179	$6,336
2018	23	37	59	1.87	$9,301	$2,566

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

2019: 2 services

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Original Medicare services billed in 2019

Extended office or other outpatient service, first hour	26	$2,785	$107
New patient visit (15+ min)	18	$734	$41

2018: 1 service

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Original Medicare services billed in 2018

Extended office or other outpatient service, first hour	12	$1,315	$110

Medicaid work

$1,229,187 in 2024

Medicaid paid $1,229,187 for 26,754 billed services this clinician did in 2024, up to 381 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.

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Largest Medicaid services in 2024

Service	2,374	$187,100
Service	2,050	$181,272
Service	238	$112,336
Service	1,439	$95,059
Service	723	$85,204
Service	1,234	$82,234
Service	1,525	$78,908
Service	903	$63,322
Service	1,062	$57,494
Service	1,084	$51,464
Service	3,384	$49,700
Service	1,023	$32,736

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Medicaid work by year

2024	26,754	23	381	$1,229,187
2023	35,878	28	443	$1,548,356
2022	23,205	22	379	$924,654
2021	26,051	23	376	$942,207
2020	12,065	20	197	$497,036
2019	17,059	20	208	$640,118
2018	14,906	19	224	$476,064

See the largest Medicaid services in earlier years

2023

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Largest Medicaid services in 2023

Service	2,386	$208,008
Service	2,207	$165,961
Service	2,164	$142,503
Service	2,091	$139,940
Service	781	$88,634
Service	1,734	$82,472
Service	1,577	$81,729
Service	1,438	$78,127
Service	144	$68,544
Service	837	$58,430
Service	3,866	$56,612
Service	1,469	$55,055

2022

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Largest Medicaid services in 2022

Service	2,106	$160,956
Service	1,626	$144,010
Service	1,404	$93,519
Service	1,595	$82,543
Service	617	$73,049
Service	864	$57,437
Service	1,005	$48,252
Service	3,148	$47,458
Service	698	$37,828
Service	980	$37,384
Service	1,086	$22,068
Service	350	$20,033

2021

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Largest Medicaid services in 2021

Service	1,669	$146,633
Service	1,846	$121,391
Service	785	$92,999
Service	2,012	$88,864
Service	1,226	$82,236
Service	1,169	$55,800
Service	1,838	$54,390
Service	747	$40,609
Service	3,373	$39,100
Service	155	$29,295
Service	1,295	$28,182
Service	1,350	$27,167

2020

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Largest Medicaid services in 2020

Service	791	$90,559
Service	773	$67,748
Service	935	$61,199
Service	814	$54,331
Service	777	$34,076
Service	527	$25,092
Service	433	$23,396
Service	701	$20,408
Service	109	$20,223
Service	800	$17,292
Service	615	$16,140
Service	1,314	$15,065

2019

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Largest Medicaid services in 2019

Service	1,087	$96,098
Service	1,206	$80,056
Service	623	$70,835
Service	1,025	$67,485
Service	1,483	$65,475
Service	1,253	$36,840
Service	674	$32,088
Service	540	$29,252
Service	2,080	$23,637
Service	112	$20,790
Service	851	$18,469
Service	917	$18,079

2018

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Largest Medicaid services in 2018

Service	1,020	$62,980
Service	925	$60,883
Service	473	$53,877
Service	1,136	$53,664
Service	1,247	$41,413
Service	1,196	$35,130
Service	647	$27,712
Service	494	$26,235
Service	302	$21,849
Service	2,044	$18,952
Service	723	$12,611
Service	220	$12,456

Drugs they prescribed that Part D paid

$305

Pharmacies billed $305 in 2024.

This is pharmacy cost, not the office bill, and not what patients paid.

49 generic and 0 brand-name prescriptions · $305 in drug cost · 32 antibiotic prescriptions to 28 people.

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.

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Largest Part D drug costs

Clindamycin	13	$107	$8
Amoxicillin	11	$70	$6

Year by year

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Part D prescribing by year

2024	49	33	None	0%	$305
2023	118	60	None	0%	$650
2022	51	34	None	0%	$324
2021	70	40	None	None	$402
2020	52	33	27% (14)	0%	$298
2019	29	20	None	None	$203
2018	58	29	None	None	$340
2017	81	41	16% (13)	None	$547
2016	102	52	20% (20)	0%	$915
2015	75	35	31% (23)	0%	$443
2014	53	20	23% (12)	None	$595
2013	49	31	39% (19)	None	$455

Part D prescriptions only. A drug prescribed to fewer than 11 people in a year is hidden.

See the drugs prescribed each year

2023: 3 drugs

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Part D drugs prescribed in 2023

Amoxicillin	43	$210	$5
Clindamycin	15	$191	$13
Ibuprofen	43	$123	$3

2022: 2 drugs

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Part D drugs prescribed in 2022

Amoxicillin	16	$76	$5
Ibuprofen	12	$42	$3

2021: 2 drugs

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Part D drugs prescribed in 2021

Amoxicillin	28	$157	$6
Ibuprofen	22	$94	$4

2020: 2 drugs

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Part D drugs prescribed in 2020

Amoxicillin	22	$124	$6
Ibuprofen	11	$39	$4

2018: 2 drugs

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Part D drugs prescribed in 2018

Amoxicillin	28	$127	$5
Ibuprofen	14	$53	$4

2017: 2 drugs

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Part D drugs prescribed in 2017

Amoxicillin	37	$248	$7
Ibuprofen	12	$69	$6

2016: 3 drugs

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Part D drugs prescribed in 2016

Amoxicillin	43	$204	$5
Hydrocodone-Acetaminophen	18	$137	$8
Ibuprofen	29	$106	$4

2015: 3 drugs

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Part D drugs prescribed in 2015

Hydrocodone-Acetaminophen	21	$145	$7
Ibuprofen	21	$99	$5
Amoxicillin	19	$96	$5

2014: 3 drugs

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Part D drugs prescribed in 2014

Chlorhexidine Gluconate	17	$119	$7
Amoxicillin	11	$73	$7
Hydrocodone-Acetaminophen	11	$73	$7

2013: 1 drug

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Part D drugs prescribed in 2013

Hydrocodone-Acetaminophen	19	$104	$5

Money from drug and device companies

$10,401 in 2025

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Industry payments by year

2025	3	4	$10,309	$10,401
2024	3	11	$9,000	$10,149
2023	2	4	$45	$151
2022	1	1	$14,000	$14,000
2021	1	1	$14,400	$14,400

Paid work is consulting, speaking, honoraria and royalties, as opposed to meals and travel.

A payment is not proof that care is biased.

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Payments by company

Hiossen	None	$10,250	1 payment Honoraria · 2025-10-17 · $10,250
Straumann USA	None	$93	2 payments Meals · 2025-12-12 · $72 Meals · 2025-07-06 · $21
Septodont	Bioroot Flow Sample	$59	1 payment Paid to speak or teach for Bioroot Flow Sample · 2025-05-21 · $59

See all 4 published payments

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Every published payment

Straumann USA	Meals · 2025-12-12	None	$72
Hiossen	Honoraria · 2025-10-17	None	$10,250
Straumann USA	Meals · 2025-07-06	None	$21
Septodont	Paid to speak or teach · 2025-05-21	Bioroot Flow Sample	$59

See earlier years (2024, 2023, 2022, 2021)

2024: $10,149

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Payments by company in 2024

Hiossen	None	$9,000	1 payment Honoraria · 2024-09-07 · $9,000
Stryker	Na	$1,076	9 payments Travel for Na · 2024-04-19 · $325 Meals for Na · 2024-03-20 · $46 Meals for Na · 2024-03-20 · $47 Travel for Na · 2024-03-17 · $62 Travel for Na · 2024-03-16 · $47 Travel for Na · 2024-03-16 · $20 Travel for Na · 2024-03-16 · $15 Meals for Na · 2024-03-15 · $9 Travel for Na · 2024-01-16 · $506
Straumann USA	None	$73	1 payment Meals · 2024-05-26 · $73

2023: $151

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Payments by company in 2023

Straumann USA	None	$107	3 payments Meals · 2023-10-10 · $56 Meals · 2023-08-08 · $16 Meals · 2023-03-09 · $35
Septodont	Bioroot Flow (Sample)	$45	1 payment Paid to speak or teach for Bioroot Flow (Sample) · 2023-10-11 · $45

2022: $14,000

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Payments by company in 2022

Hiossen	None	$14,000	1 payment Honoraria · 2022-06-03 · $14,000

2021: $14,400

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Payments by company in 2021

Hiossen	None	$14,400	1 payment Honoraria · 2021-10-22 · $14,400

Checkups this office reported

Medicare did not publish checkup rates for this clinician.

Medicare’s overall office score: 76.5 / 100; Scores the office’s reporting and systems. It is not a grade for how the doctor treats you.

Professional record

NPI: 1720396427
Licence: CA 59658California G59658: Cancelled
Trained: Temple University School of Medicine, 2009
Group: Stanford Health Care
Gender: Male

More record details

Sole proprietor: No
Taxonomy: Federal specialty code 122300000X (122300000X)
Mailing address: 300 Pasteur Dr, Palo Alto, CA, 94304
NPI first listed: 2010-09-16
NPI last updated: 2024-04-24
NPI record certified: 2024-04-24

This is when the NPI record was last certified, not a medical board exam.