Ronald Y Yamaguchi, MD

Offices

2 locations · Permanente Medical Group Inc · 10,928 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 Dr. Yamaguchi’s office at (408) 851-1000 to ask if they take your plan before you enroll.

California Medical Board record

Licence G79384 · Current

Licensed to practise in California · since 1994 · expires 2028-05-31 · University of California, Davis School of Medicine.

No disciplinary actions, convictions, malpractice judgments or citations in this record.

Drugs they prescribed that Part D paid

$32,173

Pharmacies billed $32,173 in 2024.

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

Opioids were 1% of their Part D prescriptions (12 of 1,195) in 2024. At or below the middle of the specialty; the typical urology clinician is at 2%.

1,173 generic and 22 brand-name prescriptions · $32,173 in drug cost · 184 antibiotic prescriptions to 124 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

Finasteride	482	$7,475	$16
Terazosin	136	$5,555	$41
Tamsulosin	225	$4,001	$18
Renacidin	11	$2,319	$211
Potassium Citrate Er	11	$957	$87

See all 13 drugs

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Every Part D drug this clinician prescribed

Finasteride	482	$7,475	$16
Terazosin	136	$5,555	$41
Tamsulosin	225	$4,001	$18
Renacidin	11	$2,319	$211
Potassium Citrate Er	11	$957	$87
Trospium Chloride	31	$918	$30
Bicalutamide	14	$376	$27
Sulfamethoxazole-Trimethoprim	55	$376	$7
Cephalexin	30	$369	$12
Ciprofloxacin	44	$302	$7
Nitrofurantoin Mono-Macro	15	$277	$18
Amoxicillin	21	$198	$9
Alendronate	14	$137	$10

Year by year

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Part D prescribing by year

2024	1,195	420	1% (12)	2%	$32,173
2023	1,039	376	1% (13)	3%	$34,726
2022	1,069	360	2% (17)	None	$47,117
2021	1,057	361	None	5%	$49,387
2020	963	354	None	5%	$40,859
2019	982	381	3% (27)	4%	$39,596
2018	1,053	363	3% (31)	3%	$41,686
2017	1,065	362	4% (40)	3%	$40,621
2016	1,117	377	5% (53)	2%	$58,301
2015	1,066	379	4% (42)	None	$87,493
2014	1,096	339	6% (62)	None	$86,162
2013	1,017	320	4% (37)	None	$80,399

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

See the drugs prescribed each year

2023: 11 drugs

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Part D drugs prescribed in 2023

Myrbetriq	18	$12,035	$669
Terazosin	147	$6,411	$44
Finasteride	405	$6,247	$15
Tamsulosin	181	$3,291	$18
Trospium Chloride	29	$902	$31
Cephalexin	37	$441	$12
Sulfamethoxazole-Trimethoprim	55	$374	$7
Ciprofloxacin	48	$328	$7
Amoxicillin	18	$158	$9
Alendronate	13	$134	$10
Oxycodone	11	$71	$6

2022: 12 drugs

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Part D drugs prescribed in 2022

Myrbetriq	30	$21,440	$715
Terazosin	162	$6,945	$43
Finasteride	393	$6,080	$15
Tamsulosin	190	$3,891	$20
Renacidin	16	$3,170	$198
Trospium Chloride	69	$1,685	$24
Cefadroxil	24	$283	$12
Sulfamethoxazole-Trimethoprim	33	$233	$7
Ciprofloxacin	37	$233	$6
Bicalutamide	12	$224	$19
Alendronate	13	$135	$10
Oxycodone	14	$88	$6

2021: 11 drugs

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Part D drugs prescribed in 2021

Myrbetriq	32	$22,436	$701
Finasteride	386	$6,051	$16
Terazosin	147	$5,613	$38
Renacidin	19	$4,583	$241
Tamsulosin	157	$3,295	$21
Trospium Chloride	60	$1,591	$27
Bicalutamide	17	$373	$22
Ciprofloxacin	62	$365	$6
Cefadroxil	34	$353	$10
Sulfamethoxazole-Trimethoprim	39	$340	$9
Alendronate	16	$166	$10

2020: 14 drugs

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Part D drugs prescribed in 2020

Myrbetriq	13	$11,252	$866
Finasteride	392	$9,338	$24
Renacidin	25	$4,912	$196
Terazosin	158	$4,750	$30
Tamsulosin	127	$3,056	$24
Potassium Citrate Er	11	$1,525	$139
Trospium Chloride	28	$1,166	$42
Dutasteride	12	$563	$47
Oxybutynin Chloride Er	13	$403	$31
Sulfamethoxazole-Trimethoprim	44	$380	$9
Ciprofloxacin	46	$285	$6
Bicalutamide	16	$218	$14
Amoxicillin	17	$157	$9
Alendronate	12	$125	$10

2019: 13 drugs

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Part D drugs prescribed in 2019

Myrbetriq	18	$11,692	$650
Finasteride	371	$9,090	$25
Terazosin	173	$4,211	$24
Tamsulosin	144	$3,957	$27
Renacidin	11	$2,069	$188
Oxybutynin Chloride Er	12	$1,236	$103
Dutasteride	16	$1,021	$64
Trospium Chloride	19	$691	$36
Sulfamethoxazole-Trimethoprim	60	$424	$7
Bicalutamide	20	$383	$19
Ciprofloxacin	28	$175	$6
Hydrocodone-Acetaminophen	23	$146	$6
Amoxicillin	15	$130	$9

2018: 12 drugs

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Part D drugs prescribed in 2018

Finasteride	384	$9,497	$25
Tamsulosin	171	$5,336	$31
Potassium Citrate Er	11	$4,057	$369
Terazosin	186	$3,711	$20
Dutasteride	19	$1,964	$103
Oxybutynin Chloride Er	24	$1,232	$51
Trospium Chloride	11	$720	$65
Sulfamethoxazole-Trimethoprim	42	$440	$10
Ciprofloxacin	48	$314	$7
Hydrocodone-Acetaminophen	29	$202	$7
Alendronate	12	$155	$13
Amoxicillin	13	$105	$8

2017: 12 drugs

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Part D drugs prescribed in 2017

Finasteride	411	$11,175	$27
Tamsulosin	181	$7,283	$40
Potassium Citrate Er	12	$4,809	$401
Dutasteride	17	$1,981	$117
Terazosin	160	$1,818	$11
Oxybutynin Chloride Er	19	$914	$48
Trospium Chloride	15	$580	$39
Bicalutamide	23	$556	$24
Ciprofloxacin	58	$406	$7
Hydrocodone-Acetaminophen	35	$394	$11
Sulfamethoxazole-Trimethoprim	32	$339	$11
Cephalexin	17	$191	$11

2016: 11 drugs

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Part D drugs prescribed in 2016

Finasteride	431	$15,552	$36
Tamsulosin	184	$13,969	$76
Potassium Citrate Er	13	$6,005	$462
Dutasteride	18	$4,116	$229
Terazosin	180	$2,183	$12
Trospium Chloride	22	$1,293	$59
Hydrocodone-Acetaminophen	47	$787	$17
Ciprofloxacin	67	$536	$8
Bicalutamide	17	$491	$29
Sulfamethoxazole-Trimethoprim	46	$465	$10
Cephalexin	16	$187	$12

2015: 12 drugs

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Part D drugs prescribed in 2015

Finasteride	451	$45,993	$102
Avodart	18	$10,532	$585
Tamsulosin	129	$8,636	$67
Potassium Citrate Er	12	$5,531	$461
Oxybutynin Chloride Er	19	$2,311	$122
Terazosin	192	$2,225	$12
Trospium Chloride	19	$1,502	$79
Hydrocodone-Acetaminophen	38	$621	$16
Ciprofloxacin	70	$583	$8
Bicalutamide	13	$517	$40
Cephalexin	25	$333	$13
Sulfamethoxazole-Trimethoprim	25	$302	$12

2014: 10 drugs

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Part D drugs prescribed in 2014

Finasteride	443	$48,217	$109
Avodart	28	$14,199	$507
Potassium Citrate Er	13	$6,046	$465
Tamsulosin	119	$5,722	$48
Terazosin	210	$2,541	$12
Oxybutynin Chloride Er	20	$2,497	$125
Bicalutamide	21	$752	$36
Hydrocodone-Acetaminophen	59	$629	$11
Cephalexin	39	$549	$14
Ciprofloxacin	79	$546	$7

2013: 11 drugs

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Part D drugs prescribed in 2013

Finasteride	379	$41,342	$109
Avodart	40	$18,455	$461
Tamsulosin	113	$4,931	$44
Oxybutynin Chloride Er	22	$2,497	$113
Trospium Chloride	13	$2,375	$183
Terazosin	190	$2,221	$12
Bicalutamide	24	$1,451	$60
Ciprofloxacin	85	$591	$7
Cephalexin	37	$537	$15
Sulfamethoxazole-Trimethoprim	24	$526	$22
Hydrocodone-Acetaminophen	34	$330	$10

Money from drug and device companies

$84 in 2019

A payment is not proof that care is biased.

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Payments by company

Dornier MedTech America	Lithotripters & Accessories	$84	1 payment Meals for Lithotripters & Accessories · 2019-10-16 · $84

See the published payment

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Every published payment

Dornier MedTech America	Meals · 2019-10-16	Lithotripters & Accessories	$84

Professional record

NPI: 1104905843
Licence: CA G79384California G79384: Current · expires 2028-05-31
Trained: University of California, Davis School of Medicine, 1992
Group: Permanente Medical Group Inc
Gender: Male

More record details

Sole proprietor: No
Medicaid ID: CA 00G793840
Taxonomy: Urology (208800000X)
Mailing address: 1800 Harrison St Fl 7, Oakland, CA, 94612
NPI first listed: 2006-11-03
NPI last updated: 2021-12-06

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

This office lists an electronic records connection.