Chung-Ying Chen, MD

Offices

3 locations · Sutter Bay Medical Foundation · 3,783 clinicians in this group

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Plans that list them

1 plan · 1 carrier

A missing listing does not mean out of network. Directories change, and a listing does not cover every office. Call Dr. Chen’s office to confirm they take your plan. Ask about the office you use, its medical group, referrals and appointments.

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Plans whose provider directory lists this clinician

Alignment Health Sutter Advantage +More (HMO)	Alignment Health Plan	Listed	Oct 3, 2026

California Medical Board record

Licence A94535 · Current

Licensed to practise in California · since 2006 · expires 2028-02-29 · Indiana University School of Medicine.

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

Original Medicare doctor bills

$23,123

Medicare paid this office $23,123 for 125 people.

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

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Largest Original Medicare bills

Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	48	$7,549	$157
Short return visit (20+ min)	57	$4,984	$69
Return visit (30+ min)	33	$3,508	$92
Long return visit (40+ min)	13	$2,235	$160
New patient visit (15+ min)	12	$707	$59

Who their Medicare patients are

125 Original Medicare patients in 2024. Average age 77 · Women 74% · Also on Medicaid 15% · Health risk score 1.02. At or below the middle of the specialty; the typical family practice clinician is at 1.13.

Conditions among them: High blood pressure 58% · Diabetes 21% · Coronary heart disease 18% · Cancer 18% · Depression 17% · Atrial fibrillation 14% · Chronic kidney disease 13% · Heart failure 12%.

The office billed $64,269, Medicare allowed $30,565 and paid $23,123; for 249 services of 18 kinds; $1,111 of it was for drugs given in the office and $22,011 for care.

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	125	249	77	1.02	$64,269	$23,123
2023	139	235	77	0.92	$58,149	$20,533
2022	103	231	75	0.90	$51,896	$20,744
2021	116	238	76	0.85	$52,377	$20,046
2020	126	257	76	1.09	$46,383	$17,999
2019	166	339	77	1.05	$71,183	$25,380
2018	162	365	76	0.97	$73,511	$26,582
2017	114	272	75	0.81	$57,500	$17,930
2016	126	570	75	1.09	$53,832	$16,527
2015	111	253	76	0.99	$51,495	$17,517
2014	123	295	74	0.92	$65,129	$20,271
2013	114	273	74	0.94	$59,916	$17,836

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: 5 services

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Original Medicare services billed in 2023

Short return visit (20+ min)	70	$5,642	$65
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	34	$5,424	$160
Return visit (30+ min)	28	$3,233	$108
Long return visit (40+ min)	11	$1,577	$143
New patient visit (15+ min)	18	$1,176	$65

2022: 6 services

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Original Medicare services billed in 2022

Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	36	$5,680	$158
Short return visit (20+ min)	49	$5,076	$71
Return visit (30+ min)	24	$2,749	$106
Long return visit (40+ min)	12	$1,629	$136
Influenza vaccine, quadrivalent inactivated, 0.5 ml dosage	13	$913	$70
Administration of influenza virus vaccine	13	$491	$38

2021: 5 services

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Original Medicare services billed in 2021

Short return visit (20+ min)	56	$4,569	$64
Return visit (30+ min)	34	$3,837	$91
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	25	$3,641	$146
Influenza vaccine split virus, preservative free	13	$840	$65
Administration of influenza virus vaccine	14	$304	$22

2020: 6 services

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Original Medicare services billed in 2020

Short return visit (20+ min)	54	$3,244	$49
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	21	$2,972	$142
Return visit (30+ min)	19	$1,442	$69
Influenza vaccine split virus, preservative free	22	$1,334	$61
Administration of influenza virus vaccine	24	$502	$21
Administration of pneumococcal vaccine	13	$272	$21

2019: 7 services

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Original Medicare services billed in 2019

Short return visit (20+ min)	89	$6,434	$55
Return visit (30+ min)	44	$4,415	$85
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	31	$4,333	$140
New patient visit (15+ min)	18	$1,166	$65
Influenza vaccine split virus, preservative free	13	$657	$51
Administration of pneumococcal vaccine	15	$308	$21
Administration of influenza virus vaccine	12	$246	$21

2018: 7 services

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Original Medicare services billed in 2018

Short return visit (20+ min)	108	$9,016	$61
Return visit (30+ min)	43	$4,529	$78
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	33	$4,334	$131
Long return visit (40+ min)	13	$1,910	$127
Influenza vaccine split virus, preservative free	19	$810	$43
Administration of influenza virus vaccine	22	$566	$26
Administration of pneumococcal vaccine	11	$283	$26

2017: 5 services

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Original Medicare services billed in 2017

Short return visit (20+ min)	79	$5,645	$52
Return visit (30+ min)	45	$4,208	$73
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	19	$2,421	$127
Influenza vaccine split virus, preservative free	15	$658	$41
Administration of influenza virus vaccine	16	$536	$32

2016: 4 services

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Original Medicare services billed in 2016

Short return visit (20+ min)	86	$6,257	$53
Return visit (30+ min)	41	$4,291	$74
Influenza vaccine split virus, preservative free	13	$547	$36
Administration of influenza virus vaccine	13	$456	$30

2015: 6 services

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Original Medicare services billed in 2015

Return visit (30+ min)	48	$4,700	$69
Short return visit (20+ min)	67	$4,490	$55
Pneumococcal vaccine, 13-valent	14	$2,119	$151
Influenza vaccine split virus, preservative free	18	$632	$35
Administration of influenza virus vaccine	19	$590	$31
Administration of pneumococcal vaccine	14	$425	$30

2014: 3 services

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Original Medicare services billed in 2014

Short return visit (20+ min)	82	$7,736	$57
Return visit (30+ min)	62	$6,693	$71
Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit	16	$2,948	$184

2013: 2 services

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Original Medicare services billed in 2013

Return visit (30+ min)	59	$6,914	$70
Short return visit (20+ min)	75	$6,851	$59

Drugs they prescribed that Part D paid

$31,704

Pharmacies billed $31,704 in 2024.

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

603 generic and 48 brand-name prescriptions · $31,704 in drug cost · 25 antibiotic prescriptions to 23 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

Icosapent Ethyl	16	$2,420	$151
Metformin	49	$398	$8
Alendronate	29	$349	$12
Atorvastatin	68	$292	$4
Levothyroxine	18	$265	$15

See all 16 drugs

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Every Part D drug this clinician prescribed

Icosapent Ethyl	16	$2,420	$151
Metformin	49	$398	$8
Alendronate	29	$349	$12
Atorvastatin	68	$292	$4
Levothyroxine	18	$265	$15
Losartan	48	$189	$4
Lisinopril	23	$165	$7
Gabapentin	15	$150	$10
Hydrochlorothiazide	33	$107	$3
Benazepril	14	$97	$7
Allopurinol	12	$91	$8
Atenolol	23	$85	$4
Fenofibrate	12	$83	$7
Simvastatin	13	$79	$6
Amlodipine Besylate	26	$43	$2
Pantoprazole	11	$23	$2

Year by year

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Part D prescribing by year

2024	651	102	None	7%	$31,704
2023	633	109	None	None	$28,650
2022	613	93	None	None	$32,819
2021	731	86	None	None	$22,048
2020	830	103	None	10%	$26,989
2019	862	111	2% (17)	11%	$36,658
2018	907	123	2% (21)	13%	$41,346
2017	1,020	123	1% (13)	None	$44,028
2016	1,159	111	2% (20)	None	$48,125
2015	1,249	121	2% (21)	None	$51,608
2014	1,246	123	2% (21)	None	$68,837
2013	1,239	119	None	None	$74,898

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

See the drugs prescribed each year

2023: 18 drugs

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Part D drugs prescribed in 2023

Vascepa	15	$5,747	$383
Alendronate	33	$735	$22
Atorvastatin	53	$597	$11
Gabapentin	19	$575	$30
Losartan	44	$506	$12
Metformin	47	$472	$10
Levothyroxine	23	$428	$19
Atenolol	31	$402	$13
Lisinopril	31	$287	$9
Benazepril	13	$268	$21
Fenofibrate	12	$231	$19
Trazodone	11	$169	$15
Pantoprazole	12	$165	$14
Zolpidem	11	$142	$13
Allopurinol	13	$116	$9
Simvastatin	15	$115	$8
Amlodipine Besylate	18	$96	$5
Hydrochlorothiazide	23	$47	$2

2022: 16 drugs

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Part D drugs prescribed in 2022

Vascepa	17	$6,498	$382
Levothyroxine	32	$608	$19
Metformin	52	$473	$9
Losartan	43	$452	$11
Alendronate	19	$378	$20
Allopurinol	11	$334	$30
Atorvastatin	49	$307	$6
Pravastatin	15	$251	$17
Fenofibrate	12	$234	$20
Atenolol	32	$231	$7
Benazepril	14	$193	$14
Amlodipine Besylate	25	$155	$6
Pantoprazole	14	$148	$11
Hydrochlorothiazide	28	$100	$4
Lisinopril	31	$96	$3
Simvastatin	16	$74	$5

2021: 18 drugs

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Part D drugs prescribed in 2021

Vascepa	18	$6,580	$366
Rosuvastatin	11	$1,384	$126
Levothyroxine	37	$677	$18
Atorvastatin	46	$611	$13
Losartan	43	$544	$13
Alendronate	30	$438	$15
Metformin	53	$429	$8
Pravastatin	23	$424	$18
Benazepril	15	$252	$17
Atenolol	32	$244	$8
Fenofibrate	12	$235	$20
Lorazepam	15	$182	$12
Pantoprazole	17	$159	$9
Amlodipine Besylate	25	$156	$6
Gabapentin	20	$153	$8
Lisinopril	32	$140	$4
Simvastatin	21	$131	$6
Hydrochlorothiazide	26	$122	$5

2020: 25 drugs

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Part D drugs prescribed in 2020

Vascepa	18	$6,230	$346
Shingrix	12	$2,104	$175
Rosuvastatin	11	$1,167	$106
Levothyroxine	35	$759	$22
Alendronate	41	$644	$16
Atorvastatin	48	$626	$13
Metformin	52	$532	$10
Pravastatin	29	$477	$16
Losartan	43	$443	$10
Benazepril	20	$413	$21
Fluticasone Propionate	12	$302	$25
Atenolol	34	$300	$9
Simvastatin	25	$243	$10
Metoprolol	11	$236	$21
Allopurinol	12	$218	$18
Fenofibrate	12	$207	$17
Lisinopril	30	$196	$7
Gabapentin	21	$189	$9
Escitalopram	13	$188	$14
Metoprolol	15	$184	$12
Lorazepam	20	$172	$9
Amlodipine Besylate	24	$171	$7
Pantoprazole	25	$125	$5
Zolpidem	12	$101	$8
Hydrochlorothiazide	18	$100	$6

2019: 28 drugs

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Part D drugs prescribed in 2019

Vascepa	18	$5,639	$313
Tradjenta	11	$5,136	$467
Valsartan-Hydrochlorothiazide	14	$838	$60
Pravastatin	20	$668	$33
Alendronate	50	$667	$13
Atorvastatin	41	$602	$15
Levothyroxine	31	$595	$19
Losartan	45	$542	$12
Benazepril	20	$445	$22
Hydrocodone-Acetaminophen	15	$431	$29
Atenolol	33	$419	$13
Gabapentin	18	$399	$22
Metformin	46	$392	$9
Lorazepam	15	$356	$24
Olopatadine	11	$335	$30
Simvastatin	20	$289	$14
Fluticasone Propionate	16	$239	$15
Amlodipine Besylate	19	$223	$12
Zolpidem	21	$206	$10
Lisinopril	29	$202	$7
Fenofibrate	12	$180	$15
Pantoprazole	16	$154	$10
Ondansetron Odt	16	$143	$9
Glimepiride	19	$143	$8
Alprazolam	15	$136	$9
Azithromycin	16	$126	$8
Furosemide	15	$101	$7
Hydrochlorothiazide	13	$44	$3

2018: 27 drugs

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Part D drugs prescribed in 2018

Januvia	11	$5,078	$462
Vascepa	17	$4,945	$291
Hydrocodone-Acetaminophen	19	$851	$45
Levothyroxine	42	$827	$20
Valsartan	14	$748	$53
Pravastatin	22	$597	$27
Atorvastatin	36	$496	$14
Metformin	50	$495	$10
Atenolol	28	$457	$16
Losartan	40	$456	$11
Alendronate	62	$451	$7
Allopurinol	15	$440	$29
Gabapentin	17	$427	$25
Lorazepam	17	$380	$22
Glipizide Er	11	$372	$34
Benazepril	24	$357	$15
Simvastatin	29	$338	$12
Amlodipine Besylate	30	$320	$11
Fenofibrate	12	$226	$19
Lisinopril	35	$197	$6
Omeprazole	11	$155	$14
Furosemide	21	$138	$7
Hydrochlorothiazide	12	$135	$11
Zolpidem	12	$134	$11
Clopidogrel	12	$112	$9
Alprazolam	14	$97	$7
Pantoprazole	12	$67	$6

2017: 30 drugs

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Part D drugs prescribed in 2017

Januvia	12	$4,659	$388
Vascepa	16	$4,106	$257
Valsartan	24	$1,328	$55
Pravastatin	27	$965	$36
Levothyroxine	40	$911	$23
Atorvastatin	49	$773	$16
Metformin	69	$706	$10
Alendronate	71	$598	$8
Amlodipine Besylate	43	$431	$10
Simvastatin	34	$425	$12
Lorazepam	19	$415	$22
Atenolol	37	$388	$10
Zolpidem	19	$370	$19
Losartan	39	$346	$9
Gabapentin	14	$310	$22
Lisinopril	45	$284	$6
Fluticasone Propionate	17	$267	$16
Omeprazole	20	$250	$13
Benazepril	24	$248	$10
Allopurinol	12	$236	$20
Fenofibrate	12	$231	$19
Lovastatin	11	$182	$17
Hydrocodone-Acetaminophen	12	$165	$14
Glipizide	14	$162	$12
Irbesartan	13	$106	$8
Pantoprazole	13	$92	$7
Azithromycin	14	$87	$6
Alprazolam	14	$61	$4
Hydrochlorothiazide	14	$58	$4
Sulfamethoxazole-Trimethoprim	11	$18	$2

2016: 31 drugs

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Part D drugs prescribed in 2016

Omega-3 Acid Ethyl Esters	20	$5,084	$254
Valsartan	23	$2,047	$89
Pravastatin	25	$1,511	$60
Atorvastatin	46	$923	$20
Hydrocodone-Acetaminophen	19	$820	$43
Simvastatin	48	$767	$16
Metformin	71	$752	$11
Alendronate	52	$735	$14
Levothyroxine	35	$728	$21
Zolpidem	27	$589	$22
Lorazepam	17	$573	$34
Amlodipine Besylate	58	$536	$9
Losartan	55	$530	$10
Atenolol	49	$447	$9
Escitalopram	11	$413	$38
Omeprazole	37	$390	$11
Gabapentin	19	$381	$20
Allopurinol	12	$354	$30
Benazepril	31	$352	$11
Lisinopril	41	$289	$7
Glipizide	29	$274	$9
Clonidine	15	$211	$14
Fluticasone Propionate	18	$207	$12
Lovastatin	12	$183	$15
Hydrochlorothiazide	32	$160	$5
Glimepiride	11	$152	$14
Azithromycin	15	$122	$8
Fenofibrate	12	$118	$10
Furosemide	12	$117	$10
Sulfamethoxazole-Trimethoprim	11	$76	$7
Alprazolam	14	$59	$4

2015: 31 drugs

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Part D drugs prescribed in 2015

Omega-3 Acid Ethyl Esters	20	$6,532	$327
Pravastatin	43	$2,375	$55
Valsartan	17	$1,166	$69
Atorvastatin	48	$1,134	$24
Alendronate	63	$881	$14
Levothyroxine	42	$868	$21
Atenolol	77	$638	$8
Simvastatin	57	$632	$11
Metformin	64	$626	$10
Losartan	68	$557	$8
Benazepril	33	$505	$15
Metoprolol	16	$486	$30
Lorazepam	13	$478	$37
Amlodipine Besylate	64	$468	$7
Hydrocodone-Acetaminophen	20	$456	$23
Omeprazole	32	$400	$13
Clonidine	18	$382	$21
Glipizide	39	$368	$9
Zolpidem	30	$342	$11
Gabapentin	15	$341	$23
Allopurinol	14	$319	$23
Potassium Chloride	11	$279	$25
Lisinopril	36	$273	$8
Fluticasone Propionate	19	$170	$9
Sulfamethoxazole-Trimethoprim	11	$150	$14
Hydrochlorothiazide	33	$137	$4
Metoprolol	17	$131	$8
Azithromycin	15	$123	$8
Lovastatin	15	$122	$8
Furosemide	20	$102	$5
Fenofibrate	12	$88	$7

2014: 39 drugs

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Part D drugs prescribed in 2014

Nexium	12	$7,671	$639
Diovan	23	$6,056	$263
Lovaza	16	$5,436	$340
Nasonex	13	$2,113	$163
Pravastatin	41	$2,102	$51
Avodart	11	$1,851	$168
Alendronate	84	$1,190	$14
Ibandronate	14	$1,156	$83
Metformin	56	$816	$15
Simvastatin	59	$781	$13
Losartan	56	$733	$13
Levothyroxine	37	$657	$18
Oxybutynin Chloride Er	11	$617	$56
Proair Hfa	12	$595	$50
Atorvastatin	23	$528	$23
Atenolol	67	$519	$8
Benazepril	34	$514	$15
Amlodipine Besylate	52	$449	$9
Omeprazole	26	$449	$17
Clonidine	28	$409	$15
Gabapentin	16	$400	$25
Glipizide	29	$380	$13
Warfarin	11	$325	$30
Hydrocodone-Acetaminophen	16	$267	$17
Fluticasone Propionate	12	$258	$21
Lisinopril	33	$242	$7
Glyburide	11	$236	$21
Zolpidem	20	$226	$11
Escitalopram	15	$199	$13
Glimepiride	11	$198	$18
Tamsulosin	11	$148	$13
Clopidogrel	12	$143	$12
Lovastatin	12	$130	$11
Allopurinol	12	$122	$10
Metoprolol	20	$119	$6
Hydrochlorothiazide	26	$110	$4
Azithromycin	14	$108	$8
Lorazepam	11	$90	$8
Furosemide	14	$53	$4

2013: 30 drugs

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Part D drugs prescribed in 2013

Diovan	30	$7,779	$259
Lovaza	22	$6,437	$293
Nexium	12	$5,771	$481
Crestor	12	$4,521	$377
Flovent Hfa	13	$3,151	$242
Escitalopram	13	$2,208	$170
Avodart	12	$1,567	$131
Atorvastatin	28	$1,549	$55
Pravastatin	53	$1,487	$28
Losartan	47	$1,214	$26
Alendronate	81	$1,142	$14
Simvastatin	70	$1,045	$15
Proair Hfa	20	$939	$47
Metformin	51	$849	$17
Amlodipine Besylate	57	$636	$11
Gabapentin	23	$635	$28
Benazepril	29	$630	$22
Atenolol	65	$529	$8
Clonidine	16	$425	$27
Omeprazole	21	$418	$20
Hydrochlorothiazide	42	$319	$8
Glipizide	19	$287	$15
Levothyroxine	16	$244	$15
Lisinopril	30	$239	$8
Lisinopril-Hydrochlorothiazide	12	$232	$19
Metoprolol	22	$210	$10
Zolpidem	26	$188	$7
Warfarin	28	$183	$7
Lorazepam	14	$139	$10
Naproxen	12	$83	$7

Professional record

NPI: 1457436081
Licence: CA A94535California A94535: Current · expires 2028-02-29
Trained: Indiana University School of Medicine, 1999
Group: Sutter Bay Medical Foundation
Video visits: Lists video visits
Gender: Female

More record details

Sole proprietor: No
Taxonomy: Internal medicine (207R00000X); Pediatrics (208000000X)
Mailing address: 2350 W El Camino Real, 2nd Floor, Mountain View, CA, 94040
NPI first listed: 2006-10-25
NPI last updated: 2011-11-28

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