Pauline Siao, MD | UniHealth

Offices

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

Looking this up.

Hospitals listed: 555835. That is not proof they admit you there this week.

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. Siao’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 A66585 · Current

Licensed to practise in California · since 1998 · expires 2028-08-31 · University of Southern California Keck School of Medicine.

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

Original Medicare doctor bills

$30,491

Medicare paid this office $30,491 for 91 people.

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

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Largest Original Medicare bills

Short return visit (20+ min)	65	$10,552	$82
Return visit (30+ min)	38	$5,278	$110
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	33	$5,175	$157
Sarscov2 vac 50 mcg/0.5ml im	14	$2,601	$153
Influenza vaccine, inactivated	18	$1,473	$82

See all 7 services

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Every Original Medicare service billed

Short return visit (20+ min)	65	$10,552	$82
Return visit (30+ min)	38	$5,278	$110
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	33	$5,175	$157
Sarscov2 vac 50 mcg/0.5ml im	14	$2,601	$153
Influenza vaccine, inactivated	18	$1,473	$82
Admn sarscov2 vacc 1 dose	14	$886	$52
Administration of influenza virus vaccine	18	$703	$39

Who their Medicare patients are

91 Original Medicare patients in 2024. Average age 77 · Under 65 0% · 85 and older 14% · Women 73% · Also on Medicaid 0% · Health risk score 0.79. At or below the middle of the specialty; the typical family practice clinician is at 1.13.

Conditions among them: High blood pressure 52% · Diabetes 16% · Coronary heart disease 14% · Chronic kidney disease 14% · Cancer 14% · Depression 14%.

The office billed $75,659, Medicare allowed $36,200 and paid $30,491; for 313 services of 23 kinds; $5,637 of it was for drugs given in the office and $24,854 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	91	313	77	0.79	$75,659	$30,491
2023	76	225	78	0.96	$48,362	$19,961
2022	110	183	74	0.63	$38,749	$18,450
2021	91	212	73	0.55	$40,059	$19,041
2020	87	197	72	0.66	$33,418	$14,496
2019	91	244	73	0.63	$49,617	$20,337
2018	91	210	73	0.75	$38,911	$15,729
2017	73	207	73	0.77	$40,775	$15,426
2016	76	193	73	0.81	$39,848	$14,839
2015	93	257	72	0.85	$46,905	$20,423
2014	90	218	73	0.74	$38,849	$13,041
2013	79	182	71	0.87	$33,210	$10,962

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)	56	$8,104	$83
Return visit (30+ min)	24	$3,950	$120
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	20	$3,191	$160
Influenza vaccine, quadrivalent inactivated, 0.5 ml dosage	15	$1,137	$76
Administration of influenza virus vaccine	15	$567	$38

2022: 3 services

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Original Medicare services billed in 2022

Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	48	$7,529	$157
Short return visit (20+ min)	64	$6,017	$73
Return visit (30+ min)	19	$2,367	$113

2021: 5 services

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Original Medicare services billed in 2021

Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	46	$6,699	$146
Short return visit (20+ min)	57	$6,598	$77
Return visit (30+ min)	21	$2,644	$106
Influenza vaccine split virus, preservative free	12	$783	$65
Administration of influenza virus vaccine	13	$275	$21

2020: 5 services

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Original Medicare services billed in 2020

Short return visit (20+ min)	55	$4,547	$58
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	32	$4,503	$141
Return visit (30+ min)	16	$1,552	$86
Influenza vaccine split virus, preservative free	17	$1,037	$61
Administration of influenza virus vaccine	19	$391	$21

2019: 4 services

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Original Medicare services billed in 2019

Short return visit (20+ min)	61	$6,070	$60
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	36	$5,027	$140
Return visit (30+ min)	33	$3,926	$93
Administration of pneumococcal vaccine	19	$383	$20

2018: 5 services

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Original Medicare services billed in 2018

Short return visit (20+ min)	54	$4,696	$62
Return visit (30+ min)	30	$3,450	$88
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	26	$3,414	$131
Influenza vaccine split virus, preservative free	17	$750	$44
Administration of influenza virus vaccine	19	$481	$25

2017: 4 services

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Original Medicare services billed in 2017

Short return visit (20+ min)	50	$5,851	$59
Return visit (30+ min)	23	$2,829	$88
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	21	$2,675	$127
Administration of pneumococcal vaccine	12	$365	$30

2016: 4 services

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Original Medicare services billed in 2016

Short return visit (20+ min)	54	$5,523	$60
Return visit (30+ min)	26	$2,770	$96
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	20	$2,535	$127
Administration of pneumococcal vaccine	12	$365	$30

2015: 5 services

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Original Medicare services billed in 2015

Short return visit (20+ min)	60	$6,212	$64
Return visit (30+ min)	32	$4,759	$103
Pneumococcal vaccine, 13-valent	31	$4,707	$152
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	18	$2,368	$132
Administration of pneumococcal vaccine	31	$942	$30

2014: 2 services

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Original Medicare services billed in 2014

Short return visit (20+ min)	71	$6,623	$54
Return visit (30+ min)	21	$2,670	$92

2013: 3 services

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Original Medicare services billed in 2013

Short return visit (20+ min)	52	$5,072	$58
Return visit (30+ min)	29	$3,008	$86
Administration of influenza virus vaccine	11	$336	$31

Drugs they prescribed that Part D paid

$29,766

Pharmacies billed $29,766 in 2024.

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

Opioids were 2% of their Part D prescriptions (12 of 722) in 2024. At or below the middle of the specialty; the typical family practice clinician is at 2%.

642 generic and fewer than 11 brand-name prescriptions · $29,766 in drug cost · 64 antibiotic prescriptions to 34 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

Synthroid	15	$1,468	$98
Dicloxacillin	14	$901	$64
Paroxetine Er	11	$736	$67
Levothyroxine	38	$546	$14
Atorvastatin	47	$531	$11

See all 16 drugs

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Every Part D drug this clinician prescribed

Synthroid	15	$1,468	$98
Dicloxacillin	14	$901	$64
Paroxetine Er	11	$736	$67
Levothyroxine	38	$546	$14
Atorvastatin	47	$531	$11
Gabapentin	26	$285	$11
Losartan	18	$270	$15
Amlodipine Besylate	31	$227	$7
Zolpidem	18	$213	$12
Trazodone	14	$212	$15
Escitalopram	14	$209	$15
Lorazepam	17	$185	$11
Simvastatin	12	$126	$11
Cephalexin	17	$95	$6
Metformin	13	$9	$1
Paxlovid	16	$0	$0

Year by year

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Part D prescribing by year

2024	722	128	2% (12)	None	$29,766
2023	743	162	2% (16)	5%	$36,591
2022	1,078	136	1% (14)	10%	$49,562
2021	1,166	116	1% (12)	None	$62,534
2020	1,040	109	2% (21)	None	$53,140
2019	985	100	4% (36)	16%	$51,319
2018	899	103	4% (35)	13%	$48,604
2017	908	97	5% (46)	None	$51,048
2016	917	102	6% (56)	None	$50,344
2015	873	101	5% (42)	17%	$42,012
2014	967	99	6% (59)	17%	$60,446
2013	904	77	10% (91)	21%	$65,962

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

See the drugs prescribed each year

2023: 19 drugs

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Part D drugs prescribed in 2023

Atorvastatin	57	$867	$15
Divalproex Sodium Er	12	$693	$58
Losartan	29	$564	$19
Levothyroxine	22	$467	$21
Hydroxychloroquine Sulfate	12	$434	$36
Gabapentin	18	$381	$21
Hydrocodone-Acetaminophen	13	$251	$19
Fluoxetine	19	$251	$13
Amlodipine Besylate	24	$247	$10
Paxlovid (Eua)	24	$234	$10
Metformin Hcl Er	17	$188	$11
Simvastatin	20	$175	$9
Omeprazole	15	$169	$11
Lisinopril-Hydrochlorothiazide	14	$145	$10
Zolpidem	18	$134	$7
Lisinopril	15	$114	$8
Azithromycin	14	$89	$6
Escitalopram	19	$69	$4
Metformin	12	$63	$5

2022: 22 drugs

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Part D drugs prescribed in 2022

Dexilant	11	$3,669	$334
Atorvastatin	85	$1,134	$13
Levothyroxine	52	$921	$18
Losartan	62	$914	$15
Divalproex Sodium Er	12	$693	$58
Amlodipine Besylate	60	$574	$10
Fluoxetine	38	$544	$14
Lisinopril	61	$543	$9
Triamterene-Hydrochlorothiazid	25	$403	$16
Alendronate	25	$333	$13
Escitalopram	26	$302	$12
Metformin Hcl Er	26	$271	$10
Simvastatin	37	$266	$7
Omeprazole	14	$245	$18
Metoprolol	15	$219	$15
Metformin	26	$203	$8
Pravastatin	14	$202	$14
Fluticasone Propionate	11	$187	$17
Sertraline	11	$174	$16
Lorazepam	23	$155	$7
Lisinopril-Hydrochlorothiazide	17	$124	$7
Hydrochlorothiazide	22	$53	$2

2021: 28 drugs

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Part D drugs prescribed in 2021

Levothyroxine	63	$1,257	$20
Losartan	73	$1,238	$17
Atorvastatin	86	$1,229	$14
Ezetimibe	12	$1,101	$92
Amlodipine Besylate	79	$767	$10
Diclofenac	15	$762	$51
Divalproex Sodium Er	13	$750	$58
Lisinopril	73	$682	$9
Metoprolol	24	$665	$28
Potassium Chloride	11	$489	$44
Fluoxetine	24	$458	$19
Simvastatin	35	$385	$11
Triamterene-Hydrochlorothiazid	24	$376	$16
Omeprazole	14	$331	$24
Escitalopram	33	$313	$9
Metformin Hcl Er	23	$312	$14
Gabapentin	14	$277	$20
Pravastatin	15	$266	$18
Fluticasone Propionate	11	$175	$16
Allopurinol	13	$174	$13
Sertraline	11	$171	$16
Alendronate	18	$137	$8
Quetiapine	13	$125	$10
Hydrochlorothiazide	35	$114	$3
Lorazepam	24	$108	$5
Lisinopril-Hydrochlorothiazide	17	$106	$6
Metformin	24	$106	$4
Zolpidem	15	$95	$6

2020: 27 drugs

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Part D drugs prescribed in 2020

Estradiol	12	$2,680	$223
Levothyroxine	69	$1,996	$29
Atorvastatin	68	$1,331	$20
Losartan	61	$1,225	$20
Acetaminophen-Codeine	12	$705	$59
Amlodipine Besylate	69	$689	$10
Divalproex Sodium Er	11	$613	$56
Metoprolol	24	$533	$22
Lisinopril	54	$482	$9
Simvastatin	42	$447	$11
Fluoxetine	15	$371	$25
Warfarin	11	$343	$31
Trazodone	17	$300	$18
Fluticasone Propionate	11	$299	$27
Pravastatin	12	$276	$23
Triamterene-Hydrochlorothiazid	25	$274	$11
Omeprazole	13	$243	$19
Sertraline	12	$223	$19
Allopurinol	11	$191	$17
Metformin Hcl Er	19	$172	$9
Escitalopram	18	$166	$9
Alendronate	20	$151	$8
Lisinopril-Hydrochlorothiazide	15	$126	$8
Hydrochlorothiazide	28	$124	$4
Metformin	12	$100	$8
Lorazepam	13	$73	$6
Quetiapine	11	$34	$3

2019: 27 drugs

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Part D drugs prescribed in 2019

Levothyroxine	69	$1,854	$27
Synthroid	14	$1,481	$106
Valsartan	13	$1,041	$80
Atorvastatin	49	$1,029	$21
Oxybutynin Chloride Er	16	$943	$59
Hydrocodone-Acetaminophen	20	$890	$44
Fluoxetine	18	$822	$46
Losartan	42	$809	$19
Bupropion Xl	11	$682	$62
Metoprolol	20	$632	$32
Diclofenac	12	$626	$52
Lisinopril	47	$532	$11
Acetaminophen-Codeine	15	$460	$31
Simvastatin	43	$415	$10
Amlodipine Besylate	45	$377	$8
Escitalopram	21	$363	$17
Sertraline	15	$359	$24
Trazodone	17	$335	$20
Triamterene-Hydrochlorothiazid	27	$291	$11
Allopurinol	12	$291	$24
Metformin Hcl Er	12	$190	$16
Diazepam	18	$164	$9
Losartan-Hydrochlorothiazide	18	$163	$9
Hydrochlorothiazide	25	$117	$5
Zolpidem	15	$114	$8
Lorazepam	13	$112	$9
Metformin	11	$77	$7

2018: 23 drugs

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Part D drugs prescribed in 2018

Levothyroxine	70	$1,634	$23
Paroxetine Er	12	$1,285	$107
Oxybutynin Chloride Er	19	$1,062	$56
Losartan	46	$917	$20
Hydrocodone-Acetaminophen	20	$815	$41
Bupropion Xl	17	$776	$46
Metoprolol	25	$769	$31
Atorvastatin	39	$751	$19
Acetaminophen-Codeine	12	$469	$39
Amlodipine Besylate	39	$429	$11
Omeprazole	16	$376	$24
Simvastatin	49	$303	$6
Escitalopram	19	$294	$15
Triamterene-Hydrochlorothiazid	22	$262	$12
Lisinopril	25	$249	$10
Trazodone	12	$165	$14
Metformin Hcl Er	13	$155	$12
Lorazepam	19	$121	$6
Zolpidem	14	$115	$8
Metformin	13	$87	$7
Alprazolam	11	$81	$7
Hydrochlorothiazide	17	$75	$4
Azithromycin	11	$58	$5

2017: 21 drugs

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Part D drugs prescribed in 2017

Levothyroxine	49	$1,529	$31
Paroxetine Er	12	$1,420	$118
Oxybutynin Chloride Er	15	$1,265	$84
Atorvastatin	42	$987	$24
Fluoxetine	22	$926	$42
Bupropion Xl	22	$869	$40
Metoprolol	24	$820	$34
Losartan	38	$669	$18
Valsartan	13	$627	$48
Amlodipine Besylate	41	$473	$12
Hydrocodone-Acetaminophen	23	$388	$17
Acetaminophen-Codeine	12	$379	$32
Fluticasone Propionate	14	$349	$25
Triamterene-Hydrochlorothiazid	14	$295	$21
Metformin Hcl Er	13	$178	$14
Lisinopril	20	$147	$7
Simvastatin	17	$131	$8
Diazepam	13	$117	$9
Lorazepam	20	$92	$5
Hydrochlorothiazide	19	$89	$5
Alprazolam	23	$68	$3

2016: 26 drugs

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Part D drugs prescribed in 2016

Valsartan	11	$1,779	$162
Paroxetine Er	13	$1,557	$120
Hydrocodone-Acetaminophen	25	$1,454	$58
Levothyroxine	42	$1,275	$30
Atorvastatin	31	$912	$29
Metoprolol	22	$729	$33
Bupropion Xl	20	$646	$32
Losartan	37	$618	$17
Fluoxetine	20	$548	$27
Acetaminophen-Codeine	15	$499	$33
Zolpidem	18	$457	$25
Synthroid	13	$449	$35
Fluticasone Propionate	18	$442	$25
Triamterene-Hydrochlorothiazid	14	$388	$28
Amlodipine Besylate	35	$381	$11
Metformin Hcl Er	20	$315	$16
Pravastatin	12	$270	$23
Simvastatin	23	$217	$9
Lisinopril	17	$213	$13
Diazepam	21	$151	$7
Hydrochlorothiazide	25	$141	$6
Atenolol	16	$137	$9
Omeprazole	11	$113	$10
Lorazepam	26	$100	$4
Alprazolam	18	$95	$5
Clonazepam	11	$49	$4

2015: 27 drugs

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Part D drugs prescribed in 2015

Valsartan	18	$3,128	$174
Zetia	11	$2,757	$251
Crestor	11	$2,343	$213
Fenofibrate	11	$1,608	$146
Levothyroxine	39	$1,236	$32
Atorvastatin	46	$882	$19
Hydrocodone-Acetaminophen	18	$802	$45
Bupropion Xl	16	$798	$50
Metoprolol	16	$765	$48
Losartan	41	$567	$14
Fluticasone Propionate	20	$486	$24
Triamterene-Hydrochlorothiazid	19	$453	$24
Synthroid	12	$435	$36
Lansoprazole	13	$349	$27
Metformin Hcl Er	17	$272	$16
Amlodipine Besylate	33	$239	$7
Hydrochlorothiazide	30	$171	$6
Alendronate	13	$151	$12
Simvastatin	20	$146	$7
Glimepiride	11	$142	$13
Atenolol	16	$140	$9
Zolpidem	13	$105	$8
Benazepril	12	$101	$8
Lisinopril	17	$89	$5
Metformin	12	$83	$7
Alprazolam	17	$82	$5
Diazepam	16	$81	$5

2014: 28 drugs

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Part D drugs prescribed in 2014

Zetia	13	$2,692	$207
Atorvastatin	51	$1,334	$26
Bupropion Xl	14	$1,043	$75
Levothyroxine	34	$966	$28
Fluticasone Propionate	18	$684	$38
Losartan	25	$607	$24
Hydrocodone-Acetaminophen	24	$561	$23
Metoprolol	12	$553	$46
Simvastatin	40	$407	$10
Metformin Hcl Er	23	$331	$14
Pioglitazone	12	$322	$27
Triamterene-Hydrochlorothiazid	17	$315	$19
Synthroid	11	$307	$28
Amlodipine Besylate	44	$304	$7
Benazepril	18	$256	$14
Lisinopril	37	$251	$7
Alendronate	14	$214	$15
Tamsulosin	12	$194	$16
Hydrochlorothiazide	34	$179	$5
Acetaminophen-Codeine	17	$175	$10
Omeprazole	11	$169	$15
Zolpidem	18	$158	$9
Trazodone	15	$128	$9
Glimepiride	12	$124	$10
Hydroxyzine	11	$124	$11
Tramadol	12	$74	$6
Diazepam	11	$46	$4
Ibuprofen	11	$37	$3

2013: 29 drugs

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Part D drugs prescribed in 2013

Diovan	22	$5,182	$236
Zetia	12	$2,079	$173
Fentanyl	11	$1,600	$145
Atorvastatin	39	$1,361	$35
Bupropion Xl	17	$941	$55
Fluticasone Propionate	16	$837	$52
Metoprolol	16	$667	$42
Hydrocodone-Acetaminophen	42	$578	$14
Levothyroxine	31	$516	$17
Losartan	20	$481	$24
Omeprazole	11	$466	$42
Simvastatin	34	$460	$14
Sumatriptan	12	$418	$35
Amlodipine Besylate	36	$366	$10
Metformin Hcl Er	16	$310	$19
Zolpidem	51	$305	$6
Alendronate	14	$268	$19
Tamsulosin	11	$205	$19
Benazepril	17	$186	$11
Synthroid	12	$151	$13
Lovastatin	11	$150	$14
Lisinopril	24	$148	$6
Triamterene-Hctz	11	$141	$13
Acetaminophen-Codeine	12	$136	$11
Hydrochlorothiazide	25	$131	$5
Citalopram Hbr	15	$123	$8
Trazodone	18	$100	$6
Diazepam	20	$100	$5
Tramadol	13	$73	$6

Money from drug and device companies

$121 in 2019

A payment is not proof that care is biased.

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Payments by company

Boston Scientific	Watchman	$121	1 payment Meals for Watchman · 2019-01-10 · $121

See the published payment

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Every published payment

Boston Scientific	Meals · 2019-01-10	Watchman	$121

Professional record

NPI: 1740356716
Licence: CA A66585California A66585: Current · expires 2028-08-31
Trained: University of Southern California Keck School of Medicine, 1997
Group: Sutter Bay Medical Foundation
Video visits: Lists video visits
Gender: Female

More record details

Sole proprietor: No
Taxonomy: Family medicine (207Q00000X)
Mailing address: 325 Distel Cir, Los Altos, CA, 94022
NPI first listed: 2006-11-28
NPI last updated: 2020-03-04
NPI record certified: 2020-03-04

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