Michael Louie, PA | UniHealth

Offices

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

Looking this up.

Hospitals listed: Stanford Health Care. That is not proof they admit you there this week.

Plan participation

Not verified

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

California Medical Board record

Licence C51994 · Cancelled

Licence status: Cancelled · since 2005 · University of Madras, Chingleput Medical College.

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.

Hospitals they work in

1 hospital

These rate the hospital, not this clinician. Most measures at most hospitals are no different from the national rate.

Stanford Health CareStanford, CAAcute Care Hospital · Voluntary non-profit - Private · Has an emergency departmentPart of Stanford Health Care, which runs 3 hospitalsHome of Stanford Cancer Institute, a National Cancer Institute designated comprehensive cancer centrePatients rate it 4 of 5 · 83% would definitely recommend it
Overall rating: 5 of 5 starsWorse than the national rate — Perioperative pulmonary embolism or deep vein thrombosis rate: 5.31 (4.24 to 6.37) · 8,661 cases, Jul 2022 – Jun 2024Worse than the national rate — Rate of inpatient admissions for patients receiving outpatient chemotherapy: 14.1 (12.7 to 15.7) · 2,191 cases, Jan 2024 – Dec 2024Better than the national rate — Postoperative respiratory failure rate: 4.08 (1.95 to 6.21) · 5,296 cases, Jul 2022 – Jun 2024Better than the national rate — Catheter Associated Urinary Tract Infections (ICU + select Wards): 0.317, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.446, Oct 2024 – Sep 2025Better than the national rate — SSI - Colon Surgery: 0.241, Oct 2024 – Sep 2025Better than the national rate — Ratio of unplanned hospital visits after hospital outpatient surgery: 0.7 (0.6 to 0.9) · 3,348 cases, Jan 2024 – Dec 2024

See every measure and the patient survey for Stanford Health Care

Behind the star rating — Deaths: 5 better, 3 the same, 0 worse of 8 measures. Safety: 3 better, 5 the same, 0 worse of 8 measures. Readmissions: 2 better, 5 the same, 4 worse of 11 measures. The star rating is worked out from an earlier period than the measures below, so the two can disagree.

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Every scored measure at Stanford Health Care

Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths	5.31 (4.24 to 6.37) · 8,661 cases	Worse	Jul 2022 – Jun 2024
Rate of inpatient admissions for patients receiving outpatient chemotherapyUnplanned return visits	14.1 (12.7 to 15.7) · 2,191 cases	Worse	Jan 2024 – Dec 2024
Postoperative respiratory failure rateComplications and deaths	4.08 (1.95 to 6.21) · 5,296 cases	Better	Jul 2022 – Jun 2024
Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections	0.317	Better	Oct 2024 – Sep 2025
Clostridium Difficile (C.Diff)Infections	0.446	Better	Oct 2024 – Sep 2025
SSI - Colon SurgeryInfections	0.241	Better	Oct 2024 – Sep 2025
Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits	0.7 (0.6 to 0.9) · 3,348 cases	Better	Jan 2024 – Dec 2024
Abdominopelvic accidental puncture or laceration rateComplications and deaths	1.06 (0.45 to 1.67) · 5,374 cases	No different	Jul 2022 – Jun 2024
CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths	0.86 (0.72 to 1)	No different	Jul 2022 – Jun 2024
Death rate among surgical inpatients with serious treatable complicationsComplications and deaths	166.09 (137.88 to 194.3) · 470 cases	No different	Jul 2022 – Jun 2024
Death rate for CABG surgery patientsComplications and deaths	1.1 · 192 cases	None	Jul 2022 – Jun 2025
Death rate for COPD patientsComplications and deaths	6.4 · 146 cases	None	Jul 2022 – Jun 2025
Death rate for heart attack patientsComplications and deaths	9.7 · 253 cases	None	Jul 2022 – Jun 2025
Death rate for heart failure patientsComplications and deaths	6.3 · 880 cases	None	Jul 2022 – Jun 2025
Death rate for pneumonia patientsComplications and deaths	10.3 · 935 cases	None	Jul 2022 – Jun 2025
Death rate for stroke patientsComplications and deaths	8.7 · 501 cases	None	Jul 2023 – Jun 2025
Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths	2.1 · 7,730 cases	None	Jul 2024 – Jun 2025
Iatrogenic pneumothorax rateComplications and deaths	0.13 (0 to 0.27) · 20,799 cases	No different	Jul 2022 – Jun 2024
In-hospital fall-associated fracture rateComplications and deaths	0.28 (0.14 to 0.43) · 23,182 cases	No different	Jul 2022 – Jun 2024
Postoperative acute kidney injury requiring dialysis rateComplications and deaths	0.94 (0.2 to 1.68) · 5,694 cases	No different	Jul 2022 – Jun 2024
Postoperative hemorrhage or hematoma rateComplications and deaths	2.36 (1.54 to 3.19) · 7,846 cases	No different	Jul 2022 – Jun 2024
Postoperative sepsis rateComplications and deaths	5.2 (3.76 to 6.64) · 5,603 cases	No different	Jul 2022 – Jun 2024
Postoperative wound dehiscence rateComplications and deaths	1.38 (0.23 to 2.53) · 2,211 cases	No different	Jul 2022 – Jun 2024
Pressure ulcer rateComplications and deaths	0.52 (0.21 to 0.83) · 19,915 cases	No different	Jul 2022 – Jun 2024
Rate of complications for hip/knee replacement patientsComplications and deaths	3.6 · 416 cases	None	Apr 2023 – Mar 2025
Central Line Associated Bloodstream Infection (ICU + select Wards)Infections	0.869	No different	Oct 2024 – Sep 2025
MRSA BacteremiaInfections	0.857	No different	Oct 2024 – Sep 2025
SSI - Abdominal HysterectomyInfections	0.368	No different	Oct 2024 – Sep 2025
Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits	16.2 · 247 cases	None	Jul 2023 – Jun 2025
Heart failure (HF) 30-Day Readmission RateUnplanned return visits	20.5 · 1,021 cases	None	Jul 2023 – Jun 2025
Hospital return days for heart attack patientsUnplanned return visits	47.8 · 258 cases	None	Jul 2022 – Jun 2025
Hospital return days for heart failure patientsUnplanned return visits	-1.6 · 990 cases	None	Jul 2022 – Jun 2025
Hospital return days for pneumonia patientsUnplanned return visits	20.8 · 976 cases	None	Jul 2022 – Jun 2025
Pneumonia (PN) 30-Day Readmission RateUnplanned return visits	16.5 · 959 cases	None	Jul 2023 – Jun 2025
Rate of emergency department (ED) visits for patients receiving outpatient chemotherapyUnplanned return visits	5.2 (4.4 to 6.2) · 2,191 cases	No different	Jan 2024 – Dec 2024
Rate of readmission after hip/knee replacementUnplanned return visits	5.1 · 425 cases	None	Jul 2023 – Jun 2025
Rate of readmission for CABGUnplanned return visits	9.6 · 158 cases	None	Jul 2023 – Jun 2025
Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits	19.6 · 183 cases	None	Jul 2023 – Jun 2025
Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits	12.7 (10.4 to 15.4) · 4,578 cases	No different	Jan 2022 – Dec 2024

What patients said (6,810 patients answered, 25% of those asked)

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Patient survey stars by topic at Stanford Health Care

Cleanliness	4
Nurse communication	4
Doctor communication	4
Communication about medicines	3
Discharge information	4
Overall hospital rating	4
Quietness	2
Recommend hospital	5

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Share of patients giving the best answer at Stanford Health Care

Room was "always" clean	75%
Nurses "always" communicated well	82%
Doctors "always" communicated well	81%
Staff "always" explained	63%
Yes, staff "did" give patients this information	89%
Yes, staff "did" give patients information about help after discharge	89%
Doctors "always" explained things so they could understand	76%
Doctors "always" listened carefully	80%
Doctors "always" treated them with courtesy and respect	87%
Patients who gave a rating of "9" or "10" (high)	79%
Staff "always" explained new medications	76%
Nurses "always" explained things so they could understand	77%
Nurses "always" listened carefully	79%
Nurses "always" treated them with courtesy and respect	88%
"Always" quiet at night	53%
"YES", patients would definitely recommend the hospital	83%
Staff "always" explained possible side effects	50%
Yes, staff "did" give patients information about possible symptoms	90%

Original Medicare doctor bills

$31,630

Medicare paid this office $31,630 for 285 people.

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

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Largest Original Medicare bills

New patient visit (60+ min)	37	$6,305	$170
Long return visit (40+ min)	39	$6,042	$141
Initial hospital care with straightforward or low level of medical decision making, per day at least 40 minutes	69	$4,534	$62
Initial hospital care with straightforward or low-level medical decision making at least 55 minutes	40	$3,959	$99
New patient visit (45+ min)	22	$2,851	$130

See all 8 services

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Every Original Medicare service billed

New patient visit (60+ min)	37	$6,305	$170
Long return visit (40+ min)	39	$6,042	$141
Initial hospital care with straightforward or low level of medical decision making, per day at least 40 minutes	69	$4,534	$62
Initial hospital care with straightforward or low-level medical decision making at least 55 minutes	40	$3,959	$99
New patient visit (45+ min)	22	$2,851	$130
Return visit (30+ min)	23	$2,326	$101
Subsequent hospital care with straightforward or low level of medical decision making, per day at least 25 minutes	41	$1,685	$37
Telephone medical discussion with physician, 21-30 minutes	16	$1,554	$91

Who their Medicare patients are

285 Original Medicare patients in 2024. Average age 72 · Under 65 12% · 85 and older 10% · Women 40% · Also on Medicaid 33% · Health risk score 2.75. Sicker patients than 9 in 10 peers; the typical physician assistant clinician is at 1.31.

Conditions among them: High blood pressure 75% · Chronic kidney disease 41% · Diabetes 38% · Coronary heart disease 37% · Cancer 32% · Heart failure 28% · Atrial fibrillation 28% · Depression 24% · COPD 18% · Dementia 15% · Stroke 13%.

The office billed $191,319, Medicare allowed $40,784 and paid $31,630; for 335 services of 19 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	285	335	72	2.75	$191,319	$31,630
2023	191	208	76	1.82	$80,287	$18,549
2022	201	226	77	1.46	$50,112	$19,974
2021	240	276	76	1.66	$68,877	$24,959
2020	183	215	77	2.38	$59,523	$17,453
2019	76	87	78	2.58	$42,937	$9,288
2018	71	78	76	2.88	$22,760	$6,421
2017	42	48	73	2.88	$13,173	$2,919

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: 6 services

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Original Medicare services billed in 2023

Telephone medical discussion with physician, 21-30 minutes	46	$4,405	$96
New patient visit (30+ min)	40	$3,233	$81
Long return visit (40+ min)	18	$2,035	$113
Return visit (30+ min)	20	$1,867	$93
Short return visit (20+ min)	15	$1,191	$66
Subsequent hospital care with straightforward or low level of medical decision making, per day at least 25 minutes	12	$499	$38

2022: 5 services

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Original Medicare services billed in 2022

Telephone medical discussion with physician, 21-30 minutes	76	$7,620	$100
New patient visit (30+ min)	52	$4,765	$92
Telephone medical discussion with physician, 11-20 minutes	38	$2,782	$71
Short return visit (20+ min)	19	$1,514	$76
Office for the evaluation and management of established patient that may not require presence of healthcare professional	14	$279	$20

2021: 6 services

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Original Medicare services billed in 2021

Telephone medical discussion with physician, 21-30 minutes	62	$6,671	$108
New patient visit (30+ min)	60	$5,425	$90
Short return visit (20+ min)	46	$3,665	$75
Telephone medical discussion with physician, 11-20 minutes	48	$3,626	$74
Return visit (30+ min)	20	$2,166	$108
Office for the evaluation and management of established patient that may not require presence of healthcare professional	16	$283	$18

2020: 6 services

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Original Medicare services billed in 2020

Replacement of stomach stoma tube	13	$4,274	$204
Short return visit (20+ min)	55	$3,916	$63
New patient visit (30+ min)	28	$2,531	$90
Telephone medical discussion with physician, 11-20 minutes	35	$2,345	$63
Telephone medical discussion with physician, 21-30 minutes	14	$1,371	$91
Telephone medical discussion with physician, 5-10 minutes	29	$1,136	$39

2019: 2 services

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Original Medicare services billed in 2019

Short return visit (20+ min)	44	$2,761	$60
New patient visit (30+ min)	14	$1,214	$87

2018: 1 service

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Original Medicare services billed in 2018

Short return visit (20+ min)	19	$1,180	$59

Drugs they prescribed that Part D paid

$2,467

Pharmacies billed $2,467 in 2024.

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

Opioids were 18% of their Part D prescriptions (16 of 88) in 2024. Above the middle of the specialty; the typical physician assistant clinician is at 1%.

87 generic and fewer than 11 brand-name prescriptions · $2,467 in drug cost.

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

Methylprednisolone	18	$247	$13
Ondansetron Odt	16	$146	$9
Pantoprazole	15	$145	$7
Oxycodone	14	$86	$6

Year by year

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Part D prescribing by year

2024	88	32	18% (16)	None	$2,467
2023	47	20	40% (19)	0%	$514
2022	17	14	71% (12)	0%	$148
2021	36	22	36% (13)	0%	$599
2020	51	29	31% (16)	None	$2,624
2019	63	38	33% (21)	None	$6,335
2018	149	50	12% (18)	None	$19,323
2017	858	104	13% (113)	None	$91,469
2016	951	136	14% (129)	None	$135,183
2015	503	79	9% (47)	None	$30,988

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

See the drugs prescribed each year

2022: 1 drug

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Part D drugs prescribed in 2022

Hydrocodone-Acetaminophen	11	$55	$5

2020: 1 drug

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Part D drugs prescribed in 2020

Hydrocodone-Acetaminophen	11	$68	$6

2019: 1 drug

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Part D drugs prescribed in 2019

Hydrocodone-Acetaminophen	15	$150	$10

2018: 2 drugs

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Part D drugs prescribed in 2018

Montelukast	11	$139	$13
Hydrocodone-Acetaminophen	11	$83	$8

2017: 27 drugs

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Part D drugs prescribed in 2017

Lidocaine	14	$10,579	$756
Januvia	12	$7,413	$618
Dexilant	18	$4,588	$255
Uloric	15	$4,525	$302
Hydrocodone-Acetaminophen	70	$1,436	$21
Proair Hfa	16	$896	$56
Montelukast	29	$529	$18
Atorvastatin	21	$409	$19
Fluticasone Propionate	17	$399	$23
Oxycodone-Acetaminophen	14	$381	$27
Gabapentin	17	$374	$22
Bupropion Hcl Sr	12	$286	$24
Amlodipine Besylate	18	$205	$11
Tramadol	20	$202	$10
Triamterene-Hydrochlorothiazid	12	$197	$16
Losartan	17	$181	$11
Pantoprazole	18	$170	$9
Simvastatin	31	$152	$5
Lisinopril	19	$150	$8
Metformin	14	$127	$9
Ranitidine	16	$114	$7
Naproxen	11	$100	$9
Alprazolam	16	$92	$6
Lisinopril-Hydrochlorothiazide	12	$89	$7
Atenolol	11	$76	$7
Hydrochlorothiazide	17	$74	$4
Glipizide	11	$41	$4

2016: 25 drugs

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Part D drugs prescribed in 2016

Lidocaine	11	$9,328	$848
Uloric	11	$3,118	$283
Hydrocodone-Acetaminophen	95	$2,060	$22
Proair Hfa	18	$970	$54
Gabapentin	24	$393	$16
Atorvastatin	18	$377	$21
Fluticasone Propionate	26	$350	$13
Nystatin	12	$262	$22
Montelukast	23	$237	$10
Diltiazem Er	15	$232	$15
Losartan	25	$210	$8
Metformin	32	$210	$7
Pantoprazole	27	$191	$7
Simvastatin	39	$191	$5
Losartan-Hydrochlorothiazide	13	$180	$14
Omeprazole	13	$173	$13
Amlodipine Besylate	25	$153	$6
Alprazolam	19	$136	$7
Metoprolol	19	$120	$6
Lisinopril	23	$117	$5
Naproxen	13	$112	$9
Lisinopril-Hydrochlorothiazide	16	$92	$6
Glipizide	11	$82	$7
Hydrochlorothiazide	16	$68	$4
Tramadol	14	$50	$4

2015: 11 drugs

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Part D drugs prescribed in 2015

Hydrocodone-Acetaminophen	25	$526	$21
Diltiazem Er	11	$213	$19
Montelukast	12	$204	$17
Pantoprazole	17	$115	$7
Metformin	22	$104	$5
Omeprazole	12	$68	$6
Amlodipine Besylate	23	$61	$3
Simvastatin	15	$58	$4
Glipizide	11	$53	$5
Tramadol	14	$49	$3
Lisinopril	11	$29	$3

Money from drug and device companies

$144 in 2025

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Industry payments by year

2025	1	1	None	$144
2022	1	1	None	$100

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

Janssen Biotech	Tremfya	$144	1 payment Meals for Tremfya · 2025-07-23 · $144

See the published payment

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Every published payment

Janssen Biotech	Meals · 2025-07-23	Tremfya	$144

See earlier years (2022)

2022: $100

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Payments by company in 2022

Abbott Laboratories	Mitraclip	$100	1 payment Meals for Mitraclip · 2022-06-01 · $100

Professional record

NPI: 1356747067
Licence: CA 51994California C51994: Cancelled
Group: Stanford Health Care
Video visits: Lists video visits
Gender: Male

More record details

Sole proprietor: No
Taxonomy: Physician assistant (363A00000X)
Mailing address: 300 Pasteur Dr, Stanford, CA, 94305
NPI first listed: 2014-11-06
NPI last updated: 2023-07-25
NPI record certified: 2023-07-25

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

Extra NPI addresses: 701 E El Camino Real, Mountain View, CA, 94040 · 7405 Castano Way, Sacramento, CA, 95831