Jeffrey Duke Chien, MD

Offices

1 location · Emergency Physicians Associates San Jose PC · 131 clinicians in this group

Looking this up.

Hospitals listed: Santa Clara Valley Medical Center. 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 Dr. Chien’s office at (408) 947-2500 to ask if they take your plan before you enroll.

California Medical Board record

Licence A134764 · Current

Licensed to practise in California · since 2015 · expires 2026-11-30 · State University of New York at Stony Brook Health Sciences Center.

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.

Santa Clara Valley Medical CenterSan Jose, CAAcute Care Hospital · Government - Local · Has an emergency department · Birthing-friendlyPart of Santa Clara Valley Health and Hospital System, which runs 3 hospitalsPatients rate it 3 of 5 · 70% would definitely recommend it
Overall rating: 2 of 5 starsWorse than the national rate — SSI - Colon Surgery: 2.572, Oct 2024 – Sep 2025Better than the national rate — Central Line Associated Bloodstream Infection (ICU + select Wards): 0.563, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.256, Oct 2024 – Sep 2025Better than the national rate — MRSA Bacteremia: 0.369, Oct 2024 – Sep 2025

See every measure and the patient survey for Santa Clara Valley Medical Center

Behind the star rating — Deaths: 2 better, 6 the same, 0 worse of 8 measures. Safety: 2 better, 5 the same, 1 worse of 8 measures. Readmissions: 0 better, 10 the same, 1 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 Santa Clara Valley Medical Center

SSI - Colon SurgeryInfections	2.572	Worse	Oct 2024 – Sep 2025
Central Line Associated Bloodstream Infection (ICU + select Wards)Infections	0.563	Better	Oct 2024 – Sep 2025
Clostridium Difficile (C.Diff)Infections	0.256	Better	Oct 2024 – Sep 2025
MRSA BacteremiaInfections	0.369	Better	Oct 2024 – Sep 2025
Abdominopelvic accidental puncture or laceration rateComplications and deaths	1.25 (0.3 to 2.2) · 1,535 cases	No different	Jul 2022 – Jun 2024
CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths	1.07 (0.76 to 1.38)	No different	Jul 2022 – Jun 2024
Death rate among surgical inpatients with serious treatable complicationsComplications and deaths	214.59 (167.38 to 261.8) · 108 cases	No different	Jul 2022 – Jun 2024
Death rate for CABG surgery patientsComplications and deaths	2.8 · 41 cases	None	Jul 2022 – Jun 2025
Death rate for COPD patientsComplications and deaths	6 · 141 cases	None	Jul 2022 – Jun 2025
Death rate for heart attack patientsComplications and deaths	10.2 · 124 cases	None	Jul 2022 – Jun 2025
Death rate for heart failure patientsComplications and deaths	8.3 · 501 cases	None	Jul 2022 – Jun 2025
Death rate for pneumonia patientsComplications and deaths	14.9 · 653 cases	None	Jul 2022 – Jun 2025
Death rate for stroke patientsComplications and deaths	10.1 · 348 cases	None	Jul 2023 – Jun 2025
Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths	3 · 4,502 cases	None	Jul 2024 – Jun 2025
Iatrogenic pneumothorax rateComplications and deaths	0.24 (0.04 to 0.43) · 9,014 cases	No different	Jul 2022 – Jun 2024
In-hospital fall-associated fracture rateComplications and deaths	0.34 (0.15 to 0.52) · 9,216 cases	No different	Jul 2022 – Jun 2024
Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths	4.54 (2.51 to 6.58) · 1,421 cases	No different	Jul 2022 – Jun 2024
Postoperative acute kidney injury requiring dialysis rateComplications and deaths	1.54 (0 to 3.2) · 288 cases	No different	Jul 2022 – Jun 2024
Postoperative hemorrhage or hematoma rateComplications and deaths	2.11 (0.66 to 3.56) · 1,446 cases	No different	Jul 2022 – Jun 2024
Postoperative respiratory failure rateComplications and deaths	11.61 (4.09 to 19.14) · 294 cases	No different	Jul 2022 – Jun 2024
Postoperative sepsis rateComplications and deaths	7.29 (3.39 to 11.2) · 299 cases	No different	Jul 2022 – Jun 2024
Postoperative wound dehiscence rateComplications and deaths	1.9 (0.45 to 3.36) · 333 cases	No different	Jul 2022 – Jun 2024
Pressure ulcer rateComplications and deaths	0.23 (0 to 0.78) · 7,538 cases	No different	Jul 2022 – Jun 2024
Rate of complications for hip/knee replacement patientsComplications and deaths	5.4 · 94 cases	None	Apr 2023 – Mar 2025
Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections	0.735	No different	Oct 2024 – Sep 2025
SSI - Abdominal HysterectomyInfections	2.573	No different	Oct 2024 – Sep 2025
Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits	14.6 · 185 cases	None	Jul 2023 – Jun 2025
Heart failure (HF) 30-Day Readmission RateUnplanned return visits	22.1 · 951 cases	None	Jul 2023 – Jun 2025
Hospital return days for heart attack patientsUnplanned return visits	56.3 · 128 cases	None	Jul 2022 – Jun 2025
Hospital return days for heart failure patientsUnplanned return visits	6.4 · 644 cases	None	Jul 2022 – Jun 2025
Hospital return days for pneumonia patientsUnplanned return visits	1.3 · 699 cases	None	Jul 2022 – Jun 2025
Pneumonia (PN) 30-Day Readmission RateUnplanned return visits	16.3 · 921 cases	None	Jul 2023 – Jun 2025
Rate of emergency department (ED) visits for patients receiving outpatient chemotherapyUnplanned return visits	5.7 (3.9 to 8.1) · 226 cases	No different	Jan 2024 – Dec 2024
Rate of inpatient admissions for patients receiving outpatient chemotherapyUnplanned return visits	12.6 (9.4 to 16.5) · 226 cases	No different	Jan 2024 – Dec 2024
Rate of readmission after hip/knee replacementUnplanned return visits	5.4 · 94 cases	None	Jul 2023 – Jun 2025
Rate of readmission for CABGUnplanned return visits	11.4 · 54 cases	None	Jul 2023 – Jun 2025
Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits	20.3 · 242 cases	None	Jul 2023 – Jun 2025
Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits	13.2 (9.9 to 17.4) · 702 cases	No different	Jan 2022 – Dec 2024
Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits	1 (0.7 to 1.4) · 195 cases	No different	Jan 2024 – Dec 2024

What patients said (4,032 patients answered, 29% of those asked)

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Patient survey stars by topic at Santa Clara Valley Medical Center

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

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Share of patients giving the best answer at Santa Clara Valley Medical Center

Room was "always" clean	70%
Nurses "always" communicated well	73%
Doctors "always" communicated well	76%
Staff "always" explained	57%
Yes, staff "did" give patients this information	82%
Yes, staff "did" give patients information about help after discharge	82%
Doctors "always" explained things so they could understand	71%
Doctors "always" listened carefully	74%
Doctors "always" treated them with courtesy and respect	82%
Patients who gave a rating of "9" or "10" (high)	67%
Staff "always" explained new medications	71%
Nurses "always" explained things so they could understand	71%
Nurses "always" listened carefully	69%
Nurses "always" treated them with courtesy and respect	80%
"Always" quiet at night	43%
"YES", patients would definitely recommend the hospital	70%
Staff "always" explained possible side effects	44%
Yes, staff "did" give patients information about possible symptoms	83%

Original Medicare doctor bills

$42,707

Medicare paid this office $42,707 for 283 people.

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

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Largest Original Medicare bills

Emergency department visit with high level of medical decision making	135	$18,633	$135
Critical care, first 30-74 minutes	80	$14,497	$181
Emergency department visit with moderate level of medical decision making	61	$5,308	$83
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only	147	$1,080	$7
X-ray of chest, 1 view	12	$90	$8

Who their Medicare patients are

283 Original Medicare patients in 2024. Average age 71 · Under 65 21% · 85 and older 16% · Women 52% · Also on Medicaid 76% · Health risk score 2.28. Above the middle of the specialty; the typical emergency medicine clinician is at 2.01.

Conditions among them: High blood pressure 75% · Diabetes 50% · Heart failure 37% · Coronary heart disease 32% · Chronic kidney disease 31% · Atrial fibrillation 31% · Depression 28% · Dementia 23% · COPD 20% · Stroke 16% · Cancer 11%.

The office billed $364,540, Medicare allowed $58,036 and paid $42,707; for 497 services of 31 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	283	497	71	2.28	$364,540	$42,707
2023	378	692	71	2.64	$382,985	$57,657
2022	335	611	71	2.14	$246,117	$55,571
2021	204	259	70	1.90	$286,747	$34,182
2020	224	273	67	2.80	$310,254	$34,237
2019	517	814	69	2.32	$716,145	$71,835
2018	188	300	68	2.45	$254,576	$27,734
2017	318	386	73	2.39	$266,066	$46,930
2016	441	518	73	2.18	$358,660	$65,465
2015	135	153	71	2.13	$174,279	$19,640

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

Emergency department visit with high level of medical decision making	185	$26,698	$136
Critical care, first 30-74 minutes	104	$18,839	$179
Emergency department visit with moderate level of medical decision making	86	$8,600	$92
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only	197	$1,514	$7
Emergency department visit with low level of medical decision making	11	$681	$62
X-ray of chest, 1 view	24	$181	$8

2022: 6 services

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Original Medicare services billed in 2022

Emergency department visit with high level of medical decision making	179	$30,706	$168
Critical care, first 30-74 minutes	53	$12,292	$223
Emergency department visit with moderate level of medical decision making	56	$6,059	$106
Emergency department visit with low level of medical decision making	49	$2,881	$59
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only	191	$1,497	$7
X-ray of chest, 1 view	20	$157	$8

2021: 5 services

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Original Medicare services billed in 2021

Emergency department visit with high level of medical decision making	106	$17,782	$168
Critical care, first 30-74 minutes	31	$7,318	$236
Emergency department visit with moderate level of medical decision making	50	$5,190	$102
Emergency department visit with low level of medical decision making	19	$1,032	$54
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only	18	$137	$8

2020: 5 services

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Original Medicare services billed in 2020

Emergency department visit with high level of medical decision making	109	$17,101	$157
Critical care, first 30-74 minutes	38	$9,343	$234
Emergency department visit with moderate level of medical decision making	51	$5,052	$95
Emergency department visit with low level of medical decision making	20	$1,004	$50
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only	23	$175	$7

2019: 6 services

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Original Medicare services billed in 2019

Emergency department visit with high level of medical decision making	279	$41,142	$140
Emergency department visit with moderate level of medical decision making	127	$10,954	$86
Critical care, first 30-74 minutes	50	$10,025	$197
Emergency department visit with low level of medical decision making	67	$3,089	$44
Emergent insertion of breathing tube into windpipe using an endoscope	14	$1,621	$116
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only	186	$1,542	$8

2018: 5 services

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Original Medicare services billed in 2018

Emergency department visit with high level of medical decision making	115	$17,031	$146
Emergency department visit with moderate level of medical decision making	36	$3,637	$101
Critical care, first 30-74 minutes	14	$2,744	$196
Emergency department visit with low level of medical decision making	23	$1,334	$53
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only	75	$615	$7

2017: 7 services

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Original Medicare services billed in 2017

Emergency department visit with high level of medical decision making	149	$21,509	$143
Critical care, first 30-74 minutes	66	$12,862	$192
Emergency department visit with moderate level of medical decision making	47	$4,046	$86
Initial hospital observation care per day, typically 70 minutes	16	$2,389	$149
Initial hospital observation care per day, typically 30 minutes	19	$1,473	$78
Emergency department visit with low level of medical decision making	15	$703	$47
Ultrasound of heart, follow-up	17	$396	$23

2016: 7 services

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Original Medicare services billed in 2016

Emergency department visit with high level of medical decision making	196	$28,929	$145
Critical care, first 30-74 minutes	85	$16,758	$195
Emergency department visit with moderate level of medical decision making	89	$8,817	$97
Initial hospital observation care per day, typically 70 minutes	19	$3,139	$165
Emergency department visit with low level of medical decision making	22	$1,226	$51
Initial hospital observation care per day, typically 30 minutes	15	$1,149	$77
Hospital observation care on day of discharge	15	$946	$63

2015: 4 services

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Original Medicare services billed in 2015

Emergency department visit with high level of medical decision making	56	$8,366	$149
Critical care, first 30-74 minutes	33	$6,497	$197
Emergency department visit with moderate level of medical decision making	23	$2,332	$101
Emergency department visit with low level of medical decision making	12	$628	$52

Medicaid work

$72,298 in 2024

Medicaid paid $72,298 for 2,449 billed services this clinician did in 2024, up to 110 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

EMERGENCY DEPARTMENT VISIT HIGH MDM	670	$30,063
EMERGENCY DEPT VISIT MOD MDM	837	$25,164
Critical care, evaluation and management of the critically ill or critically injured patient; first 30-74 minutes	175	$8,422
Service	167	$6,253
Electrocardiogram, routine ECG with at least 12 leads; interpretation and report only	456	$1,782
EMERGENCY DEPT VISIT LOW MDM	20	$219
Blood count; complete (CBC), automated (Hgb, Hct, RBC, WBC and platelet count) and automated differential WBC count	20	$150
ELECTROLYTE PANEL	14	$103
Service	35	$59
HEPATIC FUNCTION PANEL	13	$51
Blood glucose (sugar) level	14	$26
Creatinine; blood	14	$6

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Medicaid work by year

2024	2,449	13	110	$72,298
2023	4,916	17	119	$112,650
2022	2,100	12	96	$60,960
2021	924	9	75	$37,956
2020	929	8	55	$32,624
2019	2,537	11	85	$61,817
2018	2,722	9	78	$73,148

See the largest Medicaid services in earlier years

2023

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Largest Medicaid services in 2023

EMERGENCY DEPARTMENT VISIT HIGH MDM	906	$38,140
EMERGENCY DEPT VISIT MOD MDM	1,194	$38,105
Service	403	$15,072
Critical care, evaluation and management of the critically ill or critically injured patient; first 30-74 minutes	215	$11,307
Electrocardiogram, routine ECG with at least 12 leads; interpretation and report only	602	$2,496
Blood count; complete (CBC), automated (Hgb, Hct, RBC, WBC and platelet count) and automated differential WBC count	246	$1,967
EMERGENCY DEPT VISIT LOW MDM	97	$1,642
ELECTROLYTE PANEL	174	$1,307
Service	288	$877
Urinalysis, by dip stick or tablet reagent for bilirubin, glucose, hemoglobin, ketones, leukocytes, nitrite, pH, protein, specific gravity, urobilinogen, any number of these constituents; automated, with microscopy	157	$551
ASSAY OF LIPASE	41	$313
Electrocardiogram, routine ECG with at least 12 leads; tracing only, without interpretation and report	14	$229

2022

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Largest Medicaid services in 2022

EMERGENCY DEPARTMENT VISIT HIGH MDM	451	$19,188
EMERGENCY DEPT VISIT LOW MDM	859	$18,766
EMERGENCY DEPT VISIT MOD MDM	436	$15,137
Service	156	$5,751
Electrocardiogram, routine ECG with at least 12 leads; interpretation and report only	104	$1,058
Infectious agent detection by nucleic acid (DNA or RNA); severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) (coronavirus disease [COVID-19]), amplified probe technique	15	$770
Blood count; complete (CBC), automated (Hgb, Hct, RBC, WBC and platelet count) and automated differential WBC count	15	$128
ELECTROLYTE PANEL	12	$91
Service	16	$38
Blood glucose (sugar) level	12	$16
Creatinine; blood	12	$15
Urea nitrogen; quantitative	12	$3

2021

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Largest Medicaid services in 2021

EMERGENCY DEPARTMENT VISIT HIGH MDM	343	$19,013
EMERGENCY DEPT VISIT MOD MDM	351	$12,327
EMERGENCY DEPT VISIT LOW MDM	101	$2,322
Critical care, evaluation and management of the critically ill or critically injured patient; first 30-74 minutes	28	$2,211
Service	51	$1,941
ELECTROLYTE PANEL	12	$95
Creatinine; blood	12	$24
Blood glucose (sugar) level	13	$20
Urea nitrogen; quantitative	13	$3

2020

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Largest Medicaid services in 2020

EMERGENCY DEPARTMENT VISIT HIGH MDM	311	$12,498
EMERGENCY DEPT VISIT MOD MDM	377	$12,414
Critical care, evaluation and management of the critically ill or critically injured patient; first 30-74 minutes	32	$2,709
EMERGENCY DEPT VISIT LOW MDM	98	$1,822
Service	16	$1,439
Service	28	$1,048
Electrocardiogram, routine ECG with at least 12 leads; interpretation and report only	50	$365
Return visit (30+ min)	17	$327

2019

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Largest Medicaid services in 2019

EMERGENCY DEPARTMENT VISIT HIGH MDM	714	$27,147
EMERGENCY DEPT VISIT MOD MDM	497	$12,283
EMERGENCY DEPT VISIT LOW MDM	444	$7,761
Service	64	$5,001
Service	118	$4,532
Electrocardiogram, routine ECG with at least 12 leads; interpretation and report only	562	$3,331
Electrocardiogram, routine ECG with at least 12 leads; tracing only, without interpretation and report	17	$713
Blood count; complete (CBC), automated (Hgb, Hct, RBC, WBC and platelet count) and automated differential WBC count	49	$532
Service	27	$307
Blood glucose (sugar) level	33	$147
Urea nitrogen; quantitative	12	$62

2018

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Largest Medicaid services in 2018

EMERGENCY DEPARTMENT VISIT HIGH MDM	802	$37,820
EMERGENCY DEPT VISIT MOD MDM	500	$11,558
EMERGENCY DEPT VISIT LOW MDM	548	$8,730
Service	200	$7,657
Electrocardiogram, routine ECG with at least 12 leads; interpretation and report only	577	$4,402
Service	28	$2,592
Blood count; complete (CBC), automated (Hgb, Hct, RBC, WBC and platelet count) and automated differential WBC count	29	$260
Blood glucose (sugar) level	26	$78
HEPATIC FUNCTION PANEL	12	$52

Drugs they prescribed that Part D paid

$750

Pharmacies billed $750 in 2024.

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

89 generic and fewer than 11 brand-name prescriptions · $750 in drug cost · 26 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

Ibuprofen	14	$56	$4

Year by year

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Part D prescribing by year

2024	93	74	None	None	$750
2023	152	115	None	None	$3,019
2022	140	100	14% (19)	None	$3,180
2021	46	36	None	None	$345
2020	50	36	None	None	$495
2019	89	59	None	13%	$2,401
2018	62	48	21% (13)	None	$1,892
2017	75	59	None	None	$1,237
2016	78	58	15% (12)	None	$2,313
2015	40	36	None	None	$674
2014	55	36	None	None	$2,328
2013	25	19	None	None	$276

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

See the drugs prescribed each year

2023: 2 drugs

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Part D drugs prescribed in 2023

Cephalexin	23	$208	$9
Ibuprofen	27	$109	$4

2022: 2 drugs

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Part D drugs prescribed in 2022

Cephalexin	23	$225	$10
Ciprofloxacin	11	$75	$7

2019: 2 drugs

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Part D drugs prescribed in 2019

Cephalexin	15	$98	$7
Prednisone	11	$32	$3

Money from drug and device companies

$267 in 2024

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Industry payments by year

2024	2	2	None	$267
2019	1	1	$25	$25

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

Medtronic	Kyphon Express II Kyphopak Tray	$169	1 payment Meals for Kyphon Express II Kyphopak Tray · 2024-09-24 · $169
Teleflex	Quikclot	$99	1 payment Meals for Quikclot · 2024-08-02 · $99

See all 2 published payments

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Every published payment

Medtronic	Meals · 2024-09-24	Kyphon Express II Kyphopak Tray	$169
Teleflex	Meals · 2024-08-02	Quikclot	$99

See earlier years (2019)

2019: $25

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Payments by company in 2019

Instrumentation Laboratory	None	$25	1 payment Paid to speak or teach · 2019-10-27 · $25

Checkups this office reported

Medicare did not publish checkup rates for this clinician.

Medicare’s overall office score: 80.6 / 100; Scores the office’s reporting and systems. It is not a grade for how the doctor treats you.

Professional record

NPI: 1871869883
Licence: CA A134764California A134764: Current · expires 2026-11-30
Trained: State University of New York at Stony Brook, School of Medicine, 2012
Group: Emergency Physicians Associates San Jose PC
Gender: Male

More record details

Sole proprietor: Yes
Taxonomy: Federal specialty code 207P00000X (207P00000X)
Mailing address: 460 Old Town Rd Apt 4n, Port Jefferson Station, NY, 11776
NPI first listed: 2012-03-25
NPI last updated: 2015-04-08

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