Charles A Poon, MD

Offices

1 location · Permanente Medical Group Inc · 10,928 clinicians in this group

Looking this up.

Hospitals listed: Kaiser Foundation Hospital-Santa Clara. That is not proof they admit you there this week.

Plans that list them

4 plans · 1 carrier

A missing listing does not mean out of network. Directories change, and a listing does not cover every office. Call Dr. Poon’s office at (408) 851-1000 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

Kaiser Permanente Dual Complete North P2 (HMO D-SNP)	Kaiser Permanente	Listed	Sep 1, 2026
Kaiser Permanente Dual Complete North P23 (HMO D-SNP)	Kaiser Permanente	Listed	Sep 1, 2026
Kaiser Permanente Sr Adv Basic Santa Clara (HMO)	Kaiser Permanente	Listed	Sep 1, 2026
Kaiser Permanente Sr Adv Enhanced Santa Clara (HMO)	Kaiser Permanente	Listed	Sep 1, 2026

California Medical Board record

Licence A103158 · Current

Licensed to practise in California · since 2008 · expires 2028-02-29 · Loma Linda University School of Medicine.

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.

Kaiser Foundation Hospital-Santa ClaraSanta Clara, CAAcute Care Hospital · Voluntary non-profit - Private · Has an emergency department · Birthing-friendlyPart of Kaiser Permanente, which runs 41 hospitals in 3 statesPatients rate it 3 of 5 · 75% would definitely recommend it
Overall rating: 2 of 5 starsBetter than the national rate — Clostridium Difficile (C.Diff): 0.38, Oct 2024 – Sep 2025

See every measure and the patient survey for Kaiser Foundation Hospital-Santa Clara

Behind the star rating — Deaths: 0 better, 3 the same, 0 worse of 3 measures. Safety: 2 better, 4 the same, 0 worse of 6 measures. Readmissions: 0 better, 1 the same, 1 worse of 2 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 Kaiser Foundation Hospital-Santa Clara

Clostridium Difficile (C.Diff)Infections	0.38	Better	Oct 2024 – Sep 2025
Abdominopelvic accidental puncture or laceration rateComplications and deaths	1.01 (0 to 2.09) · 181 cases	No different	Jul 2022 – Jun 2024
CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths	1.02 (0.61 to 1.42)	No different	Jul 2022 – Jun 2024
Death rate for stroke patientsComplications and deaths	10.5 · 312 cases	None	Jul 2023 – Jun 2025
Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths	3.8 · 3,736 cases	None	Jul 2024 – Jun 2025
Iatrogenic pneumothorax rateComplications and deaths	0.2 (0 to 0.43) · 910 cases	No different	Jul 2022 – Jun 2024
In-hospital fall-associated fracture rateComplications and deaths	0.26 (0.05 to 0.48) · 1,036 cases	No different	Jul 2022 – Jun 2024
Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths	4.53 (2.03 to 7.03) · 235 cases	No different	Jul 2022 – Jun 2024
Postoperative acute kidney injury requiring dialysis rateComplications and deaths	1.57 (0 to 3.25) · 83 cases	No different	Jul 2022 – Jun 2024
Postoperative hemorrhage or hematoma rateComplications and deaths	2.5 (0.82 to 4.18) · 178 cases	No different	Jul 2022 – Jun 2024
Postoperative respiratory failure rateComplications and deaths	11.73 (3.81 to 19.64) · 74 cases	No different	Jul 2022 – Jun 2024
Postoperative sepsis rateComplications and deaths	5.31 (1.3 to 9.32) · 94 cases	No different	Jul 2022 – Jun 2024
Postoperative wound dehiscence rateComplications and deaths	1.75 (0.22 to 3.28) · 37 cases	No different	Jul 2022 – Jun 2024
Pressure ulcer rateComplications and deaths	0.34 (0 to 1.34) · 819 cases	No different	Jul 2022 – Jun 2024
Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections	0.72	No different	Oct 2024 – Sep 2025
Central Line Associated Bloodstream Infection (ICU + select Wards)Infections	1.049	No different	Oct 2024 – Sep 2025
MRSA BacteremiaInfections	0.598	No different	Oct 2024 – Sep 2025
SSI - Colon SurgeryInfections	0.926	No different	Oct 2024 – Sep 2025
Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits	13 · 589 cases	None	Jul 2023 – Jun 2025
Heart failure (HF) 30-Day Readmission RateUnplanned return visits	20.7 · 828 cases	None	Jul 2023 – Jun 2025
Hospital return days for heart failure patientsUnplanned return visits	107.6 · 27 cases	None	Jul 2022 – Jun 2025
Pneumonia (PN) 30-Day Readmission RateUnplanned return visits	17.9 · 642 cases	None	Jul 2023 – Jun 2025
Rate of readmission for CABGUnplanned return visits	7.8 · 249 cases	None	Jul 2023 – Jun 2025
Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits	20.6 · 181 cases	None	Jul 2023 – Jun 2025

What patients said (572 patients answered, 25% of those asked)

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Patient survey stars by topic at Kaiser Foundation Hospital-Santa Clara

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

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Share of patients giving the best answer at Kaiser Foundation Hospital-Santa Clara

Room was "always" clean	72%
Nurses "always" communicated well	75%
Doctors "always" communicated well	80%
Staff "always" explained	57%
Yes, staff "did" give patients this information	88%
Yes, staff "did" give patients information about help after discharge	88%
Doctors "always" explained things so they could understand	74%
Doctors "always" listened carefully	79%
Doctors "always" treated them with courtesy and respect	87%
Patients who gave a rating of "9" or "10" (high)	70%
Staff "always" explained new medications	72%
Nurses "always" explained things so they could understand	72%
Nurses "always" listened carefully	71%
Nurses "always" treated them with courtesy and respect	82%
"Always" quiet at night	44%
"YES", patients would definitely recommend the hospital	75%
Staff "always" explained possible side effects	42%
Yes, staff "did" give patients information about possible symptoms	89%

Original Medicare doctor bills

$1,813

Medicare paid this office $1,813 for 15 people.

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

Who their Medicare patients are

15 Original Medicare patients in 2024. Average age 73 · Health risk score 3.84. Sicker patients than 9 in 10 peers; the typical internal medicine clinician is at 1.76.

The office billed $6,443, Medicare allowed $2,386 and paid $1,813; for 18 services of 8 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	15	18	73	3.84	$6,443	$1,813
2023	11	20	68	3.23	$9,463	$1,808
2022	23	41	72	2.72	$15,874	$2,879
2021	15	38	66	4.18	$7,613	$2,645
2020	14	31	73	3.14	$5,292	$2,262
2018	20	40	72	2.98	$8,825	$2,979
2017	17	36	68	3.27	$9,053	$2,780
2016	15	32	69	2.74	$6,931	$2,023
2015	18	37	64	4.30	$9,852	$2,969
2014	206	571	74	2.60	$225,856	$52,363
2013	88	221	75	2.40	$88,807	$20,277

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

2020: 1 service

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Original Medicare services billed in 2020

Subsequent hospital care with moderate levelof medical decision making at least 35 minutes	12	$1,529	$66

2014: 7 services

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Original Medicare services billed in 2014

Subsequent hospital care with moderate levelof medical decision making at least 50 minutes	82	$17,144	$89
Critical care, first 30-74 minutes	32	$10,297	$187
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes	72	$8,912	$61
Return visit (30+ min)	43	$3,590	$83
Initial hospital care with straightforward or low-level medical decision making at least 55 minutes	30	$3,529	$118
Short return visit (20+ min)	33	$3,160	$63
Initial hospital care with moderate level of medical decision making at least 75 minutes	14	$2,318	$166

2013: 5 services

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Original Medicare services billed in 2013

Subsequent hospital care with moderate levelof medical decision making at least 35 minutes	48	$5,766	$60
Critical care, first 30-74 minutes	15	$4,045	$184
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes	23	$3,547	$87
Initial hospital care with moderate level of medical decision making at least 75 minutes	15	$2,532	$169
Initial hospital care with straightforward or low-level medical decision making at least 55 minutes	11	$1,259	$114

Drugs they prescribed that Part D paid

$133,996

Pharmacies billed $133,996 in 2024.

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

307 generic and fewer than 11 brand-name prescriptions · $133,996 in drug cost · 43 antibiotic prescriptions to 13 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

Spiriva Respimat	31	$27,110	$875
Pirfenidone	53	$13,962	$263
Breyna	54	$7,182	$133
Alvesco	17	$1,932	$114
Methylphenidate Er	12	$1,405	$117

See all 12 drugs

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Every Part D drug this clinician prescribed

Spiriva Respimat	31	$27,110	$875
Pirfenidone	53	$13,962	$263
Breyna	54	$7,182	$133
Alvesco	17	$1,932	$114
Methylphenidate Er	12	$1,405	$117
Ramelteon	16	$1,316	$82
Doxepin	11	$726	$66
Prednisone	24	$333	$14
Albuterol Sulfate Hfa	15	$323	$22
Gabapentin	27	$312	$12
Amoxicillin-Clavulanate Potass	12	$209	$17
Pregabalin	12	$105	$9

Year by year

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Part D prescribing by year

2024	407	108	None	None	$133,996
2023	386	110	0% (0)	None	$124,097
2022	402	132	0% (0)	None	$263,184
2021	305	96	0% (0)	54%	$197,618
2020	364	103	0% (0)	49%	$211,280
2019	438	153	0% (0)	61%	$349,207
2018	563	137	0% (0)	62%	$322,832
2017	721	141	0% (0)	56%	$298,183
2016	570	143	0% (0)	55%	$183,582
2015	663	168	0% (0)	53%	$164,417
2014	332	114	0% (0)	62%	$53,916
2013	205	45	0% (0)	75%	$44,495

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

See the drugs prescribed each year

2023: 9 drugs

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Part D drugs prescribed in 2023

Spiriva Respimat	36	$28,901	$803
Pirfenidone	45	$21,754	$483
Stiolto Respimat	23	$8,928	$388
Symbicort	28	$7,973	$285
Prednisone	31	$497	$16
Albuterol Sulfate Hfa	25	$464	$19
Gabapentin	20	$217	$11
Amoxicillin-Clavulanate Potass	13	$213	$16
Sulfamethoxazole-Trimethoprim	12	$80	$7

2022: 14 drugs

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Part D drugs prescribed in 2022

Esbriet	11	$130,127	$11,830
Pirfenidone	22	$33,583	$1,527
Spiriva Respimat	40	$26,667	$667
Symbicort	22	$7,529	$342
Stiolto Respimat	15	$7,250	$483
Ramelteon	16	$2,865	$179
Wixela Inhub	13	$2,736	$210
Alvesco	15	$1,809	$121
Mycophenolate Mofetil	11	$1,162	$106
Albuterol Sulfate Hfa	32	$721	$23
Prednisone	24	$340	$14
Azithromycin	12	$270	$22
Amoxicillin-Clavulanate Potass	14	$229	$16
Gabapentin	12	$124	$10

2021: 9 drugs

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Part D drugs prescribed in 2021

Spiriva Respimat	27	$17,933	$664
Alvesco	19	$3,018	$159
Symbicort	11	$2,747	$250
Wixela Inhub	11	$1,499	$136
Methylphenidate Er (La)	11	$1,467	$133
Prednisone	33	$969	$29
Albuterol Sulfate Hfa	34	$782	$23
Amoxicillin-Clavulanate Potass	11	$205	$19
Gabapentin	11	$139	$13

2020: 9 drugs

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Part D drugs prescribed in 2020

Spiriva Respimat	46	$17,248	$375
Atrovent Hfa	12	$8,276	$690
Advair Diskus	23	$5,464	$238
Ventolin Hfa	26	$1,996	$77
Ramelteon	13	$1,390	$107
Prednisone	44	$1,112	$25
Azithromycin	15	$461	$31
Montelukast	22	$166	$8
Doxycycline Monohydrate	11	$144	$13

2019: 9 drugs

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Part D drugs prescribed in 2019

Esbriet	12	$108,421	$9,035
Spiriva Respimat	70	$26,679	$381
Advair Diskus	47	$11,648	$248
Stiolto Respimat	13	$7,575	$583
Ventolin Hfa	47	$3,812	$81
Azithromycin	14	$606	$43
Prednisone	28	$448	$16
Doxycycline Monohydrate	23	$321	$14
Fluticasone Propionate	16	$252	$16

2018: 16 drugs

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Part D drugs prescribed in 2018

Letairis	11	$111,150	$10,105
Stiolto Respimat	54	$41,388	$766
Spiriva Respimat	71	$26,445	$372
Advair Diskus	60	$18,490	$308
Dulera	14	$13,598	$971
Daliresp	12	$5,480	$457
Ventolin Hfa	49	$3,461	$71
Sildenafil	12	$2,038	$170
Qvar	12	$1,139	$95
Azithromycin	32	$1,075	$34
Ethambutol	12	$929	$77
Rifampin	13	$832	$64
Prednisone	30	$595	$20
Doxycycline Monohydrate	28	$379	$14
Fluticasone Propionate	25	$373	$15
Famotidine	11	$167	$15

2017: 17 drugs

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Part D drugs prescribed in 2017

Opsumit	12	$107,565	$8,964
Spiriva Respimat	121	$44,059	$364
Dulera	55	$14,635	$266
Advair Diskus	34	$13,866	$408
Stiolto Respimat	13	$10,901	$839
Serevent Diskus	15	$5,826	$388
Ventolin Hfa	70	$3,367	$48
Qvar	17	$1,801	$106
Ethambutol	23	$1,334	$58
Prednisone	48	$1,060	$22
Azithromycin	52	$1,029	$20
Rifampin	19	$978	$51
Doxycycline Monohydrate	39	$605	$16
Montelukast	24	$462	$19
Fluticasone Propionate	21	$307	$15
Amoxicillin-Clavulanate Potass	12	$271	$23
Furosemide	13	$105	$8

2016: 14 drugs

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Part D drugs prescribed in 2016

Opsumit	11	$86,587	$7,872
Spiriva Respimat	93	$28,003	$301
Advair Diskus	33	$20,314	$616
Dulera	65	$13,384	$206
Combivent Respimat	12	$7,400	$617
Amoxicillin-Clavulanate Potass	24	$2,711	$113
Ventolin Hfa	37	$1,585	$43
Azathioprine	17	$1,237	$73
Prednisone	43	$1,088	$25
Doxycycline Monohydrate	43	$737	$17
Azithromycin	29	$511	$18
Fluticasone Propionate	22	$352	$16
Montelukast	15	$305	$20
Levofloxacin	12	$121	$10

2015: 16 drugs

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Part D drugs prescribed in 2015

Spiriva	86	$38,749	$451
Advair Diskus	32	$27,268	$852
Dulera	93	$26,416	$284
Combivent Respimat	19	$10,885	$573
Spiriva Respimat	19	$5,999	$316
Amoxicillin-Clavulanate Potass	24	$2,220	$92
Qvar	17	$2,009	$118
Proair Hfa	44	$1,821	$41
Montelukast	51	$1,459	$29
Prednisone	51	$1,117	$22
Azithromycin	29	$900	$31
Doxycycline Monohydrate	36	$802	$22
Azathioprine	13	$733	$56
Fluticasone Propionate	23	$550	$24
Levofloxacin	17	$173	$10
Furosemide	17	$119	$7

2014: 11 drugs

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Part D drugs prescribed in 2014

Spiriva	59	$19,762	$335
Advair Diskus	26	$9,188	$353
Symbicort	29	$7,412	$256
Combivent Respimat	15	$5,892	$393
Dulera	11	$2,905	$264
Proair Hfa	30	$1,345	$45
Ventolin Hfa	16	$711	$44
Fluticasone Propionate	16	$343	$21
Montelukast	12	$267	$22
Prednisone	24	$208	$9
Azithromycin	11	$186	$17

2013: 6 drugs

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Part D drugs prescribed in 2013

Spiriva	45	$13,746	$305
Symbicort	35	$10,322	$295
Advair Diskus	18	$5,410	$301
Combivent Respimat	14	$3,601	$257
Proair Hfa	17	$1,048	$62
Azithromycin	23	$785	$34

Money from drug and device companies

$150 in 2025

A payment is not proof that care is biased.

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Payments by company

Jazz Pharmaceuticals	Xywav	$150	1 payment Consulting for Xywav · 2025-02-13 · $150

See the published payment

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Every published payment

Jazz Pharmaceuticals	Consulting · 2025-02-13	Xywav	$150

Professional record

NPI: 1245475334
Licence: CA A103158California A103158: Current · expires 2028-02-29
Trained: Loma Linda University School of Medicine, 2006
Group: Permanente Medical Group Inc
Gender: Male

More record details

Sole proprietor: Yes
Taxonomy: Internal medicine (207R00000X)
Mailing address: 4150 V St, Suite 3400, Sacramento, CA, 95817
NPI first listed: 2008-12-03
NPI last updated: 2022-02-11

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

This office lists an electronic records connection.