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William Albert Stone, MD

Emergency Medicine · San Jose

NPI 1841580545

Medicare standing
1 flag on the record
Listed below.
Plans that list them
Not verified
Not the same as out of network.
Office
1

On the public record

  • California licence: Delinquent

Offices

1 location

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. Stone’s office at (408) 259-5000 to ask if they take your plan before you enroll.

California Medical Board record

Licence A120260 · Delinquent

Licence status: Delinquent · since 2012 · expires 2023-12-31 · Rosalind Franklin University, the Chicago Medical School.

License renewal fee has not been paid. No practice is permitted.

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

Original Medicare doctor bills

$37,980

Medicare paid this office $37,980 for 267 people.

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

Largest Original Medicare bills
Emergency department visit with high level of medical decision making161$21,639$123
Critical care, first 30-74 minutes48$6,972$145
Emergency department visit with moderate level of medical decision making71$6,811$87
Emergency department visit with low level of medical decision making11$541$49

Who their Medicare patients are

267 Original Medicare patients in 2024. Average age 76 · Under 65 9% · 85 and older 27% · Women 63% · Also on Medicaid 32% · Health risk score 2.21. Above the middle of the specialty; the typical emergency medicine clinician is at 2.01.

Conditions among them: High blood pressure 75% · Diabetes 50% · Coronary heart disease 38% · Chronic kidney disease 38% · Depression 36% · Heart failure 33% · Dementia 32% · COPD 31% · Atrial fibrillation 28% · Cancer 14% · Stroke 11%.

The office billed $305,319, Medicare allowed $51,601 and paid $37,980; for 343 services of 21 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

Original Medicare by year
2024267343762.21$305,319$37,980
2023249315741.86$279,644$32,238
2022241310732.04$512,954$38,765
2021281323742.42$443,582$42,865
2020304441722.27$158,486$45,962
20196251,166702.42$460,991$82,898
20187461,713702.58$575,191$122,039
20177151,630722.79$521,945$163,150
20168691,516682.17$593,022$125,703
20159011,529672.17$589,157$125,389
20148821,504661.92$546,245$119,518
20136741,198661.89$400,806$87,884

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: 4 services

Original Medicare services billed in 2023
Emergency department visit with moderate level of medical decision making110$11,004$92
Emergency department visit with high level of medical decision making75$10,740$136
Critical care, first 30-74 minutes36$6,020$163
Emergency department visit with low level of medical decision making44$2,584$55

2022: 4 services

Original Medicare services billed in 2022
Emergency department visit with high level of medical decision making157$25,010$138
Critical care, first 30-74 minutes42$7,617$173
Emergency department visit with moderate level of medical decision making33$3,087$94
Emergency department visit with low level of medical decision making25$1,366$55

2021: 4 services

Original Medicare services billed in 2021
Emergency department visit with high level of medical decision making193$30,793$153
Critical care, first 30-74 minutes23$4,503$196
Emergency department visit with moderate level of medical decision making35$3,442$98
Emergency department visit with low level of medical decision making30$1,910$58

2020: 4 services

Original Medicare services billed in 2020
Emergency department visit with high level of medical decision making221$34,436$152
Emergency department visit with moderate level of medical decision making63$5,609$89
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only94$665$7
Emergency department visit with low level of medical decision making12$554$46

2019: 9 services

Original Medicare services billed in 2019
Emergency department visit with high level of medical decision making401$57,667$138
Emergency department visit with moderate level of medical decision making126$11,564$90
Critical care, first 30-74 minutes19$3,408$179
Emergency department visit with low level of medical decision making51$2,316$45
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only229$1,691$7
Emergent insertion of breathing tube into windpipe using an endoscope14$1,614$115
X-ray of chest, 1 view149$1,160$8
Insertion of non-tunneled central venous tube for infusion (5 years or older)11$765$70
X-ray of chest, 2 views31$245$8

2018: 10 services

Original Medicare services billed in 2018
Emergency department visit with high level of medical decision making498$80,471$158
Critical care, first 30-74 minutes53$11,146$210
Emergency department visit with moderate level of medical decision making98$10,796$107
Emergency department visit with low level of medical decision making67$3,873$55
Emergent insertion of breathing tube into windpipe using an endoscope27$3,584$133
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only416$3,571$8
X-ray of chest, 1 view253$2,338$9
Insertion of non-tunneled central venous tube for infusion (5 years or older)20$1,922$96
X-ray of chest, 2 views60$610$10
X-ray of abdomen, 1 view15$130$9

2017: 10 services

Original Medicare services billed in 2017
Emergency department visit with high level of medical decision making531$113,345$208
Emergency department visit with moderate level of medical decision making88$12,178$138
Critical care, first 30-74 minutes43$12,008$279
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only430$4,886$11
Emergent insertion of breathing tube into windpipe using an endoscope25$4,314$173
Emergency department visit with low level of medical decision making53$3,857$71
Insertion of non-tunneled central venous tube for infusion (5 years or older)22$3,318$151
X-ray of chest, 1 view, front240$2,967$12
X-ray of hip, 2-3 views12$195$15
X-ray of pelvis, 1-2 views11$128$12

2016: 8 services

Original Medicare services billed in 2016
Emergency department visit with high level of medical decision making585$85,308$136
Emergency department visit with moderate level of medical decision making163$15,325$89
Critical care, first 30-74 minutes36$6,353$176
Emergency department visit with low level of medical decision making98$4,639$47
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only403$3,010$7
Emergent insertion of breathing tube into windpipe using an endoscope25$2,227$89
Insertion of non-tunneled central venous tube for infusion (5 years or older)22$2,172$99
Ultrasonic guidance for blood vessel access13$165$12

2015: 7 services

Original Medicare services billed in 2015
Emergency department visit with high level of medical decision making610$89,793$135
Emergency department visit with moderate level of medical decision making180$15,705$85
Emergency department visit with low level of medical decision making104$5,386$46
Critical care, first 30-74 minutes21$3,794$181
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only396$2,957$7
Insertion of non-tunneled central venous tube for infusion (5 years or older)25$2,474$99
Emergent insertion of breathing tube into windpipe using an endoscope26$2,321$89

2014: 7 services

Original Medicare services billed in 2014
Emergency department visit with high level of medical decision making575$81,377$135
Emergency department visit with moderate level of medical decision making170$15,283$88
Emergency department visit with low level of medical decision making123$5,681$44
Critical care, first 30-74 minutes27$5,194$179
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only413$3,121$7
Insertion of non-tunneled central venous tube for infusion (5 years or older)30$2,962$99
Emergent insertion of breathing tube into windpipe using an endoscope25$2,224$89

2013: 7 services

Original Medicare services billed in 2013
Emergency department visit with high level of medical decision making437$59,289$128
Emergency department visit with moderate level of medical decision making110$9,809$86
Emergency department visit with low level of medical decision making102$4,788$45
Critical care, first 30-74 minutes16$2,779$174
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only335$2,542$7
Insertion of non-tunneled central venous tube for infusion (5 years or older)18$1,999$95
Emergent insertion of breathing tube into windpipe using an endoscope21$1,802$86

Medicaid work

$213,620 in 2024

Medicaid paid $213,620 for 1,776 billed services this clinician did in 2024, up to 71 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.

Largest Medicaid services in 2024
EMERGENCY DEPT VISIT LOW MDM381$112,746
EMERGENCY DEPT VISIT MOD MDM488$74,945
EMERGENCY DEPARTMENT VISIT STRAIGHTFORWARD MDM37$8,120
Radiologic examination, chest; single view102$4,532
Infectious agent antigen detection by immunoassay with direct optical (ie, visual) observation; Influenza172$3,618
EMERGENCY DEPARTMENT VISIT HIGH MDM28$2,512
COMPREHENSIVE METABOLIC PANEL68$2,030
Infectious agent detection by nucleic acid (DNA or RNA); severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) (coronavirus disease [COVID-19]), amplified probe technique148$1,599
Infectious agent antigen detection by immunoassay with direct optical (ie, visual) observation; Streptococcus, group A56$1,070
Blood count; complete (CBC), automated (Hgb, Hct, RBC, WBC and platelet count)178$1,052
Culture, bacterial; any other source except urine, blood or stool, aerobic, with isolation and presumptive identification of isolates25$998
ASSAY OF LIPASE29$393
Medicaid work by year
20241,7761571$213,620
20233,9192266$357,764
20223,8212175$353,830
20212,1871490$152,168
20202,0202081$94,438
20195,76024286$258,160
20186,69322269$259,966
See the largest Medicaid services in earlier years

2023

Largest Medicaid services in 2023
EMERGENCY DEPT VISIT LOW MDM983$174,539
EMERGENCY DEPT VISIT MOD MDM776$134,977
EMERGENCY DEPARTMENT VISIT STRAIGHTFORWARD MDM149$39,513
EMERGENCY DEPARTMENT VISIT HIGH MDM34$2,433
Radiologic examination, chest; single view185$1,603
Infectious agent detection by nucleic acid (DNA or RNA); severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) (coronavirus disease [COVID-19]), amplified probe technique223$1,392
COMPREHENSIVE METABOLIC PANEL245$930
Infectious agent antigen detection by immunoassay with direct optical (ie, visual) observation; Influenza222$641
Therapeutic, prophylactic, or diagnostic injection (specify substance or drug); intravenous push, single or initial substance/drug190$621
Blood count; complete (CBC), automated (Hgb, Hct, RBC, WBC and platelet count)348$432
Electrocardiogram, routine ECG with at least 12 leads; tracing only, without interpretation and report66$193
Therapeutic, prophylactic, or diagnostic injection (specify substance or drug); each additional sequential intravenous push of a new substance/drug (List separately in addition to code for primary procedure)37$129

2022

Largest Medicaid services in 2022
EMERGENCY DEPT VISIT LOW MDM1,184$177,469
EMERGENCY DEPT VISIT MOD MDM572$123,862
EMERGENCY DEPARTMENT VISIT HIGH MDM414$25,438
EMERGENCY DEPARTMENT VISIT STRAIGHTFORWARD MDM100$22,016
COMPREHENSIVE METABOLIC PANEL231$1,124
Radiologic examination, chest; single view211$1,040
Therapeutic, prophylactic, or diagnostic injection (specify substance or drug); intravenous push, single or initial substance/drug148$651
Electrocardiogram, routine ECG with at least 12 leads; tracing only, without interpretation and report45$445
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, making use of high throughput technologies as described by cms-2020-01-r25$377
Infectious agent detection by nucleic acid (DNA or RNA); severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) (coronavirus disease [COVID-19]), amplified probe technique100$357
Blood count; complete (CBC), automated (Hgb, Hct, RBC, WBC and platelet count)315$342
Infectious agent antigen detection by immunoassay with direct optical (ie, visual) observation; Influenza121$291

2021

Largest Medicaid services in 2021
EMERGENCY DEPT VISIT LOW MDM879$86,544
EMERGENCY DEPT VISIT MOD MDM371$36,137
EMERGENCY DEPARTMENT VISIT HIGH MDM506$26,461
Service28$1,048
Service35$843
Blood count; complete (CBC), automated (Hgb, Hct, RBC, WBC and platelet count)163$311
Radiologic examination, chest; single view72$298
Electrocardiogram, routine ECG with at least 12 leads; tracing only, without interpretation and report19$198
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, making use of high throughput technologies as described by cms-2020-01-r12$150
COMPREHENSIVE METABOLIC PANEL42$91
Troponin, quantitative17$55
ASSAY OF LIPASE16$33

2020

Largest Medicaid services in 2020
EMERGENCY DEPARTMENT VISIT HIGH MDM631$60,490
EMERGENCY DEPT VISIT MOD MDM284$19,126
EMERGENCY DEPT VISIT LOW MDM158$6,441
Intravenous infusion, hydration; each additional hour (List separately in addition to code for primary procedure)15$4,947
Service28$977
Unlisted special service, procedure or report12$935
Electrocardiogram, routine ECG with at least 12 leads; interpretation and report only94$595
Service14$539
COMPREHENSIVE METABOLIC PANEL164$148
Electrocardiogram, routine ECG with at least 12 leads; tracing only, without interpretation and report83$103
Therapeutic, prophylactic, or diagnostic injection (specify substance or drug); intravenous push, single or initial substance/drug35$33
Blood count; complete (CBC), automated (Hgb, Hct, RBC, WBC and platelet count) and automated differential WBC count205$33

2019

Largest Medicaid services in 2019
EMERGENCY DEPARTMENT VISIT HIGH MDM998$93,392
EMERGENCY DEPT VISIT LOW MDM1,465$67,105
EMERGENCY DEPT VISIT MOD MDM986$61,132
Service259$9,684
Intravenous infusion, hydration; each additional hour (List separately in addition to code for primary procedure)47$9,258
Electrocardiogram, routine ECG with at least 12 leads; interpretation and report only454$5,056
COMPREHENSIVE METABOLIC PANEL221$3,544
Computed tomography, head or brain; without contrast material26$2,930
Radiologic examination, chest; 2 views245$1,313
Drug test(s), presumptive, any number of drug classes, any number of devices or procedures; by instrument chemistry analyzers (eg, utilizing immunoassay [eg, EIA, ELISA, EMIT, FPIA, IA, KIMS, RIA]), chromatography (eg, GC, HPLC), and mass spectrometry either with or without chromatography, (eg, DART, DESI, GC-MS, GC-MS/MS, LC-MS, LC-MS/MS, LDTD, MALDI, TOF) includes sample validation when performed, per date of service27$1,235
Radiologic examination, chest; single view183$924
Blood count; complete (CBC), automated (Hgb, Hct, RBC, WBC and platelet count) and automated differential WBC count288$867

2018

Largest Medicaid services in 2018
EMERGENCY DEPARTMENT VISIT HIGH MDM1,079$88,695
EMERGENCY DEPT VISIT LOW MDM1,926$74,874
EMERGENCY DEPT VISIT MOD MDM1,048$60,511
Service430$15,787
Electrocardiogram, routine ECG with at least 12 leads; interpretation and report only780$7,675
COMPREHENSIVE METABOLIC PANEL157$1,937
Radiologic examination, chest; single view392$1,679
Electrocardiogram, routine ECG with at least 12 leads; tracing only, without interpretation and report55$1,604
Critical care, evaluation and management of the critically ill or critically injured patient; first 30-74 minutes13$1,294
Radiologic examination, chest; 2 views156$1,013
Blood count; complete (CBC), automated (Hgb, Hct, RBC, WBC and platelet count)113$807
Service75$805

Drugs they prescribed that Part D paid

$5,363

Pharmacies billed $5,363 in 2024.

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

Opioids were 11% of their Part D prescriptions (37 of 339) in 2024. At or below the middle of the specialty; the typical emergency medicine clinician is at 12%.

312 generic and fewer than 11 brand-name prescriptions · $5,363 in drug cost · 94 antibiotic prescriptions to 86 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.

Largest Part D drug costs
Cephalexin38$460$12
Ondansetron Odt26$144$6
Methocarbamol22$138$6
Hydrocodone-Acetaminophen25$129$5
Diclofenac47$120$3
See all 6 drugs
Every Part D drug this clinician prescribed
Cephalexin38$460$12
Ondansetron Odt26$144$6
Methocarbamol22$138$6
Hydrocodone-Acetaminophen25$129$5
Diclofenac47$120$3
Prednisone17$27$2

Year by year

Part D prescribing by year
202433922711% (37)None$5,363
202327921010% (28)None$3,064
202226219013% (34)None$4,127
202115611620% (31)None$2,188
20205640NoneNone$536
201917113519% (32)None$2,696
201815811920% (32)8%$2,943
201718914819% (36)None$2,848
201635824023% (81)7%$4,826
201531520623% (73)None$4,589
201427217420% (55)None$3,616
201318511932% (60)None$2,278

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

See the drugs prescribed each year

2023: 7 drugs

Part D drugs prescribed in 2023
Cephalexin30$382$13
Ondansetron Odt35$222$6
Diclofenac40$135$3
Methocarbamol16$116$7
Ciprofloxacin11$104$9
Hydrocodone-Acetaminophen24$83$3
Prednisone14$30$2

2022: 5 drugs

Part D drugs prescribed in 2022
Cephalexin33$441$13
Ondansetron Odt23$167$7
Hydrocodone-Acetaminophen28$119$4
Diclofenac25$88$4
Prednisone13$46$4

2021: 4 drugs

Part D drugs prescribed in 2021
Cephalexin19$178$9
Ondansetron Odt13$92$7
Hydrocodone-Acetaminophen17$58$3
Prednisone12$30$3

2019: 4 drugs

Part D drugs prescribed in 2019
Cephalexin15$176$12
Hydrocodone-Acetaminophen20$115$6
Ciprofloxacin11$86$8
Ondansetron15$84$6

2018: 3 drugs

Part D drugs prescribed in 2018
Cephalexin13$148$11
Hydrocodone-Acetaminophen21$124$6
Prednisone13$48$4

2017: 5 drugs

Part D drugs prescribed in 2017
Ondansetron Odt16$117$7
Cephalexin14$98$7
Acetaminophen-Codeine21$84$4
Ciprofloxacin12$79$7
Prednisone14$42$3

2016: 8 drugs

Part D drugs prescribed in 2016
Oxycodone-Acetaminophen51$474$9
Ciprofloxacin34$340$10
Cephalexin35$277$8
Levofloxacin28$261$9
Ondansetron Odt28$168$6
Azithromycin16$142$9
Prednisone25$95$4
Acetaminophen-Codeine17$76$4

2015: 7 drugs

Part D drugs prescribed in 2015
Oxycodone-Acetaminophen53$453$9
Cephalexin29$329$11
Levofloxacin24$271$11
Prednisone28$140$5
Ondansetron Odt23$131$6
Ciprofloxacin12$104$9
Acetaminophen-Codeine12$54$5

2014: 5 drugs

Part D drugs prescribed in 2014
Levofloxacin21$449$21
Cephalexin30$298$10
Hydrocodone-Acetaminophen29$182$6
Prednisone35$169$5
Acetaminophen-Codeine16$92$6

2013: 4 drugs

Part D drugs prescribed in 2013
Hydrocodone-Acetaminophen53$346$7
Cephalexin13$185$14
Prednisone18$61$3
Ciprofloxacin11$60$5

Money from drug and device companies

$99 in 2025

A payment is not proof that care is biased.

Payments by company
Fisher & Paykel HealthcareFisher & Paykel Healthcare$99
1 payment
  • Meals for Fisher & Paykel Healthcare · 2025-12-11 · $99
See the published payment
Every published payment
Fisher & Paykel HealthcareMeals · 2025-12-11Fisher & Paykel Healthcare$99

Professional record

NPI
1841580545
Licence
CA A120260California A120260: Delinquent · expires 2023-12-31
More record details
Sole proprietor
Yes
Taxonomy
Federal specialty code 207P00000X (207P00000X)
Mailing address
2 Pierce Ave Apt 520, San Jose, CA, 95110
NPI first listed
2011-04-14
NPI last updated
2017-04-05

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