William Douglas Mulkerin, MD

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. Mulkerin’s office at (650) 723-4000 to ask if they take your plan before you enroll.

California Medical Board record

Licence A126780 · Current

Licensed to practise in California · since 2013 · expires 2027-08-31 · University of California, Irvine College of Medicine.

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

School, training and certification

What this clinician told their state board, medical school and everything before it. Only some states publish this, so nothing here means the state does not say, not that there was no training or certification.

Specialty certification

American Board of Emergency Medicine - Emergency Medical Services

Original Medicare doctor bills

$28,715

Medicare paid this office $28,715 for 195 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	150	$21,345	$139
Critical care, first 30-74 minutes	26	$4,843	$179
Emergency department visit with moderate level of medical decision making	18	$1,502	$83

Who their Medicare patients are

195 Original Medicare patients in 2024. Average age 74 · Under 65 18% · 85 and older 22% · Women 56% · Also on Medicaid 45% · Health risk score 2.67. Sicker patients than 9 in 10 peers; the typical emergency medicine clinician is at 2.01.

Conditions among them: High blood pressure 75% · Chronic kidney disease 47% · Diabetes 44% · Coronary heart disease 40% · Heart failure 34% · Depression 31% · Atrial fibrillation 28% · Dementia 27% · COPD 23% · Cancer 22% · Stroke 22%.

The office billed $195,458, Medicare allowed $38,794 and paid $28,715; for 228 services of 14 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	195	228	74	2.67	$195,458	$28,715
2023	204	240	72	2.22	$174,470	$30,104
2022	225	245	74	2.01	$160,458	$31,860
2021	85	101	75	1.94	$66,793	$12,112
2020	209	254	72	2.59	$169,576	$32,416
2019	251	288	75	2.01	$169,535	$33,342
2018	240	276	75	2.28	$169,157	$33,843
2017	285	323	73	2.23	$205,664	$40,766
2016	355	407	74	2.11	$235,191	$50,659
2015	149	165	73	2.10	$108,414	$20,326

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: 3 services

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Original Medicare services billed in 2023

Emergency department visit with high level of medical decision making	112	$17,239	$154
Emergency department visit with moderate level of medical decision making	72	$7,614	$102
Critical care, first 30-74 minutes	16	$3,058	$191

2022: 3 services

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Original Medicare services billed in 2022

Emergency department visit with moderate level of medical decision making	119	$14,591	$120
Emergency department visit with high level of medical decision making	72	$12,353	$169
Critical care, first 30-74 minutes	14	$2,821	$201

2021: 2 services

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Original Medicare services billed in 2021

Emergency department visit with high level of medical decision making	38	$6,278	$161
Emergency department visit with moderate level of medical decision making	34	$4,179	$116

2020: 5 services

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Original Medicare services billed in 2020

Emergency department visit with high level of medical decision making	132	$21,328	$160
Critical care, first 30-74 minutes	22	$4,645	$211
Emergency department visit with moderate level of medical decision making	46	$4,211	$92
Emergency department visit with low level of medical decision making	11	$537	$49
Ultrasound of heart, follow-up	13	$315	$24

2019: 5 services

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Original Medicare services billed in 2019

Emergency department visit with high level of medical decision making	144	$21,134	$146
Emergency department visit with moderate level of medical decision making	51	$4,927	$97
Critical care, first 30-74 minutes	13	$2,575	$198
Initial hospital observation care per day, typically 30 minutes	11	$796	$72
Emergency department visit with low level of medical decision making	12	$596	$50

2018: 4 services

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Original Medicare services billed in 2018

Emergency department visit with high level of medical decision making	130	$19,138	$146
Critical care, first 30-74 minutes	32	$6,254	$195
Emergency department visit with moderate level of medical decision making	32	$3,108	$97
Hospital observation care on day of discharge	12	$802	$67

2017: 5 services

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Original Medicare services billed in 2017

Emergency department visit with high level of medical decision making	157	$22,397	$143
Critical care, first 30-74 minutes	41	$7,602	$185
Emergency department visit with moderate level of medical decision making	41	$3,984	$97
Initial hospital observation care per day, typically 70 minutes	13	$2,166	$167
Ultrasound of heart, follow-up	11	$256	$23

2016: 7 services

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Original Medicare services billed in 2016

Emergency department visit with high level of medical decision making	210	$31,440	$146
Critical care, first 30-74 minutes	28	$5,479	$196
Emergency department visit with moderate level of medical decision making	51	$4,832	$95
Initial hospital observation care per day, typically 70 minutes	19	$3,080	$162
Hospital observation care on day of discharge	31	$2,000	$65
Emergency department visit with low level of medical decision making	11	$533	$48
Ultrasound of heart, follow-up	11	$256	$23

2015: 3 services

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Original Medicare services billed in 2015

Emergency department visit with high level of medical decision making	80	$11,844	$148
Critical care, first 30-74 minutes	14	$2,756	$197
Emergency department visit with moderate level of medical decision making	26	$2,466	$95

Medicaid work

$29,388 in 2024

Medicaid paid $29,388 for 260 billed services this clinician did in 2024, up to 30 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	260	$29,388

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Medicaid work by year

2024	260	1	30	$29,388
2023	212	2	23	$16,009
2022	191	2	29	$15,150
2021	66	2	18	$4,454
2020	173	1	23	$15,006
2019	184	3	24	$13,487
2018	187	3	23	$11,324

See the largest Medicaid services in earlier years

2023

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Largest Medicaid services in 2023

EMERGENCY DEPT VISIT MOD MDM	132	$9,363
EMERGENCY DEPARTMENT VISIT HIGH MDM	80	$6,646

2022

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Largest Medicaid services in 2022

EMERGENCY DEPT VISIT MOD MDM	178	$14,517
EMERGENCY DEPARTMENT VISIT HIGH MDM	13	$633

2021

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Largest Medicaid services in 2021

EMERGENCY DEPT VISIT MOD MDM	48	$2,972
EMERGENCY DEPARTMENT VISIT HIGH MDM	18	$1,482

2020

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Largest Medicaid services in 2020

EMERGENCY DEPARTMENT VISIT HIGH MDM	173	$15,006

2019

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Largest Medicaid services in 2019

EMERGENCY DEPARTMENT VISIT HIGH MDM	81	$6,921
EMERGENCY DEPT VISIT MOD MDM	89	$5,877
EMERGENCY DEPT VISIT LOW MDM	14	$689

2018

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Largest Medicaid services in 2018

EMERGENCY DEPARTMENT VISIT HIGH MDM	81	$5,768
EMERGENCY DEPT VISIT MOD MDM	73	$4,299
EMERGENCY DEPT VISIT LOW MDM	33	$1,257

Drugs they prescribed that Part D paid

$178

Pharmacies billed $178 in 2024.

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

16 generic and 0 brand-name prescriptions · $178 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.

Year by year

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Part D prescribing by year

2024	16	13	None	0%	$178
2023	17	16	0% (0)	None	$189
2022	18	13	None	None	$292
2019	31	23	None	None	$922
2018	36	29	None	None	$1,162
2017	68	44	None	None	$11,123
2016	91	70	28% (25)	14%	$5,200
2015	62	42	31% (19)	None	$1,260

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

See the drugs prescribed each year

2016: 1 drug

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Part D drugs prescribed in 2016

Hydrocodone-Acetaminophen	21	$104	$5

2015: 1 drug

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Part D drugs prescribed in 2015

Hydrocodone-Acetaminophen	17	$145	$9

Checkups this office reported

Medicare did not publish checkup rates for this clinician.

Medicare’s overall office score: 76.5 / 100; Scores the office’s reporting and systems. It is not a grade for how the doctor treats you.

Professional record

NPI: 1750657953
Licence: CA A126780California A126780: Current · expires 2027-08-31

More record details

Sole proprietor: No
Taxonomy: Federal specialty code 207P00000X (207P00000X); Federal specialty code 207PE0004X (207PE0004X)
Mailing address: 300 Pasteur Dr, Stanford, CA, 94305
NPI first listed: 2012-04-02
NPI last updated: 2024-03-23
NPI record certified: 2024-03-23

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