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Home > CA Providers > Neurosurgeons

Dr. William Jacob Mack IV, MD

(16 Ratings)

Specializes in: Neurosurgery

Columbia University, College of Physicians and Surgeons

Professional interests include: endovascular disease

1751 Foothill Boulevard Suite 2 Suite 2
La Canada Flintridge, CA 91011

(818) 952-2171

Dr. William Jacob Mack IV, MD is a neurosurgeon in Los Angeles, CA specializing in neurosurgery. He graduated from Columbia University, College of Physicians and Surgeons. Dr. William Jacob Mack IV, MD is affiliated with Keck Medicine of USC, Dignity Health, Keck Medical Center of USC, Northridge Hospital Medical Center and USC Arcadia Hospital.

Office Locations

Keck Medical Center of USC

1441 Eastlake Avenue
Los Angeles, CA 90033

1-800-872-2273

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Keck Medical Center of USC

1520 San Pablo Street Hc2 - Suite 3800 Hc2 - Suite 3800
Los Angeles, CA 90033

(323) 442-5720

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Keck Medical Center of USC

1751 Foothill Boulevard Suite 2 Suite 2
La Canada Flintridge, CA 91011

(818) 952-2171

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Keck Medical Center of USC

300 W. Huntington Drive
Arcadia, CA 91007

1-888-388-2838

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In The News

“Nguyen was in a coma when she arrived at Keck Hospital of USC, where two neurosurgeons - Russin and Dr. William Mack - studied scans of her brain.”—"Column: In 2015, her life was in his hands. Now doctor and patient will run L.A. Marathon together", Yahoo News, March 2022

“Dr. William Mack is a neurointerventional surgeon and cerebrovascular surgeon at the University of Southern California in Los Angeles.”—"Opinion | How treating strokes like car crashes could save lives", NBC News, March 2021

“It was there that Dr. William Mack, associate professor of neurological surgery, discovered the ruptured aneurysm through a CAT scan.”—"Woman runs LA Marathon with USC neurosurgeon who helped save her life", Los Angeles Daily News, February 2016

Noteworthy Medicare Patient Procedures Performed by Dr. William Jacob Mack IV, MD in 2023

Click on any procedure below to see further details on volume and pricing among Medicare patients.

Top 5%

By Affordability:

carotid angiogram

carotid arteriogram

cervicocerebral arteriogram

cervicocerebral angiogram

In 2023, Dr. William Jacob Mack IV, MD had a list price for carotid angiogram, carotid arteriogram, cervicocerebral arteriogram, and cervicocerebral (head and neck) angiogram that was lower than the list prices billed to Medicare by 95% of providers in related specialties within California. Actual amounts paid by patients can vary widely depending on a number of factors, including insurance coverage. A lower list price, however, might mean lower fees when paying without insurance.

Top 10%

By Volume:

embolization

spinal embolization

In 2023, Dr. William Jacob Mack IV, MD performed more embolization, and spinal embolization procedures for Medicare patients than 90% of providers in related specialties within California.

Top 25%

By Volume:

carotid arteriogram

vascular procedures

By Affordability:

vertebral angiogram

vertebral arteriogram

In 2012, among providers in related specialties within California, Dr. William Jacob Mack IV, MD performed more carotid arteriogram, and vascular procedures procedures for Medicare patients than 75% of them and he also had a list price for vertebral angiogram, and vertebral arteriogram that was lower than the list prices billed to Medicare by 75% of them. Actual amounts paid by patients can vary widely depending on a number of factors, including insurance coverage. A lower list price, however, might mean lower fees when paying without insurance.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

Volume of procedures performed by Dr. William Jacob Mack IV, MD for Medicare patients.

doctor visit	15

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. William Jacob Mack IV, MD treated as a neurosurgeon in Los Angeles, CA during 2013 were vascular procedures.

Volume of procedures performed by Dr. William Jacob Mack IV, MD for Medicare patients.

doctor visit	36
vascular procedures	42

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. William Jacob Mack IV, MD.

**Gender**
Male	19
Female	26

**Ethnicity**
Non-Hispanic White	13
Black	0
Hispanic	21
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	18
From 75 to 84	13
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. William Jacob Mack IV, MD in 2013

Hypertension	75
High Cholesterol	67
Stroke	64
Ischemic Heart Disease	51
Depression	31
Chronic Kidney Disease	0
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	42
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. William Jacob Mack IV, MD treated as a neurosurgeon in Los Angeles, CA during 2014 were vascular procedures, hospital care, inpatient care and minimally invasive procedures.

Volume of procedures performed by Dr. William Jacob Mack IV, MD for Medicare patients.

catheterization	19
doctor visit	45
hospital care	48
inpatient care	48
minimally invasive procedures	19
spinal procedures	19
vascular procedures	78

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. William Jacob Mack IV, MD.

**Gender**
Male	27
Female	50

**Ethnicity**
Non-Hispanic White	31
Black	0
Hispanic	28
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	33
From 75 to 84	21
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. William Jacob Mack IV, MD in 2014

Hypertension	75
High Cholesterol	66
Stroke	47
Ischemic Heart Disease	51
Depression	36
Chronic Kidney Disease	38
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	29
Chronic Obstructive Pulmonary Disease	0
Diabetes	42
Dementia	21
Cancer	0

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. William Jacob Mack IV, MD treated as a neurosurgeon in Los Angeles, CA during 2015 were vascular procedures, minimally invasive procedures and thrombectomy (blood clot removal).

Volume of procedures performed by Dr. William Jacob Mack IV, MD for Medicare patients.

doctor visit	21
minimally invasive procedures	12
thrombectomy (blood clot removal)	12
vascular procedures	105

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. William Jacob Mack IV, MD.

**Gender**
Male	54
Female	76

**Ethnicity**
Non-Hispanic White	48
Black	0
Hispanic	50
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	58
From 75 to 84	0
85 and over	0
Less than 65	40

Conditions of Medicare patients treated by Dr. William Jacob Mack IV, MD in 2015

Hypertension	75
High Cholesterol	69
Stroke	60
Ischemic Heart Disease	40
Depression	35
Chronic Kidney Disease	31
Asthma	18
Osteoperosis	0
Atrial Fibrilation	18
Heart Failure	28
Chronic Obstructive Pulmonary Disease	18
Diabetes	45
Dementia	26
Cancer	0

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. William Jacob Mack IV, MD treated as a neurosurgeon in Los Angeles, CA during 2016 were vascular procedures.

Volume of procedures performed by Dr. William Jacob Mack IV, MD for Medicare patients.

doctor visit	46
vascular procedures	59

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. William Jacob Mack IV, MD.

**Gender**
Male	30
Female	46

**Ethnicity**
Non-Hispanic White	25
Black	0
Hispanic	30
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	35
From 75 to 84	19
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. William Jacob Mack IV, MD in 2016

Hypertension	74
High Cholesterol	74
Stroke	57
Ischemic Heart Disease	57
Depression	24
Chronic Kidney Disease	46
Asthma	18
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	22
Chronic Obstructive Pulmonary Disease	18
Diabetes	43
Dementia	21
Cancer	0

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. William Jacob Mack IV, MD treated as a neurosurgeon in Los Angeles, CA during 2017 were vascular procedures.

Volume of procedures performed by Dr. William Jacob Mack IV, MD for Medicare patients.

doctor visit	38
vascular procedures	44

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. William Jacob Mack IV, MD.

**Gender**
Male	25
Female	39

**Ethnicity**
Non-Hispanic White	17
Black	0
Hispanic	29
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	33
From 75 to 84	17
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. William Jacob Mack IV, MD in 2017

Hypertension	75
High Cholesterol	67
Stroke	47
Ischemic Heart Disease	55
Depression	34
Chronic Kidney Disease	38
Asthma	0
Osteoperosis	19
Atrial Fibrilation	0
Heart Failure	22
Chronic Obstructive Pulmonary Disease	23
Diabetes	33
Dementia	31
Cancer	0

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. William Jacob Mack IV, MD treated as a neurosurgeon in Los Angeles, CA during 2018 were vascular procedures.

Volume of procedures performed by Dr. William Jacob Mack IV, MD for Medicare patients.

doctor visit	67
vascular procedures	85

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. William Jacob Mack IV, MD.

**Gender**
Male	32
Female	52

**Ethnicity**
Non-Hispanic White	31
Black	0
Hispanic	30
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	37
From 75 to 84	0
85 and over	0
Less than 65	21

Conditions of Medicare patients treated by Dr. William Jacob Mack IV, MD in 2018

Hypertension	75
High Cholesterol	67
Stroke	50
Ischemic Heart Disease	44
Depression	29
Chronic Kidney Disease	39
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	24
Chronic Obstructive Pulmonary Disease	17
Diabetes	50
Dementia	15
Cancer	0

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. William Jacob Mack IV, MD treated as a neurosurgeon in Los Angeles, CA during 2019 were vascular procedures.

Volume of procedures performed by Dr. William Jacob Mack IV, MD for Medicare patients.

doctor visit	45
vascular procedures	59

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. William Jacob Mack IV, MD.

**Gender**
Male	35
Female	31

**Ethnicity**
Non-Hispanic White	28
Black	0
Hispanic	21
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	30
From 75 to 84	19
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. William Jacob Mack IV, MD in 2019

Hypertension	75
High Cholesterol	73
Stroke	41
Ischemic Heart Disease	52
Depression	30
Chronic Kidney Disease	41
Asthma	0
Osteoperosis	18
Atrial Fibrilation	20
Heart Failure	24
Chronic Obstructive Pulmonary Disease	0
Diabetes	29
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. William Jacob Mack IV, MD treated as a neurosurgeon in Los Angeles, CA during 2020 were vascular procedures, minimally invasive procedures, catheterization and spinal procedures.

Volume of procedures performed by Dr. William Jacob Mack IV, MD for Medicare patients.

catheterization	18
doctor visit	16
minimally invasive procedures	18
spinal procedures	18
vascular procedures	86

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. William Jacob Mack IV, MD.

**Gender**
Male	26
Female	40

**Ethnicity**
Non-Hispanic White	29
Black	0
Hispanic	16
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	35
From 75 to 84	13
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. William Jacob Mack IV, MD in 2020

Hypertension	75
High Cholesterol	74
Stroke	56
Ischemic Heart Disease	59
Depression	27
Chronic Kidney Disease	50
Asthma	0
Osteoperosis	0
Atrial Fibrilation	20
Heart Failure	36
Chronic Obstructive Pulmonary Disease	20
Diabetes	42
Dementia	23
Cancer	0

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. William Jacob Mack IV, MD treated as a neurosurgeon in Los Angeles, CA during 2021 were vascular procedures.

Volume of procedures performed by Dr. William Jacob Mack IV, MD for Medicare patients.

doctor visit	27
vascular procedures	58

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. William Jacob Mack IV, MD.

**Gender**
Male	30
Female	42

**Ethnicity**
Non-Hispanic White	26
Black	0
Hispanic	23
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	30
From 75 to 84	20
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. William Jacob Mack IV, MD in 2021

Hypertension	75
High Cholesterol	75
Stroke	46
Ischemic Heart Disease	49
Depression	29
Chronic Kidney Disease	53
Asthma	0
Osteoperosis	19
Atrial Fibrilation	17
Heart Failure	31
Chronic Obstructive Pulmonary Disease	19
Diabetes	49
Dementia	19
Cancer	0

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. William Jacob Mack IV, MD treated as a neurosurgeon in Los Angeles, CA during 2022 were vascular procedures.

Volume of procedures performed by Dr. William Jacob Mack IV, MD for Medicare patients.

doctor visit	64
vascular procedures	81

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. William Jacob Mack IV, MD.

**Gender**
Male	42
Female	51

**Ethnicity**
Non-Hispanic White	42
Black	0
Hispanic	23
Asian	13
Other	0
Native American	0

**Age**
From 65 to 74	42
From 75 to 84	29
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. William Jacob Mack IV, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	73
Ischemic Heart Disease	43
Depression	28
Chronic Kidney Disease	26
Asthma	0
Osteoperosis	19
Atrial Fibrilation	30
Heart Failure	30
Chronic Obstructive Pulmonary Disease	13
Diabetes	44
Dementia	14
Cancer	0

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. William Jacob Mack IV, MD for Medicare patients.

The highest averages for the top procedures that Dr. William Jacob Mack IV, MD treated as a neurosurgeon in Los Angeles, CA were vascular procedures, hospital care, inpatient care and catheterization.

catheterization	18
doctor visit	38
hospital care	48
inpatient care	48
minimally invasive procedures	16
spinal procedures	18
thrombectomy (blood clot removal)	12
vascular procedures	69

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. William Jacob Mack IV, MD.

**Gender**
Male	29
Female	41

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	1
Non-Hispanic White	26
Native American / Alaskan Native	0
Hispanic	24
Other	0

**Age**
75 to 84	13
85 and over	0
Less than 65	5
65 to 74	31

Average of Total of Conditions of Medicare patients treated by Dr. William Jacob Mack IV, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. William Jacob Mack IV, MD treated were hypertension, high cholesterol, stroke and ischemic heart disease.

Hypertension	68
High Cholesterol	64
Stroke	49
Ischemic Heart Disease	45
Depression	27
Chronic Kidney Disease	32
Asthma	3
Osteoporosis	6
Heart Failure	22
Chronic Obstructive Pulmonary Disease	11
Diabetes	38
Atrial Fibrillation	9
Dementia	15
Cancer	0

Education & Training

Dr. William Jacob Mack IV, MD graduated from Columbia University, College of Physicians and Surgeons. He is certified by the Neurological Surgery and has a state license in California.

Medical School: Columbia University, College of Physicians and Surgeons

Board Certification: Neurological Surgery

Licensed In: California

Affiliations & Hospitals

Dr. William Jacob Mack IV, MD is associated with these hospitals and organizations:

Keck Medicine of USC

Dignity Health

Keck Medical Center of USC

Northridge Hospital Medical Center

USC Arcadia Hospital

Insurance Information

Please note: Insurance information may change at any time, and the provider may accept your insurance plan even if it is not listed below. Please contact the provider's office to confirm that your insurance is accepted.

Dr. William Jacob Mack IV, MD appears to accept the following insurance providers: Humana ChoiceCare Network, Great-West Healthcare, Blue Shield of California, MultiPlan, TriWest, Interplan, Aetna, United Healthcare, Medicare, Cigna, Coventry, GEHA, Anthem, First Health, Private Healthcare Systems (PHCS), Beech Street, Health Net, PacifiCare, Brand New Day, Marian Health Services, Watchtower, Health Net Covered California, Kern Health Systems, Laundry and Dry Cleaning Workers Health & Welfare, Take Care (GUAM), USC Network, Union Roofers Health & Welfare Fund, Blue Shield Covered California, Presbyterian Intercommunity Hospital, NEXT and Health Plans of Nevada.

Insurance Accepted by Provider includes:

According to our sources, Dr. William Jacob Mack IV, MD accepts the following insurance providers:

Humana ChoiceCare Network

Great-West Healthcare

Blue Shield of California

MultiPlan

TriWest

Interplan

Aetna

United Healthcare

Medicare

Cigna

Coventry

GEHA

Anthem

First Health

Private Healthcare Systems (PHCS)

Beech Street

Health Net

PacifiCare

Brand New Day

Marian Health Services

Watchtower

Health Net Covered California

Kern Health Systems

Laundry and Dry Cleaning Workers Health & Welfare

Take Care (GUAM)

USC Network

Union Roofers Health & Welfare Fund

Blue Shield Covered California

Presbyterian Intercommunity Hospital

Health Plans of Nevada

Ratings & Reviews

Dr. William Jacob Mack IV, MD has an exceptional overall rating with an average of 5.0 out of 5 stars based on 16 ratings. We collect ratings and reviews of Dr. William Jacob Mack IV, MD from all over the web to help you find the right in Los Angeles, CA.

Overall Rating

(16 Ratings)

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General Payments

These charts describe general payments received by Dr. William Jacob Mack IV, MD. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
Imperative Care, INc	$4,468 ZOOM 88-T LARGE DISTAL PLATFORM $4,265	ZoomReperfusionCatheter $193	Imperative Care TracStar $10
Medtronic USA, Inc.	$2,729 Solitaire $2,514	React $190	PIPELINE $18	Axium $7
Medtronic Vascular, Inc.	$2,486 IntraStent $2,250	Thrombectomy $236
Penumbra, Inc.	$2,150 Penumbra System $1,705	Penumbra Coil 400 $243	Penumbra Ruby Coil $94	Apollo $77	Benchmark $30
Stryker Corporation	$1,805 Excelsior $747	NEURO $281	Trevo $178	ATLAS $149	DAC $120	Other $329
Other	$2,391 Barricade Coil System $825	NEUROLOGICAL PRODUCT $268	VIZ.AI LVO $198	LEKSELL VANTAGE STEREOTACTIC SYSTEM $162	ENTERPRISE $110	Other $829

**Types of Payments**
Consulting Fee	$8,850
Food and Beverage	$4,428
Travel and Lodging	$2,451
Entertainment	$198
Education	$102

Research Payments

Dr. William Jacob Mack IV, MD has received 12 research payments totaling $100,295.

Ownership and Interest Payments

This table describes ownership payments received by Dr. William Jacob Mack IV, MD.

Imperative Care, INc

2021

$80,730.00

Physician Covered Recipient

Preferred Shares

Biography

Dr. William Mack is a specialist in neurosurgery. Dr. Mack's areas of clinical interest consist of neurosurgery and endovascular disease. His professional affiliations include Keck Medical Center of USC, Northridge Hospital Medical Center, and USC Arcadia Hospital. He is a graduate of Columbia University, College of Physicians and Surgeons. Patients gave him an average rating of 5.0 stars (out of 5). Dr. Mack can take Anthem, PacifiCare, Blue California, and more. Distinctions awarded to Dr. Mack include: Southern California Super Doctors and Southern California Rising Stars. Unfortunately, according to Dignity Health, he is not currently accepting new patients.