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Dr. David P. Gruber, MD

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Specializes in: Pediatric Neurosurgery

Oregon Health & Science University School of Medicine (1992)

Professional interests include: pituitary disorders, brain surgery, cervical laminoplasty, and more.

105 West 8th Avenue Suite 200
Spokane, WA 99204

(509) 624-9112

Dr. David P. Gruber, MD is a pediatric neurosurgeon in Spokane, WA specializing in pediatric neurosurgery. He graduated from Oregon Health & Science University School of Medicine in 1992 and has 34 years of experience. Dr. David P. Gruber, MD is affiliated with Providence, Providence Holy Family Hospital and Sacred Heart Medical Center & Children's Hospital.

Office Locations

Sacred Heart Medical Center & Children's Hospital

105 West 8th Avenue Suite 200
Spokane, WA 99204

(509) 624-9112

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Some issues Dr. David P. Gruber, MD can help you with:

Craniotomy

Craniotomy and craniectomy are surgical procedures used to access the brain and treat tumors, intracranial pressure, or other conditions. These surgeries are performed by creating holes in the skull, or cranium, to expose the brain. The opening in the skull can be immediately replaced (craniotomy), or it can be replaced during a later procedure (craniectomy). The following procedures use craniotomy or craniectomy:

Brain biopsy, which is done by guiding a needle through the opening in the skull to the targeted area of the brain. This procedure may be performed through an open or minimally invasive approach. The minimally invasive approach, called stereotactic brain biopsy, uses a computer to guide the needle.
Brain tumor resection, which may be performed following a biopsy with image guidance. Depending on the size and location of the tumor, resection will require 2-5 hours.
Cerebrospinal fluid (CSF) leak repair, particularly for leaks that continue for a long period of time after a surgery. CSF leaks that are left untreated can lead to complications such as meningitis, an inflammation of the outer layers (meninges) of the brain.
Decompression, often following a stroke or injury. Decompressive craniotomy or craniectomy temporarily removes a flap from the skull to give the brain more room for swelling, which provides pressure relief.
Hematoma evacuation, which can also relieve pressure on the brain. A hematoma is a swelling of clotted blood. It can occur between the skull and the outer covering of the brain, or dura (epidural), between the dura and the brain (subdural), and within the brain (intracerebral). Craniotomy or craniectomy may be used to access and remove the hematoma.

To perform a craniotomy, the surgeon will need to make an incision on the scalp to expose the skull. Some of the hair may be shaved, and the scalp will be cleaned with antiseptic solution. Following the incision, the surgeon will use a drill to remove a piece of the skull, called a bone or skull flap. If the surgeon needs to reach a tumor or perform an aspiration, the dura, which covers the brain, will be incised (cut) to access the lesion. The bone flap will be reattached once the surgeon has completed the procedure. If the surgeon is performing a craniectomy, the same steps will be followed, but a mesh piece will be placed where the bone flap was, and the scalp will be surgically closed. Patients will need to wear a special helmet for a few months after the procedure. The bone flap will be preserved and replaced during a later operation, or it may never be replaced.

Patient recovery period can range from two days to two weeks, depending on the specific procedure and condition. Patient will require monitoring and may be given medication for pain or brain swelling. Patients will have to restrict their physical activity for some time after the procedure, and they may need to work with a physical therapist.

Hydrocephalus

Normally, the brain is bathed in a liquid called cerebrospinal fluid. This fluid cushions and nurtures the brain cells as it flows around and through the brain. Sometimes, cerebrospinal fluid does not get reabsorbed into the body properly, or a blockage in the brain can stop it from flowing. This causes a buildup of pressure called hydrocephalus. This condition affects a wide range of people, but it is much more prevalent among infants and older adults. Left untreated, hydrocephalus can cause uncomfortable symptoms, such as headaches and blurred vision, and eventually may cause brain damage.

Hydrocephalus is most often treated with an implanted device called a shunt. A shunt is a long, thin tube that is used to drain excess fluid. One end is placed within the brain. The tube runs under the skin, along the neck behind the ear, and to another part of the body where the fluid can be reabsorbed. Most often this is the abdomen, but the chest or other areas can also be used. Shunts have a valve that allows doctors to monitor and control the pressure within the brain. Insertion of a shunt is a surgical procedure that takes one to two hours. Incisions are made in the head and the abdomen, and the shunt is threaded into place before the openings are stitched closed.

In cases where hydrocephalus is caused by a blockage, a procedure called endoscopic third ventriculostomy, or ETV, may be performed. During this procedure, a surgeon makes a dime-sized hole in the skull and uses a thin tube with a camera on the end (called an endoscope) to see inside the brain. The surgeon punctures a hole in the floor of the third ventricle, a fluid-filled space within the brain. The hole provides an opening for cerebrospinal fluid to flow around the blockage, normalizing pressure. The entire procedure usually takes less than an hour and patients can often go home the following day. ETV can provide a permanent and safe alternative to a shunt, but it is only useful for patients whose hydrocephalus is caused by a blockage.

Spinal Fusion

Spinal fusion is a surgical procedure to permanently join together two or more vertebrae, the bones in the spine. Certain spinal disorders can lead to instability and pain, and the idea behind spinal fusion is that fusing vertebrae together can both make them stronger and reduce motion, which can sometimes reduce pain.

There are several different types of spinal fusion surgery available, mostly depending on where a patient's pain is located and whether his or her surgeon will perform the procedure through the back, front, or side. In general, a fusion is performed by packing the vertebrae to be fused with grafted bone. This bone may be taken from the patient's hip, may be donated from a cadaver, or it may be a manufactured synthetic material. The bone is placed along the vertebrae, and sometimes, the disc that lies in between the vertebrae is removed and replaced with grafted bone. The bone material will grow and cement the two vertebrae together. After the bone graft is placed, the vertebrae are sometimes held in place with rods, screws, plates, or cages, depending on the weakness of the spine and needs of the graft.

Spinal fusion is a significant surgery and can take three to four hours or more. Recovery is typically two to four days in the hospital. After surgery, it is important to remember that the fusion takes time to grow from the bone graft. So, the actual fusion is not complete for several months. Patients will probably feel somewhat better right away, but it may take a while to feel the full effects of the fusion as the bone grows into place. In the meantime, doctors might have patients wear a brace to protect their spine and keep it properly aligned.

Spinal fusion is not used for all kinds of back pain. Changing the way the spine moves can lead to strain on the other joints in the back, and fusion is only performed when the benefits outweigh the risks. Some spine disorders that are treated with fusion include:

Curvature disorders, such as scoliosis and kyphosis
Degenerative disc disease
Spondylolisthesis, a disorder that causes vertebrae to slip over each other
Significant spinal fractures that cause instability
Weakened spine due to infection or tumor
Some cases of spinal stenosis, a narrowing of the spinal column
Chronic lower back pain (although the use of fusion to treat this is controversial)

Regardless of the diagnosis, there is always a possibility of 'failure' with spinal fusion, or of the surgery not fully solving the pain. This is more likely when fusion is used primarily to treat pain instead of structural problems. Patients can improve their chances of a successful outcome by stopping smoking, maintaining a healthy weight, moving their body every day, and following their doctor's instructions for any physical therapy that they are prescribed.

In The News

“Both Clifford and Helen Higer were members of the First United Methodist Church of Everett.He is survived by his daughter, Judith Higer Gruber and his son-in-law, Dr. John B. Gruber, San Jose,...”—"Clifford E. Higer", Mercury News, April 2007

Noteworthy Medicare Patient Procedures Performed by Dr. David P. Gruber, MD in 2023

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

Top 25%

By Volume:

inpatient hospital care

In 2012, Dr. David P. Gruber, MD performed more inpatient hospital care (for patient admitted to hospital) procedures for Medicare patients than 75% of providers in related specialties within Washington.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. David P. Gruber, MD treated as a pediatric neurosurgeon in Spokane, WA during 2012 were hospital care, inpatient care, nerve procedures and decompression surgery.

Volume of procedures performed by Dr. David P. Gruber, MD for Medicare patients.

decompression surgery	30
doctor visit	233
hospital care	124
inpatient care	124
nerve procedures	30
spinal procedures	30

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. David P. Gruber, MD treated as a pediatric neurosurgeon in Spokane, WA during 2013 were hospital care, inpatient care, nerve procedures and decompression surgery.

Volume of procedures performed by Dr. David P. Gruber, MD for Medicare patients.

decompression surgery	20
doctor visit	208
hospital care	80
inpatient care	80
nerve procedures	20
spinal procedures	20

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. David P. Gruber, MD.

**Gender**
Male	110
Female	92

**Age**
From 65 to 74	85
From 75 to 84	71
85 and over	17
Less than 65	29

Conditions of Medicare patients treated by Dr. David P. Gruber, MD in 2013

Hypertension	58
High Cholesterol	44
Stroke	8
Ischemic Heart Disease	33
Depression	18
Chronic Kidney Disease	15
Asthma	6
Osteoperosis	7
Atrial Fibrilation	10
Heart Failure	11
Chronic Obstructive Pulmonary Disease	11
Diabetes	26
Dementia	10
Cancer	13

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. David P. Gruber, MD treated as a pediatric neurosurgeon in Spokane, WA during 2014 were hospital care, inpatient care, nerve procedures and decompression surgery.

Volume of procedures performed by Dr. David P. Gruber, MD for Medicare patients.

decompression surgery	34
doctor visit	272
hospital care	152
inpatient care	152
nerve procedures	34
spinal procedures	34

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. David P. Gruber, MD.

**Gender**
Male	147
Female	143

**Ethnicity**
Non-Hispanic White	271
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	115
From 75 to 84	93
85 and over	31
Less than 65	51

Conditions of Medicare patients treated by Dr. David P. Gruber, MD in 2014

Hypertension	65
High Cholesterol	46
Stroke	11
Ischemic Heart Disease	26
Depression	24
Chronic Kidney Disease	20
Asthma	8
Osteoperosis	11
Atrial Fibrilation	10
Heart Failure	11
Chronic Obstructive Pulmonary Disease	15
Diabetes	28
Dementia	14
Cancer	10

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. David P. Gruber, MD treated as a pediatric neurosurgeon in Spokane, WA during 2015 were hospital care, inpatient care, spinal procedures and nerve procedures.

Volume of procedures performed by Dr. David P. Gruber, MD for Medicare patients.

decompression surgery	42
doctor visit	303
hospital care	166
inpatient care	166
nerve procedures	42
spinal procedures	68

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. David P. Gruber, MD.

**Gender**
Male	300
Female	308

**Ethnicity**
Non-Hispanic White	580
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	244
From 75 to 84	202
85 and over	66
Less than 65	96

Conditions of Medicare patients treated by Dr. David P. Gruber, MD in 2015

Hypertension	64
High Cholesterol	47
Stroke	13
Ischemic Heart Disease	25
Depression	28
Chronic Kidney Disease	22
Asthma	11
Osteoperosis	10
Atrial Fibrilation	11
Heart Failure	14
Chronic Obstructive Pulmonary Disease	13
Diabetes	29
Dementia	10
Cancer	10

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. David P. Gruber, MD treated as a pediatric neurosurgeon in Spokane, WA during 2016 were hospital care, inpatient care, spinal procedures and nerve procedures.

Volume of procedures performed by Dr. David P. Gruber, MD for Medicare patients.

arthrodesis (bone fusion surgery)	12
decompression surgery	47
doctor visit	296
hospital care	136
inpatient care	136
neck surgery	12
nerve procedures	47
spinal procedures	81

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. David P. Gruber, MD.

**Gender**
Male	161
Female	134

**Ethnicity**
Non-Hispanic White	277
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	135
From 75 to 84	91
85 and over	28
Less than 65	41

Conditions of Medicare patients treated by Dr. David P. Gruber, MD in 2016

Hypertension	64
High Cholesterol	47
Stroke	13
Ischemic Heart Disease	26
Depression	23
Chronic Kidney Disease	30
Asthma	20
Osteoperosis	5
Atrial Fibrilation	11
Heart Failure	13
Chronic Obstructive Pulmonary Disease	16
Diabetes	31
Dementia	14
Cancer	8

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. David P. Gruber, MD treated as a pediatric neurosurgeon in Spokane, WA during 2017 were hospital care, inpatient care, spinal procedures and nerve procedures.

Volume of procedures performed by Dr. David P. Gruber, MD for Medicare patients.

arthrodesis (bone fusion surgery)	13
decompression surgery	62
doctor visit	265
hospital care	121
inpatient care	121
neck surgery	27
nerve procedures	62
spinal procedures	114

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. David P. Gruber, MD.

**Gender**
Male	160
Female	131

**Ethnicity**
Non-Hispanic White	277
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	123
From 75 to 84	102
85 and over	30
Less than 65	36

Conditions of Medicare patients treated by Dr. David P. Gruber, MD in 2017

Hypertension	62
High Cholesterol	43
Stroke	12
Ischemic Heart Disease	30
Depression	29
Chronic Kidney Disease	29
Asthma	12
Osteoperosis	10
Atrial Fibrilation	11
Heart Failure	17
Chronic Obstructive Pulmonary Disease	19
Diabetes	30
Dementia	11
Cancer	12

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. David P. Gruber, MD treated as a pediatric neurosurgeon in Spokane, WA during 2018 were hospital care, inpatient care, spinal procedures and nerve procedures.

Volume of procedures performed by Dr. David P. Gruber, MD for Medicare patients.

decompression surgery	29
doctor visit	224
hospital care	131
inpatient care	131
nerve procedures	29
spinal procedures	41

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. David P. Gruber, MD.

**Gender**
Male	126
Female	144

**Ethnicity**
Non-Hispanic White	243
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	124
From 75 to 84	92
85 and over	22
Less than 65	32

Conditions of Medicare patients treated by Dr. David P. Gruber, MD in 2018

Hypertension	65
High Cholesterol	48
Stroke	13
Ischemic Heart Disease	21
Depression	28
Chronic Kidney Disease	29
Asthma	9
Osteoperosis	11
Atrial Fibrilation	10
Heart Failure	12
Chronic Obstructive Pulmonary Disease	11
Diabetes	26
Dementia	12
Cancer	9

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. David P. Gruber, MD treated as a pediatric neurosurgeon in Spokane, WA during 2019 were hospital care, inpatient care, spinal procedures and nerve procedures.

Volume of procedures performed by Dr. David P. Gruber, MD for Medicare patients.

decompression surgery	47
doctor visit	234
hospital care	107
inpatient care	107
nerve procedures	47
spinal procedures	80

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. David P. Gruber, MD.

**Gender**
Male	126
Female	130

**Ethnicity**
Non-Hispanic White	233
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	123
From 75 to 84	75
85 and over	20
Less than 65	38

Conditions of Medicare patients treated by Dr. David P. Gruber, MD in 2019

Hypertension	64
High Cholesterol	50
Stroke	11
Ischemic Heart Disease	25
Depression	29
Chronic Kidney Disease	32
Asthma	6
Osteoperosis	12
Atrial Fibrilation	10
Heart Failure	13
Chronic Obstructive Pulmonary Disease	14
Diabetes	32
Dementia	12
Cancer	10

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. David P. Gruber, MD treated as a pediatric neurosurgeon in Spokane, WA during 2020 were hospital care, inpatient care, spinal procedures and nerve procedures.

Volume of procedures performed by Dr. David P. Gruber, MD for Medicare patients.

decompression surgery	32
doctor visit	170
hospital care	92
inpatient care	92
nerve procedures	32
spinal procedures	60

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. David P. Gruber, MD.

**Gender**
Male	117
Female	100

**Ethnicity**
Non-Hispanic White	201
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	110
From 75 to 84	72
85 and over	16
Less than 65	19

Conditions of Medicare patients treated by Dr. David P. Gruber, MD in 2020

Hypertension	65
High Cholesterol	47
Stroke	12
Ischemic Heart Disease	30
Depression	33
Chronic Kidney Disease	30
Asthma	9
Osteoperosis	9
Atrial Fibrilation	13
Heart Failure	15
Chronic Obstructive Pulmonary Disease	17
Diabetes	30
Dementia	11
Cancer	13

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. David P. Gruber, MD treated as a pediatric neurosurgeon in Spokane, WA during 2021 were hospital care, inpatient care, spinal procedures and nerve procedures.

Volume of procedures performed by Dr. David P. Gruber, MD for Medicare patients.

decompression surgery	28
doctor visit	209
hospital care	61
inpatient care	61
nerve procedures	28
spinal procedures	51

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. David P. Gruber, MD.

**Gender**
Male	114
Female	102

**Ethnicity**
Non-Hispanic White	194
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	103
From 75 to 84	80
85 and over	16
Less than 65	17

Conditions of Medicare patients treated by Dr. David P. Gruber, MD in 2021

Hypertension	67
High Cholesterol	51
Stroke	11
Ischemic Heart Disease	30
Depression	28
Chronic Kidney Disease	32
Asthma	7
Osteoperosis	12
Atrial Fibrilation	10
Heart Failure	12
Chronic Obstructive Pulmonary Disease	11
Diabetes	29
Dementia	12
Cancer	17

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. David P. Gruber, MD treated as a pediatric neurosurgeon in Spokane, WA during 2022 were hospital care, inpatient care, spinal procedures and nerve procedures.

Volume of procedures performed by Dr. David P. Gruber, MD for Medicare patients.

arthrodesis (bone fusion surgery)	12
decompression surgery	20
doctor visit	167
hospital care	76
inpatient care	76
nerve procedures	20
spinal procedures	60

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. David P. Gruber, MD.

**Gender**
Male	96
Female	93

**Ethnicity**
Non-Hispanic White	170
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	88
From 75 to 84	67
85 and over	12
Less than 65	22

Conditions of Medicare patients treated by Dr. David P. Gruber, MD in 2022

Hypertension	73
High Cholesterol	68
Stroke	30
Ischemic Heart Disease	17
Depression	29
Chronic Kidney Disease	16
Asthma	10
Osteoperosis	11
Atrial Fibrilation	16
Heart Failure	13
Chronic Obstructive Pulmonary Disease	12
Diabetes	28
Dementia	7
Cancer	17

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. David P. Gruber, MD for Medicare patients.

The highest averages for the top procedures that Dr. David P. Gruber, MD treated as a pediatric neurosurgeon in Spokane, WA were hospital care, inpatient care, spinal procedures and nerve procedures.

arthrodesis (bone fusion surgery)	12
decompression surgery	35
doctor visit	234
hospital care	113
inpatient care	113
neck surgery	19
nerve procedures	35
spinal procedures	58

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. David P. Gruber, MD.

**Gender**
Male	132
Female	125

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	222
Native American / Alaskan Native	0
Hispanic	0
Other	0

**Age**
75 to 84	85
85 and over	23
Less than 65	34
65 to 74	113

Average of Total of Conditions of Medicare patients treated by Dr. David P. Gruber, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. David P. Gruber, MD treated were hypertension, high cholesterol, diabetes and depression.

Hypertension	58
High Cholesterol	44
Stroke	12
Ischemic Heart Disease	23
Depression	24
Chronic Kidney Disease	23
Asthma	8
Osteoporosis	8
Heart Failure	11
Chronic Obstructive Pulmonary Disease	12
Diabetes	26
Atrial Fibrillation	10
Cancer	10
Dementia	10

Education & Training

Dr. David P. Gruber, MD graduated from Oregon Health & Science University School of Medicine in 1992. He completed residency at University of Cincinnati Affiliated Hospitals. He is certified by the American Board of Neurological Surgery, Neurological Surgery and has a state license in Washington.

Medical School: Oregon Health & Science University School of Medicine (1992)

Residency: University of Cincinnati Affiliated Hospitals (1998)

Board Certification: American Board of Neurological Surgery, Neurological Surgery

Licensed In: Washington

Affiliations & Hospitals

Dr. David P. Gruber, MD is associated with these hospitals and organizations:

Providence

Providence Holy Family Hospital

Sacred Heart Medical Center & Children's 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. David P. Gruber, MD appears to accept the following insurance providers: Molina Healthcare, Medicare Advantage, Providence, Amerigroup, TriWest, Medicaid, Kaiser Permanente, Premera PPO, InterWest Health, Asuris Northwest Health, First Choice PPO, Coordinated care WA Apple Health, ChoiceHumana PPO and Community Health Plan of Washington WA Apple Health.

Insurance Accepted by Provider includes:

According to our sources, Dr. David P. Gruber, MD accepts the following insurance providers:

Molina Healthcare

Medicare Advantage

Providence

Amerigroup

TriWest

Medicaid

Kaiser Permanente

Premera PPO

InterWest Health

Asuris Northwest Health

First Choice PPO

Coordinated care WA Apple Health

ChoiceHumana PPO

Community Health Plan of Washington WA Apple Health

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General Payments

These charts describe general payments received by Dr. David P. Gruber, MD. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
Globus Medical, Inc.	$5,142 ELSA $1,533	Spine $1,159	MARS Lateral ALIF $425	RISE-L $388	Excelsius - GPS $378	Other $1,258
DePuy Orthopaedics Inc.	$220 neurovascular $220
Medtronic USA, Inc.	$95 STRATA $69	O-ARM-ST $26
KLS Martin L.P.	$71 $71
Medtronic Xomed, Inc.	$51 STRATA $41	Advanced Energy Cutting Device $11
Other	$157 EUCRISA $38	MIDAS REX $30	Osteogenesis Stimulators $19	HAKIM $19	Senza Spinal Cord Stimulation System $16	Other $35

**Types of Payments**
Travel and Lodging	$4,542
Food and Beverage	$932
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	$220
Consulting Fee	$30
Entertainment	$12

Biography

Dr. David Gruber is a Spokane, WA physician who specializes in pediatric neurosurgery. Clinical interests for Dr. Gruber include oligodendroglioma, meningioma, and endoscopic third ventriculostomy (ETV). Dr. Gruber is affiliated with Providence Holy Family Hospital. Before performing his residency at a hospital affiliated with the University of Cincinnati, Dr. Gruber attended Oregon Health & Science University School of Medicine. He most likely takes Amerigroup, Molina Healthcare, and Providence, as well as other insurance carriers.