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Dr. Alexander Mark Papanastassiou, MD

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Specializes in: Neurosurgery

University of California, San Francisco (UCSF), School of Medicine (2002)

Professional interests include: lumbar decompression, traumatic brain injury, craniotomy, and more.

7703 Floyd Curl Drive Mc7843
San Antonio, TX 78229

(210) 567-5625

Dr. Alexander Mark Papanastassiou, MD is a neurosurgeon in San Antonio, TX specializing in neurosurgery. He graduated from University of California, San Francisco (UCSF), School of Medicine in 2002 and has 22 years of experience. Dr. Alexander Mark Papanastassiou, MD is affiliated with University Health System, Baptist Health System, UT Health Physicians, Baptist Hospital and UT Health San Antonio.

Office Locations

Address:

7703 Floyd Curl Drive Mc7843
San Antonio, TX 78229

Address:

7940 Floyd Curl Drive Tower Ii Suite 300
San Antonio, TX 78229

Some issues Dr. Alexander Mark Papanastassiou, 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.

Spinal Cord Injury

Spinal cord injury medicine is a branch of medicine that treats damage to the spinal cord from an injury or a nontraumatic myelopathy, which is any disorder that affects the spinal area. The spinal cord is a section of nerve tissue protected by the vertebrae (spinal bones). Trauma to the spinal cord, typically caused by compression or bent vertebrae, prevents the body and brain from communicating. This can result in pain, loss of sensation, and impaired physical function and movement. Acute spinal cord injuries (SCIs) are a leading cause of permanent disability. Spinal cord injuries may develop from accidents or myelopathies, disorders that provoke spinal compression. Traumatic incidents such as falls, sports injuries, vehicle accidents, and bullet or stab wounds can cause an acute spinal cord injury.

Spinal cord injury medicine seeks to stabilize the spine and to alleviate the symptoms of spine damage. Practitioners of spinal cord injury medicine are called spinal cord injury specialists. Spinal cord injury medicine is an interdisciplinary field, meaning physicians of various specialties may be trained to treat spinal cord injuries.

Damage to the spinal cord may initially be diagnosed through X-ray, MRI, or CT scans. Patients can also undergo spinal exams to evaluate their sensory ability and strength. Injuries to the spinal cord can be complete (no feeling or sensation) or incomplete (some feeling or sensation remains). Conditions spinal cord injury medicine specialists may treat include:

Paralysis, such as paraplegia (loss of function in the legs), or quadriplegia (loss of function from the neck down)
Spine fracture or trauma, which can lead to impairment and/or significant pain
Spinal infections
Myelopathies, such as herniated disks, spinal tumors, and rheumatoid arthritis
Inflammatory diseases such as ankylosing spondylosis, and degenerative conditions like Lou Gehrig's disease (ALS)

Treatment for spinal cord injuries often involves surgery, either directly after an injury occurs or at a later date. Surgery for spine injuries is intended to ease spinal compression and stabilize the spine. Surgical procedures can involve shifting vertebrae, removing bone, or altering spinal placement with implantable devices. Patients with significant spinal trauma may require urgent surgical intervention.

Surgical treatments can be complemented by rehabilitative physical therapy to improve mobility. Spinal cord injury specialists also treat complications arising from a spinal injury, such as respiratory or bladder conditions. Some patients with spinal cord injuries may require lifelong treatment. Spinal cord injury specialists aim to help these patients successfully adjust and lead an improved quality of life. An emerging treatment for spinal cord injuries is neural prosthetics, which replicate patients' lost nerve function. Neural prostheses may be used as artificial body parts or assistive devices that patients may cognitively control. Other assistive devices include wheelchairs and scooters.

Spinal cord injury specialists may collaborate with physical therapists, radiologists, neurologists, urologists, and orthopedists.

doctor visit	84
hospital care	32
inpatient care	32

**Gender**
Male	51
Female	54

**Ethnicity**
Non-Hispanic White	53
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	22
From 75 to 84	30
85 and over	15
Less than 65	38

Hypertension	70
High Cholesterol	52
Stroke	27
Ischemic Heart Disease	30
Depression	45
Chronic Kidney Disease	31
Asthma	13
Osteoperosis	15
Atrial Fibrilation	0
Heart Failure	23
Chronic Obstructive Pulmonary Disease	15
Diabetes	37
Dementia	28
Cancer	10

doctor visit	56
hospital care	57
inpatient care	57

**Gender**
Male	61
Female	63

**Ethnicity**
Non-Hispanic White	67
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	38
From 75 to 84	37
85 and over	14
Less than 65	35

Hypertension	75
High Cholesterol	59
Stroke	28
Ischemic Heart Disease	47
Depression	37
Chronic Kidney Disease	31
Asthma	10
Osteoperosis	0
Atrial Fibrilation	11
Heart Failure	26
Chronic Obstructive Pulmonary Disease	15
Diabetes	34
Dementia	23
Cancer	11

doctor visit	82
hospital care	41
inpatient care	41

**Gender**
Male	150
Female	158

**Ethnicity**
Non-Hispanic White	174
Black	0
Hispanic	112
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	106
From 75 to 84	72
85 and over	26
Less than 65	104

Hypertension	75
High Cholesterol	56
Stroke	29
Ischemic Heart Disease	40
Depression	38
Chronic Kidney Disease	36
Asthma	17
Osteoperosis	9
Atrial Fibrilation	10
Heart Failure	27
Chronic Obstructive Pulmonary Disease	12
Diabetes	38
Dementia	20
Cancer	15

doctor visit	71
hospital care	49
inpatient care	49

**Gender**
Male	91
Female	67

**Ethnicity**
Non-Hispanic White	90
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	58
From 75 to 84	42
85 and over	15
Less than 65	43

Hypertension	75
High Cholesterol	59
Stroke	30
Ischemic Heart Disease	35
Depression	39
Chronic Kidney Disease	35
Asthma	16
Osteoperosis	11
Atrial Fibrilation	14
Heart Failure	24
Chronic Obstructive Pulmonary Disease	17
Diabetes	41
Dementia	32
Cancer	16

doctor visit	30
hospital care	42
inpatient care	42

**Gender**
Male	76
Female	76

**Ethnicity**
Non-Hispanic White	90
Black	0
Hispanic	51
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	54
From 75 to 84	36
85 and over	25
Less than 65	37

Hypertension	75
High Cholesterol	55
Stroke	24
Ischemic Heart Disease	39
Depression	43
Chronic Kidney Disease	41
Asthma	9
Osteoperosis	9
Atrial Fibrilation	16
Heart Failure	23
Chronic Obstructive Pulmonary Disease	14
Diabetes	35
Dementia	37
Cancer	15

doctor visit	40
hospital care	37
inpatient care	37

**Gender**
Male	77
Female	81

**Ethnicity**
Non-Hispanic White	89
Black	0
Hispanic	55
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	47
From 75 to 84	34
85 and over	21
Less than 65	56

Hypertension	72
High Cholesterol	54
Stroke	20
Ischemic Heart Disease	35
Depression	45
Chronic Kidney Disease	37
Asthma	10
Osteoperosis	13
Atrial Fibrilation	16
Heart Failure	18
Chronic Obstructive Pulmonary Disease	13
Diabetes	39
Dementia	35
Cancer	11

cranial surgery	12
doctor visit	51
hospital care	35
implant surgery	17
inpatient care	35
neurostimulator lead placement	12
neurostimulator replacement	17

**Gender**
Male	68
Female	66

**Ethnicity**
Non-Hispanic White	70
Black	0
Hispanic	51
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	52
From 75 to 84	30
85 and over	18
Less than 65	34

Hypertension	74
High Cholesterol	62
Stroke	22
Ischemic Heart Disease	41
Depression	48
Chronic Kidney Disease	49
Asthma	8
Osteoperosis	12
Atrial Fibrilation	13
Heart Failure	23
Chronic Obstructive Pulmonary Disease	17
Diabetes	42
Dementia	37
Cancer	9

doctor visit	32
hospital care	12
inpatient care	12

**Gender**
Male	53
Female	41

**Ethnicity**
Non-Hispanic White	55
Black	0
Hispanic	0
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	29

Hypertension	69
High Cholesterol	62
Stroke	17
Ischemic Heart Disease	45
Depression	43
Chronic Kidney Disease	36
Asthma	0
Osteoperosis	13
Atrial Fibrilation	12
Heart Failure	21
Chronic Obstructive Pulmonary Disease	20
Diabetes	28
Dementia	22
Cancer	14

cranial surgery	15
doctor visit	137
hospital care	13
implant surgery	15
inpatient care	13
neurostimulator lead placement	15
neurostimulator replacement	15

Average Medicare Procedure Volume From 2013 - 2021

Volume of procedures performed by Dr. Alexander Mark Papanastassiou, MD for Medicare patients.

The highest averages for the top procedures that Dr. Alexander Mark Papanastassiou, MD treated as a neurosurgeon in San Antonio, TX were hospital care, inpatient care, neurostimulator replacement and implant surgery.

cranial surgery	13
doctor visit	68
hospital care	35
implant surgery	16
inpatient care	35
neurostimulator lead placement	13
neurostimulator replacement	16

Average Medicare Patient Data From 2013 - 2021

Information about Medicare patients treated by Dr. Alexander Mark Papanastassiou, MD.

**Gender**
Male	62
Female	60

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	68
Native American / Alaskan Native	0
Hispanic	26
Other	0

**Age**
75 to 84	28
85 and over	13
Less than 65	37
65 to 74	41

Average of Total of Conditions of Medicare patients treated by Dr. Alexander Mark Papanastassiou, MD From 2013 - 2021

The highest averages of the most common conditions of Medicare patients that Dr. Alexander Mark Papanastassiou, MD treated were hypertension, high cholesterol, depression and ischemic heart disease.

Hypertension	58
High Cholesterol	45
Stroke	19
Ischemic Heart Disease	31
Depression	33
Chronic Kidney Disease	29
Asthma	8
Osteoporosis	8
Heart Failure	18
Chronic Obstructive Pulmonary Disease	12
Diabetes	29
Atrial Fibrillation	9
Cancer	10
Dementia	23

Education & Training

Dr. Alexander Mark Papanastassiou, MD graduated from University of California, San Francisco (UCSF), School of Medicine in 2002. He completed residency at Brigham and Women's Hospital. He is certified by the American Board of Neurological Surgery and has a state license in Massachusetts.

Medical School: University of California, San Francisco (UCSF), School of Medicine (2002)

Residency: Brigham and Women's Hospital (2009)

Board Certification: American Board of Neurological Surgery

Licensed In: Massachusetts

Affiliations & Hospitals

Dr. Alexander Mark Papanastassiou, MD is associated with these hospitals and organizations:

University Health System

Baptist Health System

UT Health Physicians

Baptist Hospital

UT Health San Antonio

Ratings & Reviews

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General Payments

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

**Payments by Company**
IRRAS USA, Inc.	$3,436 IRRASflow $3,246	$190
Medtronic USA, Inc.	$1,532 O-ARM-ST $1,226	VISUALASE $169	Deep Brain Neurostimulation $105	ACTIVA $30	AQUAMANTYS $2	Other $1
NeuroPace, Inc.	$1,256 RNSSystem $904	RNS System $326	RNS Neurostimulator Kit $26
Medtronic, Inc.	$404 VISUALASE $197	CD HORIZON SPINAL SYSTEM $151	OSTEOCOOL RF ABLATION SYSTEM $56
LivaNova USA, Inc.	$247 VNS Therapy $247
Other	$1,886 VNS Therapy $215	NeuroBlate $198	Deep Brain Neurostimulation $181	GENERAL DBS $132	Thinflap $123	Other $1,036

**Types of Payments**
Food and Beverage	$3,708
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	$3,436
Travel and Lodging	$1,569
Entertainment	$48

Biography

Dr. Alexander Papanastassiou is a spinal cord injury medicine and neurosurgery specialist. Dr. Papanastassiou graduated from the University of California, San Francisco (UCSF), School of Medicine and then he performed his residency at Brigham and Women's Hospital. His areas of clinical interest consist of cerebrovascular disease, craniotomy, and lumbar decompression. He has received a 5.0 out of 5 star rating by his patients. In addition to English, he speaks Spanish. His professional affiliations include the University Health, UT Health Physicians, and Baptist Health System. According to Doctor.com, Dr. Papanastassiou is currently accepting new patients at his office in San Antonio, TX.

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Dr. Alexander Mark Papanastassiou, MD

Office Locations

Some issues Dr. Alexander Mark Papanastassiou, MD can help you with:

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

2013 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Alexander Mark Papanastassiou, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Alexander Mark Papanastassiou, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Alexander Mark Papanastassiou, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Alexander Mark Papanastassiou, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Alexander Mark Papanastassiou, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Alexander Mark Papanastassiou, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Alexander Mark Papanastassiou, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Alexander Mark Papanastassiou, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

Average Medicare Procedure Volume From 2013 - 2021

Average Medicare Patient Data From 2013 - 2021

Average of Total of Conditions of Medicare patients treated by Dr. Alexander Mark Papanastassiou, MD From 2013 - 2021

Education & Training

Affiliations & Hospitals

Ratings & Reviews

General Payments

Biography

Other Providers in San Antonio, TX