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Dr. Jefferson Chen

Neurosurgery
Portland, OR
35 years experience male

Locations

Office

Portland, OR

Address

501 N. Graham # 580, Portland, OR, US
Directions

Insurances accepted

Aetna

BlueCross BlueShield

Medicare

UnitedHealthcare

CIGNA Health Care

Providence Health Plans

LifeWise Health Plan of Oregon

Office

Portland, OR

Office

Portland, OR

About

Bio

My neurosurgery practice is focused at Legacy Emanuel Hospital in the neurosurgery subspecialties of: 1. NeuroTrauma and NeuroCritical Care -Surgical treatment of head injury and specific types of stroke -Neurological ICU management with multimodal brain monitoring (ICP, Brain oxygen, Brain flow, Brain chemistry) 2. Brain Tumors (both primary and metastatic) -Surgical treatment using modern neurosurgical techniques (neuronavigation, Awake Craniotomies, Brainpath) -Radiosurgery techniques using Gamma Knife (framed technique) and Novalis(frameless technique) technologies 3. Normal Pressure Hydrocephalus I actively participate in local and national/international research and clinical trials in these fields. I am active in local supprot groups for these patients.

Specialties
Doctors may have more than one area of specialty interest. Board certification in a specialty area means the doctor has completed formal training and has practice experience in that specialty, and has passed the certification examination from the corresponding accredited medical specialty board.

Neurosurgery

Doctor Q&A

704 Answers
305 Agrees
The number of answers this doctor has agreed with.
A 43-year-old female asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
Possibly: Any time there is something that stresses the brain, this can exacerbate the seizures and make them more difficult to control. For example, stress fro... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 28-year-old female asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
Peripheral nerve: If the pain is just in the region from the elbow down, you need to consider a compression either on the ulnar or the median nerve. These are nerves th... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 43-year-old member asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
Concussion: The fracture itself will likely heal on its own so long as it was a closed fracture. The concern about the brain is real as you likely had a concussio... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 50-year-old member asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
Neurologist: Your neurologist can give you good advice on the treatment options for the myasthenia gravis which can include medications as well as surgery. The sug... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 20-year-old male asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
Neuropathy: Your skin and fingers are innervated by numerous nerve endings that generate sensation that is transmitted to the brain. If these nerve endings are in... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 23-year-old male asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
Metabolism: The outward appearance that you describe may be related to the metabolism of the patient. They may be able to break down all that junk food so that th... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A female asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
Watch closely: If there is any abnormality in his behavior go to the er. Look for any vomiting, poor appetite, increased fussiness, a bruise on the head, increased s... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 35-year-old member asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
CT angiogram: A regular ct scan might detect a large aneurysm with calcium. A test that is designed specifically to look for aneurysms is the ct angiogram. With thi... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 25-year-old female asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
Probably not: Your symptoms are probably related to the sinus issues that you discuss. Brain tumors in most cases tend to present with focal neurologic symtpoms (we... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 43-year-old member asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
Difficult question: It is possible to have a lesion (ie. Tumor or stroke) that affects the motor regions in the brain but spares the sensory cortex. Don't forget that the... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 44-year-old member asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
Achondroplasia: Achondroplasia occurs in 1/15, 000 to 1/40, 000 births and results in a defect in the cartilage formation. This is a common cause of dwarfism. The con... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 22-year-old female asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
Not likely: As i understand the question, you are concerned about getting fat after giving a blood donation. The process of giving blood does not lead to that. Yo... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 21-year-old female asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
Lymphoma: I think you mean lymphoma. This is a type of cancer that affects blood cells called t and b lymphocytes. These usually present as a solid tumor of the... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 32-year-old female asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
Difficult question: Not exactly sure of the history, but it seems that you are saying that you hear a thump in the ear when you bend or push. There was a 2 month history ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 25-year-old male asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
Back mechanics: The most common cause of back problems in a young person is back strain. You may need to modify your work/excercise activities so that you have better... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 39-year-old member asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
See doctor: You should have a careful work-up by a pediatric neurologist. It is likely that they will order an MRI scan of the brain to make certain that there is... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 34-year-old member asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
Treat conservatively: Back pain in a 34 year old is most likely from muscle strain. This will improve over time and with medications like tylenol (acetaminophen) or Ibuprof... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 36-year-old member asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
Neurologist: It is unusual for someone that is 36 to have degenerative brain disease. However, in general, neurologist are good at evaluating and making the diagno... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 21-year-old member asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
Teflon: Generally for a microvascular decompression an inert substance like a sterile teflon pledget is used to pad the nerve. This helps to shield the nerv... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 43-year-old member asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
Get Help: Frequently patient with cancer are fall risks because they are frail and in poor health. Add to that the side effects of chemotherapy and radiation th... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 53-year-old female asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
It should not: The purpose of the coils was to obliterate the aneurysm from the inside. This will withstand the blood pressure pulsations from within and protect the... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 44-year-old female asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
Should be followed: This depends on the size of the area of concern. Also, is there any contrast enhancement associated with it? If there is, that is more concerning. Som... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 33-year-old female asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
Unclear: It depends on the characteristics of the "black holes" that you see on the mri. Although they are in the white matter, there are some characteristic a... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 38-year-old member asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
It may take time: If i interpret your question correctly, you have had a concussion and have had a ct scan that was negative. Your physician has made the diagnosis of c... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 43-year-old member asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
Usually not: Patients with brain tumors usually do not have photosensitivity as a common symptom or complaint. However, if there is direct involvement of the optic... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 49-year-old male asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
CT scans: Ct scans are better for showing fractures, particularly older fractures. They will show up as areas of increased density or callous on the ct scans an... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 45-year-old member asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
A tough situation: This is a tough situation and a social dilemma. The first thing is to get information about the tumor type. Remember not all brain tumors are lethal.... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 23-year-old female asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
Have it checked: There may be local nerve damage if there was a large bruise over the eyebrow. There may also be an underlying skull fracture. Generally this is from ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 23-year-old female asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
Seek medical help: You should have this checked out. There is a concern for infection. This can be severe and can lead to meningitis. The er is a good place to start and... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 34-year-old member asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
Pubmed: If your are looking for very technical information, the best is to go to the original research articles. Those that are in pubmed are peer reviewed. M... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 33-year-old member asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
Yes: The fact that there are different types of cancers-ie.Brain, lung, breast, colon, pancreas- to name just a few tells us that the cancerous tumors can ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 45-year-old member asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
CT, LP: Start with the clinical symptoms which are usually headache. The classic symptom is the "worst headache" of one's life. Cat scans are very good for de... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 23-year-old male asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
Different situations: It depends on the clinical situation. If there is a mass lesion in the brain that causes a differential pressure between the supratentorial and infrat... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 52-year-old male asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
Depends on tumor : The questions seems to be if you had a 13 cm tumor removed, how long has it been present? That would depend on the type of tumor. Non-cancerous tumors... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 31-year-old member asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
Seek medical help: Without knowing specifics, its hard to say. But speaking with your family doctor may help to direct the course of diagnostic studies if any. There are... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 32-year-old member asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
Nerves in dura: It is true that there are no nerves in the brain that sense pain. However, there are nerves in the linings of the brain, the dura that have pain modal... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 31-year-old member asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
Depends on the stage: Chemotherapy is a useful adjunct in the treatment of stomach cancers. However, this depends in part on the stage of the cancer. Cancers that are local... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 34-year-old member asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
Can be cumulative: Most patients recover from a single concussion with little neurological sequelae. However, multiple concussions can lead to long term effects such as ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 37-year-old member asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
Location and size: The location and the size of the intracerebral hemorrhage as well as the interventions done can affect the outcome. Also the co-morbidities (ie. Other... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 84-year-old female asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
Unlikely: The cause of your anemia is not likely to be from an avm of the brain. There are numerous other potential causes. These should be worked up. The othe... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A female asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
See your doctor: This is an unusual symptom. There are brain tumors of the temporal lobe that can lead to olfactory auras or hallucinations. Patients typically descri... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 38-year-old member asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
Yes: Memory loss is the most common symptom of alzheimer's. However, alzheimer's dementia refers to a global decline in cognitive abilities. Problems with ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 38-year-old member asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
Have it evaluated: It is certainly possible that some of the headaches may be related to surgical healing. However, there are well known long term sequelae from brain an... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 25-year-old female asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
Mutations: Ionizing radiation such as used in the past for tinea capitis (ringworm of the scalp) has been shown to have an increased incidence of meningiomas. It... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 35-year-old member asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
Still debated: There is a lot of data that suggests that cavernous malformations are not effectively treated by stereotactic radiosurgery. Surgery is the preferred t... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 41-year-old female asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
CardioVascular: Cv disease generally refers to cardiovascular disease. These are diseases that involve the heart and blood vessels. This includes heart attacks and co... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 33-year-old member asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
Very serious: The seriousness of a brain hemorrhage depends on the size, location and cause. Invariably, there are neurological issues. The degree of recovery is al... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 63-year-old female asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
Usually No: It sounds like you have a tumor (usually a meningioma or schwannoma) attached to the trigeminal nerve. This can cause the facial pain that you note. W... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 33-year-old member asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
Guarded, but depends: The hypothalamus is a critical region and a stroke-either hemorrhagic or ischemic can have profound symptoms. It depends on the extent and size of the... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 26-year-old male asked:
Dr. Jefferson Chen
Neurosurgery 35 years experience
Unlikely if removed: Surgical removal of the avm leads to obliteration of the nidus. If there is angiographic demonstration that this is gone, then it is not likely that i... Read More
Created for people with ongoing healthcare needs but benefits everyone.

Testimonials
Recommendations and Thank you notes are endorsements given from patients or other doctors.

10
Recommendations
536
Thank you notes
Apr 24, 2013
Dr. Chen provides an exceptional public service on Healthtap. He is clearly extremely knowledgable about neurosurgery. I learn from reading the information he presents on health tap. I recommend Dr. C...Read More
Apr 22, 2013
Has always taken time for me when I've called to request help off him. Has always treated me as a respected colleague and I'm grateful to know he's there for me should my patients' needs arisenn
Jul 6, 2013
Dr. Chen provides articulate, helpful answers about complicated neurosurgical/neurological topics. He writes calmly and respectfully too. Thank you, Dr. Chen!
HealthTap member
This was very helpful. Thanks! My CT-scan had similar finding and I didn't understand any of it. Your response was very helpful because I do have trouble walking and a difficult time moving my left ar...Read More
HealthTap member
Thank you, your answer was very helpful! Thank you! I was referencing pain that does move around her body, I will definitely schedule and appointment.
HealthTap member
Is there anything I should do or is time the only thing that heals this? I cracked the back of my skull, released from the icu without info.

Education & Training

Medical/Graduate school

Johns Hopkins University School of Medicine
Graduated 1987MD

Medical/Graduate school

Johns Hopkins University School of Medicine
Graduated 1987MD

Residency

University of California San Diego Medical Center

Residency

University of California San Diego Medical Center

Awards

Top Doctors, Portland Monthly Magazine
Thought Leader, Second Place, Portland, OR - Winter
2013
Top Neurosurgeon , Second Place, National - Winter
2013

Affiliations

American College of Surgeons
American Association of Neurological Surgeons / Congress of Neurological Surgeons, Cerebrovascular Section
Society of Critical Care Medicine
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