Dr. Bennett Machanic

Neurology
Denver, CO
54 years experience male

Locations

Bennett I Machanic MD LLC

Denver, CO

Address

3955 East Exposition Ave., Ste. 104, E Exposition Ave, Denver, CO, US
Directions

My office hours

Thursday: 9:00am - 12pm
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Insurances accepted

Aetna

BlueCross BlueShield

Aetna Life Insurance Company

American Family Mutual Insurance Company

Anthem BC Life & Health Insurance Company

Blue Cross Blue Shield of Illinois

Cigna

CIGNA Health Care

Golden Rule Insurance Company

Great-West Healthcare

Optum

Pacificare Life & Health Insurance Company

Rocky Mountain Health Plan

State Farm Insurance Companies

United HealthCare Insurance Company

Humana Insurance Company

Medicare

Medicaid

Tricare

Blue Cross Blue Shield of Texas

State Farm Mutual Automobile Insurance Company

Bennett I Machanic MD LLC

Denver, CO

About

Bio

Born and grew up in Vermont. Went to medical school in Baltimore, Johns Hopkins, and did an internship at Georgetown in Washington, followed by military service, and resumption of training in neurology at UCLA. I had a small solo private practice and taught throughout the Western United States, mainly in the area of Multiple Sclerosis, but closed practice during COVID-19. Do research with newer MS drugs, and have a large ongoing Celiac Disease study. Did highly sophisticated electromyography with newer techniques which are described in two surgical textbooks, and the second textbook is now available. (Thoracic Outlet Syndrome and other disorders of the brachial plexus, 2nd Edition). Have performed thousands of skin punch biopsies to evaluate small fiber peripheral neuropathies.

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.

Neurology

Licenses

United States: California, Colorado, Colorado

Languages spoken

English

Doctor Q&A

15K Answers
12K Agrees
The number of answers this doctor has agreed with.
A 42-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
Excellent question: Subtle problems early on can be very misleading and indeed, can confuse docs. Some common early signs include loss of vision in one eye, weakness in ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 21-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
10% of the time: Familial ALS is a small fraction, as 90% are sporadic, and about a quarter of the familial cases involve genetic encoding of copper/zinc superoxide di... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 46-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
Unfortunately many: Most common causes in my practice involves repetitive head trauma in sports, and motor vehicle accidents, but is very frequent in military, and can be... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 47-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
Maybe: If the optic neuritis was caused by multiple sclerosis, it is best to take potent disease modifying items, such as Gilenya or tysabri, (natalizumab) a... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 27-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
Chemical loss: Alzheimer's is a multi-neurotransmitter deficiency syndrome, with damage to acetylcholine, epinephrine, serotonin, some glutamate pathways, etc. Ther... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 40-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
Chronic daliy HA's: Migraine is a hereditary condition where headaches can be triggered by a variety of issues, such as foods, red wines, stress, weather changes, etc. H... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 52-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
Tough to predict: The course of ms is variable, and no two patients are ever alike. One might hope, in the end, that the outcome is mild or benign, but it is almost im... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 25-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
Paralysis: Paraplegia means bilateral leg paralysis, and spasticity is a knife clasp catching due to increased tone in the paralyzed legs. This can be very pain... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 48-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
Similar to women: At least 28 million americans have migraine. The attacks are triggered by external or internal events, and there is strong heredity. Provacation from ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 40-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
Surgical: If a ruptured aneurysm or arteriovasc malformation is the culprit, surgery may be critical. If we cannot localize the source of bleeding, supportive ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 44-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
Stupor and coma: Classical stages include lethargy, stupor, semi-coma and full coma. All of this is based on the area of the brain which is mostly affected, and the fi... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 33-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
Nasty: Result of thiamine deficiency in alcoholics or malnourished pts., confusion, hallucinations, delusions, memory loss, double vision, gait incoordinati... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 21-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
Likely: If this is meningococcal, it could be very contagious, but other forms may likewise put you at risk. Contact your doctor asap, and decided whether pr... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 21-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
Interesting history: When lou gehrig died, no autopsy was ever done, and it was thought that he did suffer als, but retrospective analysis raises question of what we now k... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 21-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
Always surgical risk: Modern tos surgery is relatively safe, with good success rates, but surgery is not always perfect. Complication rates have dropped dramatically over ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 21-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
If you are receiving: Immune suppressant agents to prevent organ rejection, you should be very careful, as the virus could be much more malignant under those scenarios.
Created for people with ongoing healthcare needs but benefits everyone.
A 21-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
Lumbar puncture: Although you do not specify your symptoms, a spinal tap is employed to help diagnose multiple sclerosis, increased intracranial pressure, various infe... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 21-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
Classical MS: MS is an autoimmune disorder of brain, spinal cord and eye causing disability in younger females and less often males The R/R form most common with ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 21-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
Quite rare: May be due to tetanus shots, but there is a time limitation to value, and best to re-inoculate after several years.
Created for people with ongoing healthcare needs but benefits everyone.
A 32-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
Maybe no problem: Arteriovenous malformation of brain or spinal cord is a genetic malformation which may be small and inconsequential, but if it ruptures and bleeds cou... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 25-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
Great question: Have no clue. Probably some genetic susceptibility for certain types of tumors, and we do know that pts taking certain immunosuppressant meds are at ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 22-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
Not directly: Lungs become an issue during periods of terminal disability and debility, when terminal pneumonia occurs. Usually, potent disease modifying agents pr... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 36-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
FATIGUE AND SLEEP: This is a complex question. We are finding that sleep disorders, such as narcolepsy and restless leg syndrome can be associated with ms, and some res... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 36-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
Prevention: If these are awakening you in midst of night, these could be cluster headache variants or some other headache variant, and best to use preventative me... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 23-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
In the year 2021, we can do spinal fluid analysis for amyloid and tau, do MRI scan with characteristic patterns, get PET scan using amyloid tagging, a... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 40-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
Consistent with: A generalized convulsive seizure.
Created for people with ongoing healthcare needs but benefits everyone.
A 24-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
No: Trauma never causes MS. However, additional injury can create added disability if one already has MS.
Created for people with ongoing healthcare needs but benefits everyone.
A 40-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
Susceptibility: We know of several hla markers which increase genetic susceptibililty to ms: the best described is hla-dr-b-1, but dr1 and dr2 are also involved. Li... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 38-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
Trial and error: Some of the newer drugs have less adverse effects. Perhaps best tolerated is lamictal, but maybe vimpat (lacosamide). Need to work closely with your... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 53-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
Immunological: The lumbar puncture assesses presence of inflammation such as elevation of white blood cells, and increase of protein. A screen for infections is inc... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 23-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
NO: Although it occurs in those who are genetically susceptible, such as HLA-B-1*1501, in absence of added environmental factors, would not arise. Not a ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 16-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
Do not know cause: A small percentage of cases are genetic or associated with frontotemporal dementias. Sporadic ALS is a disease associated with a misfolded protein, c... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 25-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
Not genetic disorder: Ms does seem to run in families, but does not occur as a hereditary condition. Rather, our genetic makeup confers either susceptibility or protection... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 44-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
It doesn't: MS affects brain, spinal cord, and eyes. Does not directly affect other internal organs or "spread".
Created for people with ongoing healthcare needs but benefits everyone.
A 25-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
Parsonage-Turner: The plexus can be involved in widespread nerve disorders, such a nutritional deficiency or diabetes, but can be a site of tumor spread such as lung or... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 40-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
Sleep disorder: When patients lay down at night their legs feel irritable, even tingly, and there is a challenge to get comfortable. They get out of bed and walk aro... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 35-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
Risk modification: Multiple studies on alzheimer's show that some dietary measures lower risk, and some vitamin supplements also may help, but all of this is complicated... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 44-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
Many causes: Hyperthyroidism, familial essential tremors, parkinson's disease, medications (e.g., depakote), too much caffeine, amphetamines, cerebellar problems (... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 28-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
Records brain: Electrical activity occurs thruout the body, and like an electrocardiogram recording heart activity, small discs are taped to specific areas of the sc... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 23-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
Variable: Conceive that ingestion or contact with the prion infection could result in the disease, so best not to eat the raw meat, or even the cooked meat, if ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 21-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
Get relapse treated: All significant relapses should be treated ASAP. Choices include oral or intravenous steroids, injections of ACTH, plasmapheresis, and if pregnant, I... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 21-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
NO: ALS is a degenerative disease of the motor neuron and is NOT a contagious or infectious disease.
Created for people with ongoing healthcare needs but benefits everyone.
A 21-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
Complex: Multiple sclerosis is an issue of genetic susceptibility, not the usual heredity, and risk runs about 3-5% if mother has it, 1-2% if father has it. B... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 21-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
Maybe: But only one of many possibilities, and would first consideration carpal tunnel syndrome or cubital tunnel syndrome, with pinched nerve in neck anothe... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 22-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
Hopefully yes: Critical is an early diagnosis and immediate use of such drugs. Outcomes these days are far better with modern treatment, but as noted, time is of th... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 35-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
Radiation vrs magnet: Cat scanning employs radiation, MRI uses magnet technology. Ct better in looking at bones, larger structures, and MRI better with soft tissue. For b... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 34-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
Brain activity: Eeg is a test of physiological function, and records brain electical activity (like electrocardiogram for heart). It is used to check for seizure act... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 37-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
Rather doubtful: Multiple myeloma can be confirmed through blood and urine studies and even analysis of bone marrow. Since MS is a disease of brain, spinal cord, and ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 32-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
End organ effect: If brain receives inadequate blood flow, this can cause a stroke, and if multiple small strokes occur, this creates a "lacunar state", which can surel... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 33-year-old member asked:
Dr. Bennett Machanic
Neurology 47 years experience
Based on situation: If an aneurysm or ateriovenous malformation has caused problem, surgical repair may be life saving. If a subdural or epidural hemorrhage, best to dec... 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.

54
Recommendations
12K
Thank you notes
Dr. Jan Lei Iwata
Jul 7, 2014
I find Dr. Machanic to be a distinguished, caring, compassionate, and dedicated neurologist specializing in such difficult, complex cases. I feel lucky to know him thru the HealthTap network, as he ha...Read More
Jul 15, 2014
Dr. Machanic is a phenomenal asset to HealthTap. His recommendations are spot-on and his years of experience certainly shines through. I even find myself learning from his knowledge in the field of Ne...Read More
Mar 21, 2014
Dr. Machanic represents one of the most accomplished professionals in our network at Healthtap.com His answers are extremely valuable for users and professionals equally, and his opinion is regarded w...Read More
HealthTap member
EMG/EEG-normal, thyroid-normal,Lspine 26degree w/rotary component,T-spine 17degree opposite curve, it all started when I got sick in january, that was when the shock thing happened, the pain over 4hou...Read More
HealthTap member
Thank you very much Dr. Machanic. Yes, I did have an EMG study done and it was negative. I was wondering if a DIR of gray matter can help diagnose MS vs. conventional MRIs. In other words, are there ...Read More
HealthTap member
This made me feel good. Thanks! Thank you very much. I really appreciate your opinion. You said that my thymus is little and it is unlikely to become myasthenia gravis. That made me feel good and not ...Read More

Education & Training

Medical/Graduate school

Johns Hopkins University School of Medicine
Graduated 1969MD

Residency

Ronald Reagan UCLA Medical Center

Residency

DC General Hospital

Awards

TOP NEUROLOGIST IN THE USA
2022
Top Founding Knowledge Editor, First Place, National - Winter
2016
Most Influential Doctor, Second Place, Colorado - Spring
2016

Affiliations

Colorado Society of Clinical Neurology
American Academy of Neurology
Rose medical center
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