U.S. doctors online nowAsk doctors free

Dr. Bennett Machanic

Neurology
Denver, CO
53 years experience male

Locations

Bennett I Machanic MD LLC

Denver, CO

Address

P.O. BOX 100159, Denver, CO, United States
Directions

My office hours

Tuesday: 9:00am - 4:00pm
Show more

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 internship at Georgetown in Washington, followed by military service, and resumption of training in Los Angeles. 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 Surgical textbooks, and a second textbook, now released. (Thoracic Outlet Syndrome and other disorders of the brachial plexus, 2nd Edition).

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

Languages spoken

English

Doctor Q&A

13K Answers
11K Agrees
The number of answers this doctor has agreed with.
A 37-year-old member asked:
Dr. Bennett Machanic
Neurology 53 years experience
Maybe: Best to avoid radiation during pregnancy, so preferrable to do MRI instead, which involves magnetic pulses. If past the first 6 weeks, perhaps risk to... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 29-year-old member asked:
Dr. Bennett Machanic
Neurology 53 years experience
Carpal tunnel : Most common cause is nerve compression at the wrist due to fluid changes in pregnancy narrowing the carpal tunnel.. This is annoying and perhaps caus... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A member asked:
Dr. Bennett Machanic
Neurology 53 years experience
Depends on cause: If viral, usually self limited and rather benign, but if bacterial, antibiotics are crucial, if fungal, anti fungal drugs, if tuberculous, specific dr... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 37-year-old member asked:
Dr. Bennett Machanic
Neurology 53 years experience
Perhaps these: Pregnancy is not the time for triptans or many prescription drugs. Some patients do well breathing 100% oxygen, as needed, and there seems to be litt... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 21-year-old member asked:
Dr. Bennett Machanic
Neurology 53 years experience
Not long: Typically, about 3-5 years after diagnosis.
Created for people with ongoing healthcare needs but benefits everyone.
A 21-year-old member asked:
Dr. Bennett Machanic
Neurology 53 years experience
No: MS is not an infectious disorder. Instead, there is varying genetic susceptibility triggered by environmental influences.
Created for people with ongoing healthcare needs but benefits everyone.
A 21-year-old member asked:
Dr. Bennett Machanic
Neurology 53 years experience
Everyone different: No ms pt is similar to another. One drug does not fit all. That said, it is now felt, based on current knowledge, that in the first 1-5 yrs, it is be... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 21-year-old member asked:
Dr. Bennett Machanic
Neurology 53 years experience
Any age: As far as i know, a human of any age can be attacked by a vicious mosquito and get infected. Cerebral involvement is most common with falciparum vari... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 45-year-old member asked:
Dr. Bennett Machanic
Neurology 53 years experience
No, just subacute: Once started this prion infection steadily progresses to inevitable demise, and seems to affect mainly middle aged adults. So truly a fairly rapid co... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 44-year-old member asked:
Dr. Bennett Machanic
Neurology 53 years experience
MS relapses: Steroids such as cortisone can be used to treat relapses, but should not be used chronically due to adverse event potential. These drugs should only ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 34-year-old member asked:
Dr. Bennett Machanic
Neurology 53 years experience
On occasion: But more often is sporadic without family history. May be related to problems with iron metabolism.
Created for people with ongoing healthcare needs but benefits everyone.
A 27-year-old member asked:
Dr. Bennett Machanic
Neurology 53 years experience
Most are not: Numerous organisms can infect brain, and typically many viral infections have good recovery, but herpes simplex may be risky. Pml associated with HIV ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 37-year-old member asked:
Dr. Bennett Machanic
Neurology 53 years experience
Loss of consciousnes: Episodic seizures can cause loss of consciousness, and attendent injuries, especially if at heights or using power equipment or driving. Seizures eme... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 38-year-old member asked:
Dr. Bennett Machanic
Neurology 53 years experience
Obvious lesions: Cat is fast and helpful in er setting to rule out large intracranial masses or blood clots, and fractures of skull or sinus issues. Not so good for se... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 44-year-old member asked:
Dr. Bennett Machanic
Neurology 53 years experience
Demyelination: Complex, tip of iceberg. Ms causes loss of myelin over nerve processes, and often axonal transection. Brain signals are disrupted, and symptoms occu... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 31-year-old member asked:
Dr. Bennett Machanic
Neurology 53 years experience
Central nervous syst: 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 36-year-old member asked:
Dr. Bennett Machanic
Neurology 53 years experience
Non-existent: There is NO "natural replacement" for gabapentin, but several more effective meds with less side effects include Lyrica, (pregabalin) Horizant, and Gr... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 38-year-old member asked:
Dr. Bennett Machanic
Neurology 53 years experience
Depending on level: Critical elevation of blood sugar, such as ketoacidosis could be life threatening, and can affect brain function diffusely including coma. Peripheral... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 42-year-old member asked:
Dr. Bennett Machanic
Neurology 53 years experience
Education: The more we learn about our diagnostic tools, the more often we find both metabolic and anatomic changes with patients who suffer classical psychiatri... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 28-year-old member asked:
Dr. Bennett Machanic
Neurology 53 years experience
Blockade: Tumors within the ventricular system, such as colloid cyst of third ventricle, tumor in brainstem blocking aqueduct, communicating hydrocephalus as a ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 41-year-old member asked:
Dr. Bennett Machanic
Neurology 53 years experience
NO: Not sure why you have asked the question, as I am unfamiliar with any data relating sulfur to autoimmune disorders. Perhaps this is indirect regardin... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 29-year-old member asked:
Dr. Bennett Machanic
Neurology 53 years experience
Emergency?: Could well be an asymptomatic finding in pts on anti-coagulants, but could initially cause headaches, perhaps unilateral weakness, or leg weakness, an... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 36-year-old member asked:
Dr. Bennett Machanic
Neurology 53 years experience
Genetic disorder: This is a slowly progressive usually autosomal dominant (70%) disorder causing progressive weakness and spasticity (tightness and spasms) in the legs.... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 31-year-old member asked:
Dr. Bennett Machanic
Neurology 53 years experience
Chronic and acquired: Neurologists would include alzheimer's disease, head injury, the effect of alcohol abuse and thiamine deficiency, and pernicious anemia, as either irr... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 36-year-old member asked:
Dr. Bennett Machanic
Neurology 53 years experience
Many ways: Poor cognitive abilities especially programs with organization and planning, generalized fatigue and exhaustion, contributes to anxiety and depression... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 40-year-old member asked:
Dr. Bennett Machanic
Neurology 53 years experience
Maybe soon: A recent study has raised questions that this may be caused by an infection from prions, the small particles which cause creutzfeldt-jakob disease. I... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 27-year-old member asked:
Dr. Bennett Machanic
Neurology 53 years experience
Rarely use: Evoked potentials measure speed and amplitude of nerve function in eyes, ears, and spinal cord. May be used during surgery of neck or back to warn of... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 23-year-old member asked:
Dr. Bennett Machanic
Neurology 53 years experience
McDonald criteria: We look for "dissemination in space", or lesions both in different areas of brain, but also spinal cord, and "dissemination in time", presence of both... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 39-year-old member asked:
Dr. Bennett Machanic
Neurology 53 years experience
The following:: Bacteria of multiple types, including meningococci, pneumococci, etc. Viruses which can be airborne, arthropod borne, or of GI origin. Also, tubercu... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 28-year-old member asked:
Dr. Bennett Machanic
Neurology 53 years experience
Nerve pinching: Various causes in order of frequency: carpal tunnel syndrome (due to keyboarding?), ulnar nerve at elbow, problems in shoulder area (thoracic outlet, ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 39-year-old member asked:
Dr. Bennett Machanic
Neurology 53 years experience
Bad illness: Lose ability to move eyes properly, lose ability to balance and walk, have twisting dystonic posture of spine. Not curable or easily treated, and ho... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 53-year-old member asked:
Dr. Bennett Machanic
Neurology 53 years experience
No blood test: Cannot diagnose via blood or urine testing. Spinal fluid may correlate or confirm. MRI the best current test.
Created for people with ongoing healthcare needs but benefits everyone.
A 21-year-old member asked:
Dr. Bennett Machanic
Neurology 53 years experience
Usually not: Pain is not usually a prominent presenting symptom in ALS, but can occur due to spasticity, muscle spasms, and even co-morbities. About 50% of cases ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 21-year-old member asked:
Dr. Bennett Machanic
Neurology 53 years experience
Not rare: Have found celiac disease to often present with small fiber neuropathies, i.e., pain, numbness, and poor temperature sensation in feet and distal legs... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 22-year-old member asked:
Dr. Bennett Machanic
Neurology 53 years experience
To effectively deal with a peripheral nerve disorder, important to uncover cause and treat this condition. Symptomatic drugs to suppress nerve pain a... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 48-year-old member asked:
Dr. Bennett Machanic
Neurology 53 years experience
If not treated: Untreated MS seems to shorten lifespan about 8-14 yrs, but use of even less potent disease modifying agents will typically allow a normal lifespan, ba... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 53-year-old member asked:
Dr. Bennett Machanic
Neurology 53 years experience
Uncommon: Some folks do get a mild flu for a few days after the injection. There has been controversy about potential neurological complications from flu shots... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 50-year-old member asked:
Dr. Bennett Machanic
Neurology 53 years experience
Yes: Surgery is critical to both diagnose, but also debulk and/or excise. Irradiation and steroids are often used, and chemotherapy may be successful. So... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 27-year-old member asked:
Dr. Bennett Machanic
Neurology 53 years experience
Alternatives: Although much is hyped in the alternative supplement market, most of the products are worthless. Theoretically, medical foods, such as cerefolin-nac ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 38-year-old female asked:
Dr. Bennett Machanic
Neurology 53 years experience
Not MS causation: Yes, MS patients do have susceptibility for infections, but relapses do not cause temperature elevation, and your high fever does need medical attenti... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 28-year-old member asked:
Dr. Bennett Machanic
Neurology 53 years experience
See comments: Do you really have cluster headaches which is usually a specific disorder afflicting middle aged men? The term is often misused for frequent migraine... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 21-year-old member asked:
Dr. Bennett Machanic
Neurology 53 years experience
The mystery: Ms is an autoimmune disorder, associated with genetic and environmental influences. But we know that 99.5% of patients have had exposure to ebstein-b... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 21-year-old member asked:
Dr. Bennett Machanic
Neurology 53 years experience
No: Als is relatively rare, with 90% sporadic and 10% genetic (25% of which have mutations involving copper/zinc superoxide dismutase). There is no speci... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 21-year-old member asked:
Dr. Bennett Machanic
Neurology 53 years experience
Mostly infection: When the disease affects motor nerve cells at base of brain, causing bulbar problems, the pt loses the ability to swallow, and breathe, with the need ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 21-year-old member asked:
Dr. Bennett Machanic
Neurology 53 years experience
End stage progress.: Never want to wind up with any progressive form of MS, (tough to treat) and the potent initial meds such as Tysabri (natalizumab) or Gilenya are the b... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 21-year-old member asked:
Dr. Bennett Machanic
Neurology 53 years experience
Nerve damage: The disease attacks the motor nerve cell in brain and spinal cord leading to weakness, muscle atrophy, flickering of muscle fibers, tongue atrophy wit... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 40-year-old member asked:
Dr. Bennett Machanic
Neurology 53 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 25-year-old member asked:
Dr. Bennett Machanic
Neurology 53 years experience
No: Merely, a recording of brain electrical activity, and no electricity goes to the patient, only a recording.
Created for people with ongoing healthcare needs but benefits everyone.
A 21-year-old member asked:
Dr. Bennett Machanic
Neurology 53 years experience
Tropical climates: The types of mosquitos that carry the malarial parasite are quite rare in the continental United States, and are typically found in hot and muggy clim... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 21-year-old member asked:
Dr. Bennett Machanic
Neurology 53 years experience
Very common: Widespread in wilderness areas, and statistically probably present these days in most mountain streams and lakes. Also, clearly almost ubiquitous in ... 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
11K
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
90,000 U.S. doctors in 147 specialties are here to answer your questions, provide medical advice, write prescriptions, and more.
Answer emailed
in 24 hours or less