Dr. John Cassidy, MD

Neurosurgery •  Male • Age 61
  
Dr. Cassidy
Accepting new patients

Neurosurgical Associates

842 Sunset Lake Blvd Ste 302 Venice, FL 34292

Make an Appointment

Show Phone Number

Dr. John Cassidy, MD is a Neurosurgery Specialist in Venice, FL and has over 36 years of experience in the medical field. Dr. Cassidy has more experience with Neurocritical Care and Spine than other specialists in his area. He graduated from Virginia Commonwealth University School Of Medicine medical school in 1984. He is affiliated with medical facilities such as Doctors Hospital Of Sarasota and Sarasota Memorial Hospital. He is accepting new patients. Be sure to call ahead with Dr. Cassidy to book an appointment.


Compare with other Neurosurgery Specialists

Compare Dr. Cassidy with our nearby Neurosurgery Specialists at Doctors Hospital of Sarasota.

Make an appointment at Doctors Hospital of Sarasota today at (941) 315-6484.

provider hospital

These providers are on the medical staff of Doctors Hospital of Sarasota.

Dr. Cassidy's Reviews

Likelihood to recommend Dr. Cassidy

3.7

Based on 26 ratings

5 Stars
61.53846153846154%
(16)
4 Stars
3.8461538461538463%
(1)
3 Stars
3.8461538461538463%
(1)
2 Stars
0%
(0)
1 Star
30.76923076923077%
(8)
healthgrades logo

Leave a review

How likely are you to recommend
Dr. Cassidy?
(Select your rating)
RecentHighestLowestMost Helpful
Reply Flag
I’ve had 2 surgeries done by Dr. Cassidy. He is definitely the best in my opinion. He performed back surgery in 2018 which left me pain free and did a neck fusion in 2019 which was successful! He is very good at what he does. His office personnel is top notch!
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
Was this helpful?
thumbs up icon option
thumbs down icon option1
Linda Whalen – Aug 18, 2020
×Post a ResponseAre you Dr. John Cassidy, MD?
Reply Flag
I took my friend to see Dr. Cassidy this morning for a consult. Her MRI showed many many issues with her back, including bulging & herniated discs & stenosis, to name a few. Dr. Cassidy has zero 'bedside manners" or personality, it was like talking to a fish out of water! He was condescending when referring to the Pain Specialist & the Primary Drs. as their 'inability' to wade through a MRI report! He could have cared less that she was and has been in debilitating pain for almost 3 weeks now, with no relief. He basically sent her off and said let me know if you want surgery or not!?!?!? Regardless of how wonderful he is as a surgeon, it does NOT excuse this rude & dismissive behavior! Needless to say, she will be pushing up her appointment with another neurosurgeon!
What went well
No results
What could be improved
No results
Was this helpful?
thumbs up icon option2
thumbs down icon option1
May 05, 2020
×Post a ResponseAre you Dr. John Cassidy, MD?
Reply Flag
If placed with Dr. Cassidy in a work comp capacity be prepared to be extremely disappointed. He will say what work comp wants him to say and release you back to work prematurely. I have multi-level cervical and lumbar bulges/herniations s/p MVA, was hospitalized x2; unable to walk with LE weakness; tingling and numbness and UE weakness; severe pain both upper and lower. Upon DC from hospital I could not walk without a walker. When I saw him in my follow up s/p hospital I had advanced to a cane but remained with severe upper extremity and lower extremity symptoms. He stated I was fine, only had arthritis, answered "I don't know" to my questions and released me back to work with NO work restrictions. This was the 2nd release. The 1st release landed me in the hospital for 4 days. He is not compassionate, empathetic and has no interest in seeing work comp patients unless they are surgical. He works for work comp, not the injured party!!!
What went well
No results
What could be improved
No results
Was this helpful?
thumbs up icon option3
thumbs down icon option
***** – Mar 11, 2020
×Post a ResponseAre you Dr. John Cassidy, MD?
Reply Flag
I had spinal stenosis, Dr Cassidy fused my L4 and L5. He along with the staff at Dr.’s Hospital in Sarasota did an awesome job on my lower spine. It’s been almost 3 months since my surgery and I’m doing great. He changed my life!! Highly recommended.
What went well
No results
What could be improved
No results
Was this helpful?
thumbs up icon option3
thumbs down icon option
E. Henry – Nov 05, 2019
Dr. Cassidy's Reply – Flag
Thank you!
×Post a ResponseAre you Dr. John Cassidy, MD?
Reply Flag
Not good at assisting with follow up appointments after surgery besides MRI.
What went well
No results
What could be improved
No results
Was this helpful?
thumbs up icon option
thumbs down icon option1
Nov 01, 2019
I am sorry you didn't feel like you had good...Read More
×Post a ResponseAre you Dr. John Cassidy, MD?
Reply Flag
After having surgery and going to a pain mgmt specialist for # 1/2 years this past February 2018, I went to Dr John Cassidy. He saw me within a few days, ordered an MRI (which my other Dr's never thought of) ,he reviewed the MRI within a day. Told me to come in and he thoroughly went over the surgery I needed. Within a few days his office got the insurance pre-authorization and I had the surgery at Doctors Hospital. I couldn't believe how smoothly eveyrthing went! My back feels great now.
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
  • Long wait times
Was this helpful?
thumbs up icon option2
thumbs down icon option2
Jim Szwarz in Bradenton, FL – Jun 08, 2018
Dr. Cassidy's Reply – Flag
Thank you!
×Post a ResponseAre you Dr. John Cassidy, MD?
Reply Flag
Both Dr. Cassidy and Dr. Guerin are the best Neurosurgeons in the area! I wouldn't trust anyone else to be in my spine or brain. Thanks to both of them for fixing me up to where I could walk again!
What went well
No results
What could be improved
No results
Was this helpful?
thumbs up icon option3
thumbs down icon option
tb in NP, fl – Oct 05, 2017
×Post a ResponseAre you Dr. John Cassidy, MD?
Reply Flag
Dr Cassidy read my X rays and found the cause of my tremendous pain in my left leg was a pinched nerve. IL was living on 5-6 pain pills daily. He is the one who spotted that the cause was a cyst that was growing and eating the vertebrae and pinching the nerve. After he removed the cyst I was pain free and have been for two months now. His patient relationship was very personal and caring.
What went well
No results
What could be improved
No results
Was this helpful?
thumbs up icon option6
thumbs down icon option2
Peter H in Bradenton, FL – Mar 31, 2017
×Post a ResponseAre you Dr. John Cassidy, MD?
Reply Flag
I have seen Dr Cassidy due to ongoing cervical and lumbar disc pain. He ordered a 3 tesla MRI. I was amazed! After several years of poorer MRIs, he knew right away what the problem is and how to fix it. Not only that, my doctors highly recommend him. I'm only awaiting my own home arrangements for surgery. I can only say thank you to this man.
What went well
No results
What could be improved
No results
Was this helpful?
thumbs up icon option7
thumbs down icon option
Arcadia, FL – Mar 09, 2017
Dr. Cassidy's Reply – Flag
Thank you
×Post a ResponseAre you Dr. John Cassidy, MD?
Reply Flag
I saw Dr. Cassidy because I was having sciatica in my left leg with severe back pain in the same area where I have a repaired herniated disc. He sent me for an MRI and read the films himself with me and my husband in the office with him. He found the problem (spinal stenosis) and we discussed my options. We were in agreement that an outpatient surgery would be the most likely best option for me. I had the surgery and within the predicted month, was feeling fine! Pain gone. Happy camper.
What went well
No results
What could be improved
No results
Was this helpful?
thumbs up icon option11
thumbs down icon option3
Theresa L. in Venice, FL – Sep 19, 2016
Dr. Cassidy's Reply – Flag
Thank you!
×Post a ResponseAre you Dr. John Cassidy, MD?
Reply Flag
I have had numerous dealings with Dr.Cassidy for mainly cervical and lumbar issues. He is always willing to answer any questions you want to know. He is on the quite side, but will open up you just have to ask. Very respectful and professional. I am spoiled and would prefer to have him to perform any further issues that may come up down the road for me within his field of specialty. Caring and dedicated Doctor.
What went well
No results
What could be improved
No results
Was this helpful?
thumbs up icon option7
thumbs down icon option1
Carol M in North Port, FL – Sep 03, 2016
Dr. Cassidy's Reply – Flag
Thank you!
×Post a ResponseAre you Dr. John Cassidy, MD?
Reply Flag
In 2013 Dr Cassidy fused L 4 and 5. My pain was much worse after surgery and dr Cassidy was so had to talk to I finally gave up. My pain got so bad I could not walk across the room. Had surgery at Vanderbilt Nashville Tenn October 2015. It was an 8 hour surgery as I had a lot more problems then Cassie diagnosed. I am now pain free. Cassidy did not take the time to give me the proper care I needed.
What went well
No results
What could be improved
No results
Was this helpful?
thumbs up icon option7
thumbs down icon option1
Jolene in Englewood florida – Jul 03, 2016
Jolene, I am sorry you did not have a good...Read More
×Post a ResponseAre you Dr. John Cassidy, MD?
Reply Flag
I had a severe back pain. It had caused such pain I did not think I would ever recuperate. I learned of Dr. John Cassidy through a friend and thought I would make an appointment. I had the spinal surgery and I was 100% free from pain. My neighbor down the street also has needed surgery on the spine. I shared my experience with this neighbor who was in back pain and he had Dr. Cassidy perform back surgery on him too. No More Back Pain...no more walker...no more cane. Walks the dog again. D.Swat
What went well
No results
What could be improved
No results
Was this helpful?
thumbs up icon option13
thumbs down icon option3
Dennis Swat in Venice, FL – May 25, 2016
Dr. Cassidy's Reply – Flag
Thank you
×Post a ResponseAre you Dr. John Cassidy, MD?

Leave a review

How was your experience with Dr. Cassidy?

About Me

Care Philosophy

Our physicians and staff are committed to your care. Dr. Cassidy not only provides general neurosurgery but specialize in complex spinal disease and brain...Read more

Biography

Dr. Cassidy received his Bachelor's Degree from Yale University in 1980 and graduated from the Medical College of Virginia in 1984, where he was elected...Read more

Specialties

  • Neurosurgery
  • Cerebrovascular Neurosurgery
  • Neurological Spine Reconstructive Surgery
  • Neurological Spine Surgery
  • Neurological Trauma Surgery
  • Neurovascular Surgery
  • Peripheral Nerve Surgery
Less...

Board Certifications

Education

1990
Johns Hopkins Hospital
Residency Hospital
1989
Johns Hopkins Hospital
Fellowship Hospital
1985
The Johns Hopkins Hospital
Internship Hospital
1984
Virginia Commonwealth University School Of Medicine
Medical School
1980
Yale University
Undergraduate School

Awards

Frequently Asked Questions

Is Dr. John Cassidy, MD accepting new patients?

Does Dr. John Cassidy, MD accept my insurance?

What are Dr. John Cassidy, MD's top areas of care?

Insurance Check

Search for your insurance provider

Dr. Cassidy accepts

Accepted insurance can change. Please double-check when making an appointment.

(941) 484-3404

Dr. Cassidy accepts the following insurance:

Aetna
Aetna HMO
Choice Plus POS II
Choice PPO
Medicare Advantage HMO
Medicare Advantage PPO
Affordable Health & Benefits
Affordable Health & Benefits PPO
Anthem
National (BlueCard) PPO
Beech Street (Multiplan)
Blue Cross Blue Shield
Blue Card
Blue Card PPO
Blue Cross Blue Shield EPO
Blue Cross Blue Shield HMO
Blue Cross Blue Shield POS
Blue Traditional
Blue Traditional HMO
Blue Traditional POS
Blue Traditional PPO
Federal Employee Program
Blue Cross Blue Shield of Florida
Blue Care HMO
Blue Select
BlueDental Choice
CareFirst Blue Cross Blue Shield
HealthyBlue 2.0
HealthyBlue Advantage
Cigna
Cigna HMO
Cigna PPO
Great West Healthcare-Cigna PPO
LocalPlus
Open Access Plus
First Health (Coventry Health Care)
First Health (Coventry Health Care) PPO
Freedom Health
Freedom Network
HealthSmart - Interplan Health Group
Interplan Health Group
Humana
Choice Care PPO
Select HMO
Tampa Bay CoreNet
MultiPlan
Integrated Health Plan (IHP) PPO
Optimum HealthCare
Three Rivers Provider Network

Background Check

No malpractice claims found for Florida
No disciplinary actions found for the years we collect data
No board actions found for the years we collect data
Learn more about background checks

Frequently Treated by Dr. Cassidy

Based on treatment records, we have identified the following as areas of care that Dr. Cassidy treats more often than their peers. If you are unsure whether Dr. Cassidy treats other conditions, please contact the office at (941) 484-3404.

Neurocritical Care

Neurocritical care specialists diagnose and treat severe and life-threatening neurological conditions such as stroke, spinal cord injury, brain tumor, and traumatic brain injuryCompare with other Neurocritical Care specialists.

Typically treats 71% more than similar doctors

Based on claims data for 3 conditions and procedures

TreatmentsTreatment Frequency
Cranial Trauma
normal
normal

Treatment Frequency

Dr. Cassidy treats Cranial Trauma more than 77% of their peers

Dr. Cassidy treats this condition more than 77% of their peers

Subarachnoid Hemorrhage
normal
normal

Treatment Frequency

Dr. Cassidy treats Subarachnoid Hemorrhage more than 71% of their peers

Dr. Cassidy treats this condition more than 71% of their peers

Traumatic Brain Injury
normal
normal

Treatment Frequency

Dr. Cassidy treats Traumatic Brain Injury more than 65% of their peers

Dr. Cassidy treats this condition more than 65% of their peers

Spine

Spine specialists diagnose and treat conditions affecting the bones of the spine, including degenerative spine disease, herniated discs, stenosis, and fractured vertebrae, with treatments including medication, physical therapy, and surgery.Compare with other Spine specialists.

Typically treats 66% more than similar doctors

Based on claims data for 14 conditions and procedures

TreatmentsTreatment Frequency
Osteoarthritis of Spine
very high
very high

Treatment Frequency

Dr. Cassidy treats Osteoarthritis of Spine more than 100% of their peers

Dr. Cassidy treats this condition more than 100% of their peers

Lamina Procedures (incl. Laminectomy, Laminoplasty, Laminotomy)
high
high

Treatment Frequency

Dr. Cassidy performs Lamina Procedures (incl. Laminectomy, Laminoplasty, Laminotomy) more than 89% of their peers

Dr. Cassidy performs this procedure more than 89% of their peers

Herniated Disc Surgery
high
high

Treatment Frequency

Dr. Cassidy performs Herniated Disc Surgery more than 88% of their peers

Dr. Cassidy performs this procedure more than 88% of their peers

Check Dr. Cassidy's experience treating your condition or procedure

Dr. Cassidy's conditions and procedures:

  • Abdominal Pain
  • Abscess or Cyst Drainage or Aspiration
  • Abscess or Fluid Incision and Drainage
  • Acoustic Neuroma
  • Aneurysm
  • Barrett's Esophagus
  • Benign Neoplasm of the Digestive System
  • Bone Cancer
  • Bone Disorders
  • Brain and Nervous System Cancer (incl. Gliomas, Astrocytoma, Schwannoma, Medulloblastoma, Chordoma)
  • Brain Aneurysm
  • Brain Cancer
  • Brain Disorders
  • Brain Surgery
  • Breast Cancer
  • Broken Neck
  • Burn Injuries
  • Cancer
  • Cauda Equina Syndrome
  • Cerebral Artery Thrombosis
  • Cerebral Hemorrhage
  • Cerebrospinal Fluid (CSF) Shunt - Insertion, Repair or Removal
  • Cerebrospinal Fluid Leak (CSF Leak)
  • Cerebrovascular Disease
  • Cervical Spine Myelopathy
  • Cholecystitis and Gallstones
  • Collapsed Lung (Pneumothorax)
  • Colorectal Cancer
  • Constipation
  • Cranial Trauma
  • Degenerative Disc Disease
  • Diaphragmatic and-or Hiatal Hernia
  • Disc Replacement
  • Dressing and-or Debridement of Wound, Infection, or Burn (incl. Negative Pressure Wound Therapy)
  • Dural Repair or Other Spinal Cord Repair
  • Ear Disorders
  • Epidural Hematoma
  • Epidural Lysis of Adhesions (LOA)
  • Excision, Shaving, or Destruction of Skin and Subcutaneous Tissue (incl. Mohs Micrographic Surgery), Tissue Transfer
  • Extradural Hemorrhage
  • Fracture
  • Gastric Ulcer
  • Hemorrhoids
  • Herniated Disc
  • Herniated Disc Surgery
  • Hydrocephalus
  • Hyperparathyroidism
  • Ileus
  • Incision and Removal of Foreign Object
  • Inflammatory Bowel Disease
  • Inguinal Hernia
  • Intervertebral Disc Disease
  • Intestinal Ischemia
  • Intestinal Obstruction
  • Lamina Procedures (incl. Laminectomy, Laminoplasty, Laminotomy)
  • Low Back Pain
  • Lumbar Spine Fracture
  • Lung Abscess
  • Lung Cancer
  • Meningiomas
  • Myelopathy
  • Nerve Block, Somatic
  • Nerve Destruction by Neurolytic Agent
  • Nerve Root Injury and Plexus Disorders (incl. Pinched Nerve)
  • Nerve Sheath Tumors
  • Neuroendocrine Tumors
  • Neuroplasty
  • Neurostimulation
  • Normal Pressure Hydrocephalus
  • Osteoarthritis of Spine
  • Osteosarcoma
  • Partial Lung Collapse
  • Pathological Spine Fracture
  • Peripheral Artery Catheterization
  • Peripheral Vascular Disease (PAD, PVD)
  • Phlebitis and Thrombophlebitis
  • Pituitary Gland Cancer
  • Pituitary Gland Tumor Excision
  • Pleural Effusion
  • Port Placements or Replacements
  • Post-Laminectomy Syndrome
  • Radiculopathy (Not Due to Disc Displacement)
  • Second-Degree Burns
  • Secondary Malignancies
  • Soft Tissue Tumor Removal
  • Spina Bifida
  • Spinal Cord Injury
  • Spinal Cord Stimulation
  • Spinal Cord Tumor
  • Spinal Fusion
  • Spinal Reconstructive Surgery for Deformities
  • Spinal Stenosis
  • Spine Disorders
  • Spine Fracture Treatment
  • Spine Fractures, Traumatic
  • Spondylolisthesis
  • Stereotactic Surgery
  • Stroke
  • Subarachnoid Hemorrhage
  • Subdural Hemorrhage
  • Sympathectomy
  • Thoracentesis
  • Thoracic Spine Fracture
  • Thoracic Spine Myelopathy
  • Thrombosis
  • Thyroid Lobectomy
  • Thyroidectomy or Thyroid Lobectomy
  • Tracheal Surgery
  • Traumatic Brain Injury
  • Trigger Point Injection
  • Ulcerative Colitis
  • Umbilical Hernia
  • Vascular Disease
  • Vascular Insufficiency of Intestines
  • Vascular Transcatheter Embolization
  • Vertebral Column Tumors
  • Wound Repair

Locations

Neurosurgical Associates

Neurosurgical Associates842 Sunset Lake Blvd Ste 302 Venice, FL 34292
1
Neurosurgical Associates Cassidy & Guerin MD PA5741 Bee Ridge Rd Ste 320 Sarasota, FL 34233
2
;