Are you John D. Clark, M.D.? This profile is yours to edit: update your address, phone, photo and services.
Edit this profileAt a glance
- 1340 S 18Th St Ste 104, Fernandina Beach, FL 32034
About Dr. Clark
John D. Clark, M.D. practices neurology in Fernandina Beach, FL. John is a 1990 graduate of University of Oklahoma College of Medicine. Medicare claims data shows John provided 15,870 services to 807 patients. The services billed most often include injection, onabotulinumtoxina, 1 unit, established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more. The provider's National Provider Identifier (NPI) is 1235166943.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (904) 277-3311
- Email not available
Practice Locations
1340 S 18TH ST STE 104
Fernandina Beach, FL 32034
Conditions Commonly Evaluated or Treated
Within Neurology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
Headache and facial pain
Memory and cognition
Movement disorders
- Essential tremor
- Huntington's disease
- Restless legs syndrome
Neuromuscular and peripheral nerve
- Amyotrophic lateral sclerosis
- Carpal tunnel
- Diabetic neuropathy
- Guillain-Barré syndrome
- Muscular dystrophy
- Myasthenia gravis
Seizures and epilepsy
- Functional seizures
Stroke and vascular
- Brain aneurysm
- Transient ischemic attack
Brain & Spine
- Severe back pain
Brain tumors
- Brain Tumor Symptoms
Head & Facial Pain
Memory & Cognitive
- Normal Pressure Hydrocephalus
Movement Disorders
- Balance Problems and Ataxia
- Stiff neck
- Stiff Person Syndrome
- Tourette Syndrome and Tics
Nerve Compression
Sleep & Movement
- Narcolepsy
Spine and nerve
- Cervical radiculopathy
Spine, brain injury, and functional
Procedures & services
Most searched procedures
- Botox for migraines
- EEG
- EMG
- Nerve block
- Sleep study
Consultation and testing
- Ambulatory EEG
- Evoked-potential testing
- Nerve-conduction studies
Consultations & Exams
- Neurological Second Opinion
- Spasticity Assessment and Treatment
- Stroke Risk Evaluation
Consultations and exams
- Neurological Exam and Consultation
Device management
- Deep Brain Stimulation Adjustment
- Responsive Neurostimulator Programming
Diagnostic Testing
- Cognitive and memory screening
- Genetic Testing for Neurological Disorders
- Neuromuscular Ultrasound
- Neuropsychological Testing
- Normal Pressure Hydrocephalus Tap Test
- Tilt Table Test
Infusion and medical therapies
- Neurology Infusion Therapy
Infusions & Therapies
- IVIG Infusion Therapy
- Migraine Preventive Injections and Infusions
- MS Disease-Modifying Infusion Therapy
- Plasmapheresis
Injections & Pain Relief
- Botox Injections for Excessive Drooling
- Botox Injections for Muscle Spasms and Dystonia
- Trigger Point Injections
Medication Management
- Seizure Medication Management
Neuromodulation
- Baclofen Pump Programming and Refills
- Vagus nerve stimulation management
Office procedures
- Lumbar puncture
- Occipital nerve block
Trauma & Injury
- Concussion Evaluation and Baseline Testing
- Concussion Return-to-Play Clearance
Procedures Most Often Billed to Medicare
15,870 services · 807 patients · 15 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Injection of chemical for paralysis of facial and neck nerve muscles on both sides of face | Procedure | 64615 |
43 | As often as other peers in Neurology |
| Needle measurement of electrical activity in arm or leg muscles, complete study | Treatment | 95886 |
76 | As often as other peers in Neurology |
| Nerve conduction, 5-6 studies | Treatment | 95909 |
23 | As often as other peers in Neurology |
| Measurement of brain wave activity (eeg), 61-119 minutes | Treatment | 95813 |
18 | More often than most peers in Neurology |
| Measurement of brain wave activity (eeg), 61-119 minutes | Treatment | 95813 |
13 | More often than most peers in Neurology |
| Measurement of brain wave activity (eeg), awake and asleep | Treatment | 95819 |
11 | Less often than most peers in Neurology |
| Injection, onabotulinumtoxina, 1 unit | Drug given | J0585 |
15,000 | More often than most peers in Neurology |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
210 | More often than most peers in Neurology |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
180 | More often than most peers in Neurology |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
96 | More often than most peers in Neurology |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other neurologists at this location 2
Same specialty, same street address — most likely the same department or group.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Trained at University of Oklahoma College of Medicine 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 1990 at University of Oklahoma College of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Injection of chemical for paralysis of facial and neck nerve muscles on both sides of face 8
Providers in FL who bill this service to Medicare most often.
Common questions
What does John D. Clark specialize in?
John D. Clark is a neurologist in Fernandina Beach, FL. That is the designation recorded for this NPI in the federal registry, where it is listed as “Neurology”.
NPI registry
Where is John D. Clark located?
John D. Clark is listed at 1340 S 18Th St Ste 104, Fernandina Beach, FL 32034. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is John D. Clark's phone number?
The number on file is (904) 277-3311. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for John D. Clark?
John D. Clark's National Provider Identifier is 1235166943. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did John D. Clark train?
John D. Clark attended University of Oklahoma College of Medicine, graduating in 1990. This comes from the CMS National Downloadable File.
CMS public data
How much experience does John D. Clark have?
John D. Clark has 36 years experience. Calculated from a graduation year of 1990, reported in the CMS National Downloadable File.
CMS public data
What does John D. Clark do most often?
According to Medicare billing data, John D. Clark performs procedures including injection of chemical for paralysis of facial and neck nerve muscles on both sides of face; provides treatments such as needle measurement of electrical activity in arm or leg muscles, complete study and nerve conduction, 5-6 studies, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is John D. Clark's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by John D. Clark. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.