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- 510 Cr 466, Ste 207 D, Lady Lake, FL 32159
About Dr. Hammesfahr
Based in Lady Lake, FL, William M. Hammesfahr, MD is listed in the NPI registry under neurology. William is also listed as specializing in neurology / psychiatry, pain medicine, and vascular neurology. According to Medicare claims data, William cared for 85 Medicare patients across 85 services. The services billed most often include administration of psychological or neuropsychological test by technician, each additional 30 minutes, administration of psychological or neuropsychological test by technician, first 30 minutes, and evaluation of neuropsychological test, first hour. NPI 1962446500 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
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
- (352) 414-5322
- Email not available
Practice Locations
510 CR 466 STE 207 D
Lady Lake, FL 32159
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
Brain & memory
- Stroke recovery issues
Specialized neurologic care
- Neurogenetic disorders
Spine, brain injury, and functional
- Functional neurological disorder
- Spinal cord disorders
- Bell's palsy
- Concussion
Most searched conditions
- Alzheimer's disease
- Epilepsy
- Migraines
- Multiple sclerosis
- Neuropathy
- Parkinson's disease
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
- Cluster Headaches
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
Procedures & services
Consultation and testing
- Comprehensive neurologic examination
- Inpatient video EEG monitoring
- Ambulatory EEG
- Evoked-potential testing
- Nerve-conduction studies
Device and advanced subspecialty
- Responsive neurostimulation programming
- Vagus nerve stimulation programming
Diagnostic Testing
- Cognitive and memory screening
- Genetic Testing for Neurological Disorders
- Neuromuscular Ultrasound
- Neuropsychological Testing
- Normal Pressure Hydrocephalus Tap Test
- Tilt Table Test
Geriatric care
- Dementia Behavior Support Coaching
Office procedures
- Botulinum toxin injections for chronic migraine
- Botulinum toxin injections for dystonia or spasticity
- Lumbar puncture
- Occipital nerve block
Pain & wellness
Treatment management
- Epilepsy medication management
- Migraine preventive treatment
- Multiple sclerosis disease-modifying treatment
Most searched procedures
- Botox for migraines
- EEG
- EMG
- Nerve block
- Sleep study
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
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
Trauma & Injury
- Concussion Evaluation and Baseline Testing
- Concussion Return-to-Play Clearance
Procedures Most Often Billed to Medicare
85 services · 85 patients · 7 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Administration of psychological or neuropsychological test by technician, each additional 30 minutes | Treatment | 96139 |
13 | Less often than most peers in Neurology |
| Administration of psychological or neuropsychological test by technician, first 30 minutes | Treatment | 96138 |
12 | Less often than most peers in Neurology |
| Evaluation of neuropsychological test, first hour | Treatment | 96132 |
12 | Less often than most peers in Neurology |
| Measurement of brain wave activity (eeg), digital analysis | Treatment | 95957 |
12 | Less often than most peers in Neurology |
| Measurement of nerve conduction using visual stimulation testing with report | Treatment | 95930 |
12 | Less often than most peers in Neurology |
| Measurement of brain wave activity (eeg), awake and drowsy | Treatment | 95816 |
12 | Less often than most peers in Neurology |
| Evaluation of brain response to sound for determination of hearing threshold with interpretation and report | Treatment | 92652 |
12 | Too few peers to compare |
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.
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.
Also performs Administration of psychological or neuropsychological test by technician, each additional 30 minutes 8
Providers in FL who bill this service to Medicare most often.
Common questions
What does Dr. Hammesfahr specialize in?
Dr. Hammesfahr is a neurologist in Lady Lake, FL. That is the designation recorded for this NPI in the federal registry, where it is listed as “Neurology”.
NPI registry
Where is Dr. Hammesfahr located?
Dr. Hammesfahr is listed at 510 Cr 466 Ste 207 D, Lady Lake, FL 32159. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Hammesfahr's phone number?
The number on file is (352) 414-5322. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. Hammesfahr's NPI number?
Dr. Hammesfahr's National Provider Identifier is 1962446500. 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
How long has Dr. Hammesfahr been practicing?
Dr. Hammesfahr has 20+ years experience. Registered with an NPI since 2006. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.
NPI registry
What does Dr. Hammesfahr do most often?
According to Medicare billing data, Dr. Hammesfahr provides treatments such as administration of psychological or neuropsychological test by technician, each additional 30 minutes and administration of psychological or neuropsychological test by technician, first 30 minutes. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Hammesfahr confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Hammesfahr. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.