Physician Profile
Gregory J. Castiglia, MD
Unclaimed ProfileAbout Dr. Castiglia
Gregory J. Castiglia, MD is a healthcare provider in Williamsville, NY specializing in neurological surgery. Gregory trained at Columbia University College of Physicians and Surgeons, graduating in 1992. According to Medicare claims data, Gregory cared for 206 Medicare patients across 1,703 services. The services billed most often include injection, methylprednisolone acetate, 1 mg, injection of substance into lower spine canal using imaging guidance, and established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
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
- (716) 218-1000
- Email not available
Practice Locations
40 GEORGE KARL BLVD
Williamsville, NY 14221
Conditions Commonly Evaluated or Treated
Within Neurological Surgery 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
- Brain aneurysm
- Brain tumor
- Herniated disc
- Pinched nerve
- Sciatica
- Spinal stenosis
Brain & spine conditions
- Spinal Fluid Leak
Brain conditions
- Brain Swelling
- Water On Baby's Brain
Brain disorders
- Acoustic Neuroma
- Brain Vascular Malformation
- Chiari Malformation
- Drug-Resistant Seizures
- Epidermoid cyst
- Hemorrhagic stroke
- Meningitis
- Normal Pressure Hydrocephalus
- Papilledema
- Pituitary Tumor
Brain injury
- Blood Clot On The Brain
- Traumatic brain injury
Brain tumors
- Brain Tumor Symptoms
- Glioblastoma
Movement disorders
- Essential tremor
- Muscle Spasms & Twitches
- Parkinson's disease
- Severe Muscle Spasticity
Nerve disorders
- Carpal tunnel
- Cubital tunnel syndrome
- Cut Or Injured Nerve
- Face Twitching
- Occipital neuralgia
- Outer thigh burning and numbness
- Thoracic outlet syndrome
- Trigeminal neuralgia
Pain
- Sacroiliac joint pain
Pediatric conditions
- Baby Flat Head
- Open Spine Birth Defect
Spine & back
- Arthritis of the spine
- Chronic back pain
- Chronic Neck Pain
- Degenerative disc disease
- Failed back surgery syndrome
- Severe back pain
- Spinal Cord Tumor
- Spondylolisthesis
- Tethered Spinal Cord
Spine conditions
- Bone Spurs In The Spine
- Fluid Cyst In Spinal Cord
- Spinal compression fracture
- Spine Infection
- Stress Fracture Of The Spine
Spine deformity
- Hunchback Deformity
- Scoliosis
Trauma & injury
- Concussion in Children
- Skull Fracture
- Spinal Cord Injury
Procedures & services
Most searched procedures
- Craniotomy
- Discectomy
- Laminectomy
- Lumbar discectomy
- Spinal fusion
- Spine surgery
Brain & spine surgery
- CSF Leak Repair
Brain procedures
- Awake Brain Mapping Surgery
- Brain Shunt Placement
- Chiari Decompression Surgery
- Deep Brain Stimulation
- Draining A Brain Bleed
- Facial Nerve Decompression Surgery
- Laser Brain Surgery
- Minimally Invasive Endoscopic Brain Surgery
- Needle Brain Biopsy
Brain surgery
- GPS-Guided Brain Navigation Surgery
- Skull Bone Removal For Pressure Relief
Cranial reconstruction
- Skull Reconstruction
Diagnostic & therapeutic
- Blood patch for spinal headache
- Lumbar puncture
Endovascular procedures
- Brain Aneurysm Coiling
Functional neurosurgery
- Surgery For Seizures
- Vagus Nerve Stimulator Implant
Monitoring & trauma
- Brain Pressure Monitor Placement
Nerve procedures
- Carpal tunnel surgery
- Cubital tunnel decompression
- Nerve Repair Surgery
Nerve surgery
- Tarsal Tunnel Release
Pain procedures
- Epidural steroid injection
- Facet Joint Injections
- Pain pump implant
- Radiofrequency ablation
- Spinal cord stimulator implant
Pediatric neurosurgery
- Baby Skull Reshaping Surgery
- Nerve Surgery For Cerebral Palsy
Radiation & radiosurgery
- CyberKnife
Radiation surgery
- Stereotactic radiosurgery (SRS)
Skull base surgery
- Acoustic Neuroma Surgery
- Pituitary Tumor Removal
- Skull Base Surgery
Spasticity treatment
- Baclofen Pump Insertion
Spine procedures
- Artificial Disc Replacement
- Kyphoplasty
- Nerve Opening Widening
- Scoliosis correction surgery
- SI Joint Fusion
- Spinal Cyst Removal
- Tethered Cord Release
- Vertebra Removal Surgery
Spine surgery
- Minimally Invasive Spine Surgery
- Neck Canal Enlargement Surgery
- Spinal Cord Tumor Removal
- Vertebroplasty
Vascular neurosurgery
- Brain Aneurysm Clipping
- Carotid endarterectomy
Procedures Most Often Billed to Medicare
1,703 services · 206 patients · 7 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Injection of substance into lower spine canal using imaging guidance | Procedure | 62323 |
62 | More often than most peers in Neurological Surgery |
| Insertion of cage or mesh device to spine bone and disc space during spine fusion | Procedure | 22853 |
21 | Less often than most peers in Neurological Surgery |
| Fusion of spine in lower back with partial removal of spine bone and disc | Procedure | 22633 |
11 | Less often than most peers in Neurological Surgery |
| Injection, methylprednisolone acetate, 1 mg | Drug given | J1010 |
1,486 | As often as other peers in Neurological Surgery |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
53 | As often as other peers in Neurological Surgery |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
39 | More often than most peers in Neurological Surgery |
| Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | Office visit | 99222 |
31 | More often than most peers in Neurological Surgery |
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 neurosurgeons at this location 8
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.
Other neurosurgeons in Williamsville 4
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Columbia University College of Physicians and Surgeons 8
Other providers in the same specialty who trained at the same institution.
Class of 1992 at Columbia University College of Physicians and Surgeons 8
Providers who graduated from the same medical school in the same year.
Also performs Injection of substance into lower spine canal using imaging guidance 8
Providers in NY who bill this service to Medicare most often.
Common questions
What is Dr. Castiglia's specialty?
Dr. Castiglia is a neurosurgeon in Williamsville, NY. That is the designation recorded for this NPI in the federal registry, where it is listed as “Neurological Surgery”.
NPI registry
Where can I find Dr. Castiglia?
Dr. Castiglia is listed at 40 George Karl Blvd, Williamsville, NY 14221. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Castiglia?
The number on file is (716) 218-1000. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Castiglia's NPI number?
Dr. Castiglia's National Provider Identifier is 1003891896. 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
What is Dr. Castiglia's medical education?
Dr. Castiglia attended Columbia University College of Physicians and Surgeons, graduating in 1992. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Castiglia been practicing?
Dr. Castiglia has 34 years experience. Calculated from a graduation year of 1992, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Castiglia known for?
According to Medicare billing data, Dr. Castiglia performs procedures including injection of substance into lower spine canal using imaging guidance, insertion of cage or mesh device to spine bone and disc space during spine fusion and fusion of spine in lower back with partial removal of spine bone and disc, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Castiglia confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Castiglia. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.