Physician Profile
Geoffrey P. Colby, M.D., PhD
Unclaimed ProfileAbout Dr. Colby
Geoffrey P. Colby, M.D., PhD practices neurological surgery in Los Angeles, CA. Geoffrey is a 2006 graduate of Columbia University College of Physicians and Surgeons. Medicare claims data shows Geoffrey provided 400 services to 321 patients. The services billed most often include established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more, and ultrasonic guidance for blood vessel access.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
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
- (310) 825-5111
- Email not available
Practice Locations
300 MEDICAL PLAZA
Los Angeles, CA 90095
27235 Tourney Rd Ste 2500
Valencia, CA 91355
757 Westwood Plz
Los Angeles, CA 90095
6567 E Carondelet Dr Ste 305
Tucson, AZ 85710
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 & spine conditions
Brain conditions
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
Brain tumors
Movement disorders
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
Pediatric conditions
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
Trauma & injury
Procedures & services
Most searched procedures
Brain & spine surgery
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
Cranial reconstruction
Diagnostic & therapeutic
Endovascular procedures
Functional neurosurgery
Monitoring & trauma
Nerve procedures
Nerve surgery
Pain procedures
- Epidural steroid injection
- Facet Joint Injections
- Pain pump implant
- Radiofrequency ablation
- Spinal cord stimulator implant
Pediatric neurosurgery
Radiation & radiosurgery
Radiation surgery
Skull base surgery
Spasticity treatment
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
Procedures Most Often Billed to Medicare
400 services · 321 patients · 13 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Insertion of tube into internal neck artery for diagnosis or treatment with review by radiologist | Procedure | 36224 |
26 | As often as other peers in Neurological Surgery |
| Insertion of tube into brain artery for diagnosis or treatment with review by radiologist | Procedure | 36226 |
14 | Less often than most peers in Neurological Surgery |
| Occlusion of central nervous system or spinal cord artery | Procedure | 61624 |
13 | Less often than most peers in Neurological Surgery |
| Insertion of tube into external neck artery for diagnosis or treatment with review by radiologist | Procedure | 36227 |
13 | Less often than most peers in Neurological Surgery |
| Ultrasonic guidance for blood vessel access | Imaging | 76937 |
34 | As often as other peers in Neurological Surgery |
| Imaging of blood vessel | Imaging | 75898 |
28 | As often as other peers in Neurological Surgery |
| 3d radiographic procedure with computerized image postprocessing | Imaging | 76377 |
15 | Less often than most peers in Neurological Surgery |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
115 | More often than most peers in Neurological Surgery |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
45 | More often than most peers in Neurological Surgery |
| New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more | Office visit | 99205 |
32 | As often as other 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 2
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 8
Clinically related specialties at the same address — the people this provider most likely works alongside.
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.
More connections — 31 related providers in 4 groups
Other neurosurgeons in Los Angeles 8
Same specialty, same city.
Trained at Columbia University College of Physicians and Surgeons 7
Other providers in the same specialty who trained at the same institution.
Class of 2006 at Columbia University College of Physicians and Surgeons 8
Providers who graduated from the same medical school in the same year.
Also performs Insertion of tube into internal neck artery for diagnosis or treatment with review by radiologist 8
Providers in CA who bill this service to Medicare most often.
Common questions
What is Geoffrey P. Colby, M.D.'s specialty?
Geoffrey P. Colby, M.D. is a neurosurgeon in Los Angeles, CA. 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 Geoffrey P. Colby, M.D.?
Geoffrey P. Colby, M.D. is listed at 300 Medical Plaza, Los Angeles, CA 90095. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Geoffrey P. Colby, M.D.?
The number on file is (310) 825-5111. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Geoffrey P. Colby, M.D.?
Geoffrey P. Colby, M.D.'s National Provider Identifier is 1144373739. 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 Geoffrey P. Colby, M.D.'s education?
Geoffrey P. Colby, M.D. attended Columbia University College of Physicians and Surgeons, graduating in 2006. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Geoffrey P. Colby, M.D. have?
Geoffrey P. Colby, M.D. has 20 years experience. Calculated from a graduation year of 2006, reported in the CMS National Downloadable File.
CMS public data
What is Geoffrey P. Colby, M.D. known for?
According to Medicare billing data, Geoffrey P. Colby, M.D. performs procedures including insertion of tube into internal neck artery for diagnosis or treatment with review by radiologist, insertion of tube into brain artery for diagnosis or treatment with review by radiologist and occlusion of central nervous system or spinal cord artery; reads or performs imaging such as ultrasonic guidance for blood vessel access and imaging of blood vessel, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Geoffrey P. Colby, M.D.'s profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Geoffrey P. Colby, M.D.. 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.