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- 1520 San Pablo St Ste 3800, Los Angeles, CA 90033
About Dr. Mack
William J. Mack, M.D. practices neurosurgery in Los Angeles, CA. William is a 2001 graduate of Columbia University College of Physicians and Surgeons. William is also listed as specializing in neurological surgery. Medicare claims data shows William provided 160 services to 151 patients. The services billed most often include imaging of blood vessel, insertion of tube into internal neck artery for diagnosis or treatment with review by radiologist, 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 1811163793.
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
- (323) 442-5720
- Email not available
Practice Locations
1520 SAN PABLO ST STE 3800
Los Angeles, CA 90033
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
160 services · 151 patients · 10 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 |
22 | As often as other peers in Neurosurgery |
| Insertion of tube into external neck artery for diagnosis or treatment with review by radiologist | Procedure | 36227 |
17 | As often as other peers in Neurosurgery |
| Insertion of tube into brain artery for diagnosis or treatment with review by radiologist | Procedure | 36226 |
15 | Less often than most peers in Neurosurgery |
| Occlusion of central nervous system or spinal cord artery | Procedure | 61624 |
13 | Less often than most peers in Neurosurgery |
| Insertion of tube into intracranial artery for diagnosis or treatment with review by radiologist | Procedure | 36223 |
11 | Less often than most peers in Neurosurgery |
| Imaging of blood vessel | Imaging | 75898 |
22 | As often as other peers in Neurosurgery |
| Review by radiologist of image for insertion of material to block blood flow | Imaging | 75894 |
14 | Less often than most peers in Neurosurgery |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
20 | Less often than most peers in Neurosurgery |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
15 | Less often than most peers in Neurosurgery |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
11 | Less often than most peers in Neurosurgery |
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 neurosurgery specialists at this location 1
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 neurosurgery specialists in Los Angeles 8
Same specialty, same city.
More connections — 23 related providers in 3 groups
Trained at Columbia University College of Physicians and Surgeons 7
Other providers in the same specialty who trained at the same institution.
Class of 2001 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 does William J. Mack specialize in?
William J. Mack is a neurosurgery in Los Angeles, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is William J. Mack located?
William J. Mack is listed at 1520 San Pablo St Ste 3800, Los Angeles, CA 90033. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is William J. Mack's phone number?
The number on file is (323) 442-5720. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for William J. Mack?
William J. Mack's National Provider Identifier is 1811163793. 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 William J. Mack train?
William J. Mack attended Columbia University College of Physicians and Surgeons, graduating in 2001. This comes from the CMS National Downloadable File.
CMS public data
How much experience does William J. Mack have?
William J. Mack has 25 years experience. Calculated from a graduation year of 2001, reported in the CMS National Downloadable File.
CMS public data
What does William J. Mack do most often?
According to Medicare billing data, William J. Mack performs procedures including insertion of tube into internal neck artery for diagnosis or treatment with review by radiologist, insertion of tube into external neck artery for diagnosis or treatment with review by radiologist and insertion of tube into brain artery for diagnosis or treatment with review by radiologist; reads or performs imaging such as imaging of blood vessel and review by radiologist of image for insertion of material to block blood flow, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is William J. Mack's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by William J. Mack. If this is you, claiming it is free.
Guide.md
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