Physician Profile
Louis Chang, MD
Unclaimed ProfileAbout Dr. Chang
Louis Chang, MD is a healthcare provider in Bethesda, MD specializing in neurological surgery. Louis trained at State University of New York Downstate Medical Center, graduating in 2004. According to Medicare claims data, Louis cared for 574 Medicare patients across 642 services. The services billed most often include new patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more, subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes, and established patient office or other outpatient visit with high level of medical decision making, if using time, 40 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
- (301) 897-8850
- Email not available
Practice Locations
10215 FERNWOOD RD
Bethesda, MD 20817
506 6th St
Brooklyn, NY 11215
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
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
642 services · 574 patients · 14 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Insertion of cage or mesh device to spine bone and disc space during spine fusion | Procedure | 22853 |
17 | Less often than most peers in Neurological Surgery |
| Computer-assisted spinal procedure | Procedure | 61783 |
16 | As often as other peers in Neurological Surgery |
| Partial removal of spine bone with release of lower spinal cord and/or nerves, 1 segment | Procedure | 63047 |
14 | Less often than most peers in Neurological Surgery |
| Placement of stabilizing device to back, 3-6 spine bone segments | Procedure | 22842 |
13 | Less often than most peers in Neurological Surgery |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
116 | More than most peers in Neurological Surgery |
| Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | Office visit | 99231 |
95 | 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 |
79 | More often than most peers in Neurological Surgery |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
77 | More 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 |
74 | More often than most peers in Neurological Surgery |
| Emergency department visit for problem that may not require health care professional | Office visit | 99281 |
46 | 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.
Related specialists at this location 2
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.
Other neurosurgeons in Bethesda 8
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at State University of New York Downstate Medical Center 8
Other providers in the same specialty who trained at the same institution.
Class of 2004 at State University of New York Downstate Medical Center 8
Providers who graduated from the same medical school in the same year.
Also performs Insertion of cage or mesh device to spine bone and disc space during spine fusion 8
Providers in MD who bill this service to Medicare most often.
Common questions
What does Dr. Chang specialize in?
Dr. Chang is a neurosurgeon in Bethesda, MD. That is the designation recorded for this NPI in the federal registry, where it is listed as “Neurological Surgery”.
NPI registry
Where is Dr. Chang located?
Dr. Chang is listed at 10215 Fernwood Rd, Bethesda, MD 20817. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Chang's phone number?
The number on file is (301) 897-8850. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Chang's NPI number?
Dr. Chang's National Provider Identifier is 1235265364. 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 Dr. Chang go to medical school?
Dr. Chang attended State University of New York Downstate Medical Center, graduating in 2004. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Chang been practicing?
Dr. Chang has 22 years experience. Calculated from a graduation year of 2004, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Chang do most often?
According to Medicare billing data, Dr. Chang performs procedures including insertion of cage or mesh device to spine bone and disc space during spine fusion, computer-assisted spinal procedure and partial removal of spine bone with release of lower spinal cord and/or nerves, 1 segment, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Chang confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Chang. 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.