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- 4736 91St Ave Se, Mercer Island, WA 98040
About Dr. Fan
Based in Mercer Island, WA, Peien Fan, M.D. is listed in the NPI registry under neurology. Peien graduated from Clvlnd Clinic Lerner College of Med of Case Wstn RSV University in 2012. Medicare claims data shows Peien provided 444 services to 267 patients. The services billed most often include continuous intraoperative neurophysiology monitoring, from outside the operating room (remote or nearby), per patient, (attention directed exclusively to one patient) each 15 minutes (list in addition to primary procedure), placement of skin electrodes and measurement of stimulated sites on arms and legs, and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more. NPI 1346504511 identifies this record in the national registry.
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
- (773) 703-6770
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
4736 91ST AVE SE
Mercer Island, WA 98040
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
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
444 services · 267 patients · 9 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Placement of skin electrodes and measurement of stimulated sites on arms and legs | Treatment | 95938 |
47 | As often as other peers in Neurology |
| Needle measurement of electrical activity in arm or leg muscles, 2 extremities | Treatment | 95861 |
34 | Less often than most peers in Neurology |
| Placement of skin electrodes and measurement of central motor stimulation in arms and legs | Treatment | 95939 |
18 | Less often than most peers in Neurology |
| Measurement of brain wave activity (eeg), 41-60 minutes | Treatment | 95812 |
12 | Less often than most peers in Neurology |
| Measurement of brain wave activity (eeg), awake and asleep | Treatment | 95819 |
11 | Less often than most peers in Neurology |
| Continuous intraoperative neurophysiology monitoring, from outside the operating room (remote or nearby), per patient, (attention directed exclusively to one patient) each 15 minutes (list in addition to primary procedure) | Billing code | G0453 |
215 | Less often than most peers in Neurology |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
42 | Less often than most peers in Neurology |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
39 | As often as other peers in Neurology |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
26 | Less often than most peers in Neurology |
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.
Trained at Clvlnd Clinic Lerner College of Med of Case Wstn RSV University 8
Other providers in the same specialty who trained at the same institution.
Class of 2012 at Clvlnd Clinic Lerner College of Med of Case Wstn RSV University 8
Providers who graduated from the same medical school in the same year.
Also performs Placement of skin electrodes and measurement of stimulated sites on arms and legs 5
Providers in WA who bill this service to Medicare most often.
Common questions
What is Peien Fan's specialty?
Peien Fan is a neurologist in Mercer Island, WA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Neurology”.
NPI registry
Where can I find Peien Fan?
Peien Fan is listed at 4736 91St Ave Se, Mercer Island, WA 98040. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Peien Fan?
The number on file is (773) 703-6770. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Peien Fan?
Peien Fan's National Provider Identifier is 1346504511. 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 Peien Fan's education?
Peien Fan attended Clvlnd Clinic Lerner College of Med of Case Wstn RSV University, graduating in 2012. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Peien Fan have?
Peien Fan has 14 years experience. Calculated from a graduation year of 2012, reported in the CMS National Downloadable File.
CMS public data
What is Peien Fan known for?
According to Medicare billing data, Peien Fan provides treatments such as placement of skin electrodes and measurement of stimulated sites on arms and legs and needle measurement of electrical activity in arm or leg muscles, 2 extremities, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Peien Fan's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Peien Fan. If this is you, claiming it is free.
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