Physician Profile
Masaki Nagamine, MD
Unclaimed ProfileAbout Dr. Nagamine
Masaki Nagamine, MD practices vascular neurology in Orange, CA. Masaki is a 2017 graduate of Michigan State University College of Human Medicine. Masaki is also listed as specializing in neurology. According to Medicare claims data, Masaki cared for 248 Medicare patients across 354 services. The services billed most often include subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes, initial hospital care with moderate level of medical decision making, if using time, at least 75 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
- (714) 456-5691
- Email not available
Practice Locations
101 THE CITY DR S 400
Orange, CA 92868
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
Most searched conditions
- Alzheimer's disease
- Epilepsy
- Migraines
- Multiple sclerosis
- Neuropathy
- Parkinson's disease
Headache and facial pain
- Tension headaches
- Trigeminal neuralgia
Memory and cognition
- Mild cognitive impairment
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
Stroke and vascular
Brain & Spine
Brain tumors
Head & Facial Pain
Memory & Cognitive
Movement Disorders
Nerve Compression
Sleep & Movement
Spine and nerve
Spine, brain injury, and functional
- Bell's palsy
- Concussion
Procedures & services
Most searched procedures
Consultation and testing
Consultations & Exams
Consultations and exams
Device management
Diagnostic Testing
- Cognitive and memory screening
- Genetic Testing for Neurological Disorders
- Neuromuscular Ultrasound
- Neuropsychological Testing
- Normal Pressure Hydrocephalus Tap Test
- Tilt Table Test
Infusion and medical therapies
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
Neuromodulation
Office procedures
Trauma & Injury
Procedures Most Often Billed to Medicare
354 services · 248 patients · 5 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | Office visit | 99233 |
146 | More often than most peers in Vascular Neurology |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | Office visit | 99223 |
104 | More often than most peers in Vascular 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 |
50 | More often than most peers in Vascular Neurology |
| Emergency department visit with high level of medical decision making | Office visit | 99285 |
27 | As often as other peers in Vascular Neurology |
| Hospital discharge day management, more than 30 minutes | Office visit | 99239 |
27 | More often than most peers in Vascular 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.
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 vascular neurology specialists in Orange 2
Same specialty, same city.
Trained at Michigan State University College of Human Medicine 2
Other providers in the same specialty who trained at the same institution.
More connections — 8 related providers in 1 group
Class of 2017 at Michigan State University College of Human Medicine 8
Providers who graduated from the same medical school in the same year.
Common questions
What kind of doctor is Dr. Nagamine?
Dr. Nagamine is a vascular neurology in Orange, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
What is Dr. Nagamine's address?
Dr. Nagamine is listed at 101 the City Dr S 400, Orange, CA 92868. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Nagamine?
The number on file is (714) 456-5691. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Nagamine's NPI number?
Dr. Nagamine's National Provider Identifier is 1144751660. 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. Nagamine train?
Dr. Nagamine attended Michigan State University College of Human Medicine, graduating in 2017. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Nagamine been practicing?
Dr. Nagamine has 9 years experience. Calculated from a graduation year of 2017, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Nagamine perform?
According to Medicare billing data, Dr. Nagamine the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Nagamine confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Nagamine. 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.