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Edit this profileAt a glance
- 400 Parnassus Ave Fl 8, San Francisco, CA 94143
About Dr. Ko
Based in San Francisco, CA, Nerissa U. Ko, M.D. is listed in the NPI registry under neurology. Medicare claims data shows Nerissa provided 492 services to 389 patients. The services billed most often include ultrasound of both sides of head and neck blood flow, critical care, first 30-74 minutes, and subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes. NPI 1821029059 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
- (415) 353-1489
- Email not available
Practice Locations
400 PARNASSUS AVE FL 8
San Francisco, CA 94143
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
Headache and facial pain
Memory and cognition
Movement disorders
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
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
492 services · 389 patients · 9 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Ultrasound of both sides of head and neck blood flow | Treatment | 93880 |
226 | More often than most peers in Neurology |
| Complete ultrasound of within the brain blood flow | Treatment | 93886 |
18 | Less often than most peers in Neurology |
| Ultrasound of both sides of head and neck blood flow | Treatment | 93880 |
12 | More often than most peers in Neurology |
| Critical care, first 30-74 minutes | Office visit | 99291 |
66 | As often as other peers in Neurology |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | Office visit | 99233 |
53 | As often as other peers in Neurology |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
33 | As often as other peers in Neurology |
| Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient' | Billing code | G2211 |
31 | Less often than most peers in Neurology |
| Hospital discharge day management, more than 30 minutes | Office visit | 99239 |
28 | More often than most 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 |
25 | 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.
Other neurologists at this location 1
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 1
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 neurologists in San Francisco 7
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 1995 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Ultrasound of both sides of head and neck blood flow 8
Providers in CA who bill this service to Medicare most often.
Common questions
What does Nerissa U. Ko specialize in?
Nerissa U. Ko is a neurologist in San Francisco, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Neurology”.
NPI registry
Where is Nerissa U. Ko located?
Nerissa U. Ko is listed at 400 Parnassus Ave Fl 8, San Francisco, CA 94143. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Nerissa U. Ko's phone number?
The number on file is (415) 353-1489. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Nerissa U. Ko?
Nerissa U. Ko's National Provider Identifier is 1821029059. 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 Nerissa U. Ko train?
Nerissa U. Ko attended Other, graduating in 1995. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Nerissa U. Ko have?
Nerissa U. Ko has 31 years experience. Calculated from a graduation year of 1995, reported in the CMS National Downloadable File.
CMS public data
What does Nerissa U. Ko do most often?
According to Medicare billing data, Nerissa U. Ko provides treatments such as ultrasound of both sides of head and neck blood flow and complete ultrasound of within the brain blood flow, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Nerissa U. Ko's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Nerissa U. Ko. If this is you, claiming it is free.
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