Dr. Robert Neal Nishimura, MD

  • CA
  • Neurologist
NPI1265467500
Part D claims, 2019
115
Publications
75
Industry payments
$21
State licenses
2
Year NPI issued
2006
Practice address
CA
Professional email
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Personal email
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Mobile number
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Social profiles

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Dr. Robert Neal Nishimura is a neurologist in California

Dr. Nishimura practices in California.

Dr. Nishimura's NPI, 1265467500, was assigned on July 12, 2006. Dr. Nishimura graduated from The Johns Hopkins University School of Medicine in 1972. Dr. Nishimura holds California license G26085.

NPI and contact details
NPI enumeration date
July 12, 2006
NPI status
Active
Professional email
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Personal email
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Mobile number
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Sex
Male
Medical school graduation
1972

Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data

Dmand AI tracks the EHR system at Dr. Robert Neal Nishimura's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Nishimura practices. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Dr. Nishimura's practiceAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Robert Neal Nishimura is one of 2,207 neurologists in California

Neurology is Dr. Nishimura's primary specialty in the NPI Registry, under taxonomy code 2084N0400X. Dr. Nishimura is board certified in neurology by the American Board of Psychiatry and Neurology. Dmand AI has Dr. Nishimura's licenses on file in 2 states: California and Oregon.

Specialties and state licenses

  • Neurology, CaliforniaPrimaryLicense G26085 · 1973 to 2027 · taxonomy 2084N0400X
  • Oregon license1979 to 2025

Neurologists near Dr. Nishimura

Counts of neurologists with a Dmand AI profile, by place and practice. Each opens the list.

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Robert Neal Nishimura's patients have a median age of 49

Across all payers, Dmand AI patient panel data puts Dr. Nishimura's median patient age at 49, with 0% women.

Dr. Nishimura's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 49

Patient panel by sex, all payers

  • Women0%
  • Men100%

Source: Dmand AI Patient Panel Data

Dr. Robert Neal Nishimura wrote 115 Medicare Part D claims in 2019

In 2019, Dr. Nishimura wrote 115 Medicare Part D claims. They cover 5 drugs, with $197,815 in total drug cost. In 2018, CMS named 114 claims across 6 drugs.

Part D claims, 2019115
Drugs named by CMS5
Total drug cost$197,815

Dr. Nishimura's most prescribed drugs by claims, 2019

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Part D claims for drugs CMS names, 2018 to 2019

  • 2018
  • 2019
Claims for drugs CMS names
2018: 1142019: 1151%

Drugs named by CMS: 5 in 2019, 6 in 2018.

See all prescribing by Dr. Nishimura

Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026

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Dr. Robert Neal Nishimura has 75 publications on record

Dmand AI links 75 papers to Dr. Nishimura, published from 2006 to 2025. 2019 was the busiest year, with 4. The most frequent topics are Astrocytes, Cells, Cultured and Heat-Shock Proteins. Dr. Nishimura has published most often in J Biol Chem. Dr. Nishimura's most frequent co-authors are Grace W. Chan, MD, James Ernest Hansen, MD and Emil Robert Heinze, MD.

Papers75
Years published2006 to 2025

Dr. Nishimura's papers by year, 2013 to 2025

Topics Dr. Nishimura writes about most

  • Astrocytes
  • Cells, Cultured
  • Heat-Shock Proteins
  • Blotting, Western
  • Cell Line, Tumor
  • Signal Transduction
  • Animals, Newborn
  • Apoptosis

Dr. Nishimura's most frequent co-authors

Recent publications by Dr. Nishimura

See all 75 publications and co-authors

See who Dr. Nishimura researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Nishimura works with, so you can find a warm path to the right neurologists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Robert Neal Nishimura received $21 in industry payments in 2019

CMS Open Payments shows 1 general payment to Dr. Nishimura from 1 drug or device company in 2019. Food and beverage make up the largest share, 100% of the total. Sunovion Pharmaceuticals Inc. paid the most, $21.

Companies that paid Dr. Nishimura the most, 2019 to 2019

Share is of all general payments to this clinician.

See all payments to Dr. Nishimura

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Robert Neal Nishimura graduated from The Johns Hopkins University School of Medicine

Dr. Nishimura graduated from The Johns Hopkins University School of Medicine in 1972.

  1. Medical schoolThe Johns Hopkins University School of Medicine
  2. Board certified in neurologyAmerican Board of Psychiatry and Neurology

Source: Dmand AI Professional Profile Data

Sources for Dr. Robert Neal Nishimura's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Medicare patients and the all-payer patient panelDmand AI Patient Panel Data
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Robert Neal Nishimura

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Dr. Robert Neal Nishimura's NPI number?

Dr. Robert Neal Nishimura's NPI number is 1265467500. It was assigned on July 12, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Robert Neal Nishimura?

Dr. Robert Neal Nishimura is a neurologist in California. The primary specialty in the NPI Registry is Neurology Physician (taxonomy code 2084N0400X).

What is Dr. Robert Neal Nishimura's medical license number?

Dr. Nishimura holds California license G26085, one of the licenses on file in 2 states.

Which states has Dr. Robert Neal Nishimura been licensed in?

Dmand AI has state licenses on file for Dr. Nishimura in California (1973 to 2027) and Oregon (1979 to 2025).

Is Dr. Robert Neal Nishimura board certified?

Yes. Dr. Nishimura is board certified in neurology by the American Board of Psychiatry and Neurology.

Where did Dr. Robert Neal Nishimura go to medical school?

Dr. Nishimura graduated from The Johns Hopkins University School of Medicine in 1972.

What drugs does Dr. Robert Neal Nishimura prescribe most?

In 2019 Medicare Part D data, Dr. Nishimura's most prescribed drugs by claims were Levetiracetam, Gabapentin and Tecfidera.

Has Dr. Robert Neal Nishimura received payments from drug or device companies?

CMS Open Payments shows $21 in general payments to Dr. Nishimura from 1 company from 2019 to 2019. The largest total came from Sunovion Pharmaceuticals Inc.

How long has Dr. Robert Neal Nishimura been practicing?

Dr. Nishimura graduated from medical school in 1972, 54 years ago.

Does Dr. Robert Neal Nishimura do research?

Dmand AI links 75 publications to Dr. Nishimura, published from 2006 to 2025.

Who does Dr. Robert Neal Nishimura publish with?

Dr. Nishimura's most frequent co-authors are Grace W. Chan, MD (13 shared papers), James Ernest Hansen, MD (5 shared papers) and Emil Robert Heinze, MD (5 shared papers).

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