Dr. Masaki Nagamine, MD
- Medicare services, 2024
- 354
- Medicare patients, 2024
- 199
- Part D claims, 2024
- 257
- Publications
- 16
- Clinical trials
- 2
- Practice address
- 101 City Drive South, Orange, CA 92868
- Practice phone
- Call (714) 456-7890
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Nagamine's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Masaki Nagamine is a vascular neurology physician in Orange, California
Dr. Nagamine practices at UCI Health - Orange in Orange, California, part of UC Irvine.
Dr. Nagamine's NPI, 1144751660, was assigned on March 26, 2017. Dr. Nagamine graduated from College of Human Medicine - Grand Rapids in 2017. Dr. Nagamine holds California license A160415.
- NPI
- 1144751660NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7517290257
- NPI enumeration date
- March 26, 2017
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (714) 456-7890
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 35
- Medical school graduation
- 2017
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Masaki Nagamine practices at UCI Health - Orange in Orange, California
Dr. Nagamine's primary practice is UCI Health - Orange, at 101 City Drive South, Orange, CA 92868 in Orange County. The practice phone is (714) 456-7890.
- UCI Health - Orange101 City Drive South, Orange, CA 92868 · Orange CountyPhone(714) 456-7890
Source: Dmand AI Affiliation Data
Dr. Masaki Nagamine is affiliated with 1 site of care and 1 medical group
Dr. Nagamine's primary practice is UCI Health - Orange in Orange, California, part of UC Irvine. The medical group on file is UCI Health Physicians.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Masaki Nagamine's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Nagamine practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UCI Health - Orange | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across UC Irvine and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Masaki Nagamine is one of 72 vascular neurology physicians in California
Vascular neurology is Dr. Nagamine's primary specialty in the NPI Registry, under taxonomy code 2084V0102X. Dr. Nagamine is board certified in neurology by the American Board of Psychiatry and Neurology. Dr. Nagamine is licensed in California.
Specialties and state licenses
- Vascular neurology, CaliforniaPrimary
Clinical focus
Dmand AI lists acute mini-stroke (TIA), carpal tunnel syndrome, cerebrovascular disease, epilepsy, headaches, neuropathy, seizures and stroke among the conditions Dr. Nagamine treats.
Vascular neurology physicians near Dr. Nagamine
Counts of vascular neurology physicians 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. Masaki Nagamine billed Medicare for 354 services in 2024
CMS data shows 354 Medicare services from Dr. Nagamine across 5 procedure codes in 2024, for 199 Medicare patients. Medicare paid $44,052 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Nagamine's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2892024: 35422%
Dr. Nagamine compared with the California median for vascular neurology physicians, 2024
- Dr. Nagamine
- California median
- Medicare services
- 354vs 27628% above
- Medicare patients
- 199vs 199Close to median
- Part D claims
- 116vs 343.4 times
Medians across 65 vascular neurology physicians in California with Dmand AI profiles that report each measure.
Dr. Nagamine's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Nagamine?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Nagamine and other vascular neurology physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Masaki Nagamine treated 199 Medicare patients in 2024, average age 73
CMS counts 199 Medicare patients who saw Dr. Nagamine in 2024. The largest group is 75 to 84, with 68 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 61% are also on Medicaid. Their average risk score is 2.78, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Nagamine's median patient age at 59, with 53% women.
Dr. Nagamine's Medicare patients by age, 2024
Dr. Nagamine's Medicare patients by sex, 2024
- Women9447%
- Men10553%
Chronic conditions among Dr. Nagamine's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Stroke or TIA74%
- Diabetes58%
- Arthritis47%
- Chronic kidney disease45%
- Ischemic heart disease43%
- Heart failure37%
Share of Medicare patients with each condition. A patient can have several.
Dr. Nagamine's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 59
Patient panel by sex, all payers
- Women53%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Masaki Nagamine wrote 257 Medicare Part D claims in 2024
In 2024, Dr. Nagamine wrote 257 Medicare Part D claims for 49 patients. 84% of them were for generic drugs. CMS names the drug for 116 of them, across 6 drugs with 11 or more claims each, at $25,595 in total drug cost. In 2023, CMS named 83 claims across 4 drugs.
Dr. Nagamine's Part D claims by kind of drug, 2024
- Generic216 claims84%
- Brand-name and other41 claims16%
Dr. Nagamine's most prescribed drugs by claims, 2024
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, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 832024: 11640%
Drugs named by CMS: 6 in 2024, 4 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Masaki Nagamine offers telehealth to Medicare patients
Dr. Nagamine accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Nagamine as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Masaki Nagamine has 16 publications on record
Dmand AI links 16 papers to Dr. Nagamine, published from 2012 to 2024. 2012 was the busiest year, with 3. The most frequent topics are Pruritus, Histamine and Mice, Inbred C57BL. Dr. Nagamine has published most often in J Neurophysiol. Dr. Nagamine's most frequent co-authors are Auva Davoodi, MD, Wengui Yu, MD and Daniel S. Chow, MD.
Dr. Nagamine's papers by year, 2012 to 2024
Topics Dr. Nagamine writes about most
- Pruritus
- Histamine
- Mice, Inbred C57BL
- Chloroquine
- Ganglia, Spinal
- Injections, Intradermal
- Peptide Fragments
- Sensory Receptor Cells
Dr. Nagamine's most frequent co-authors
Recent publications by Dr. Nagamine
AJNR Am J Neuroradiol
See who Dr. Nagamine researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Nagamine works with, so you can find a warm path to the right vascular neurology physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Masaki Nagamine has worked on 2 clinical trials
Dmand AI links Dr. Nagamine to 2 clinical trials. 1 is still active or recruiting. Conditions studied include Hemorrhage, Ischemic Stroke and Pathological Conditions, Signs and Symptoms.
Conditions in Dr. Nagamine's trials
- Hemorrhage
- Ischemic Stroke
- Pathological Conditions, Signs and Symptoms
- Sleep Apnea, Obstructive
Investigators on the most trials with Dr. Nagamine
- Benjamin Ted Alwood, MD1 shared trial
- Ajay Kumar Arora, MD1 shared trial
- Hrayr Pierre Attarian, MD1 shared trial
Recent clinical trials with Dr. Nagamine
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Masaki Nagamine received $70 in industry payments from 2023 to 2025
CMS Open Payments shows 3 general payments to Dr. Nagamine from 3 drug and device companies from 2023 to 2025. Food and beverage make up the largest share, 100% of the total. Bayer HealthCare Pharmaceuticals Inc. paid the most, $34.
General payments to Dr. Nagamine by program year, 2023 to 2025
Companies that paid Dr. Nagamine the most, 2023 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Masaki Nagamine serves on 3 committees
Dr. Nagamine serves on UCI Department of Neurology Grand Rounds Committee, UCI Department of Neurology Education Committee and UCI Department of Neurology Morbidity and Mortality Conference.
Dr. Nagamine's committees and leadership roles
- UCI Department of Neurology Grand Rounds CommitteeDirector
- 2023 to present
- UCI Department of Neurology Education CommitteeMember
- 2022 to present
- UCI Department of Neurology Morbidity and Mortality ConferenceCoordinator
- 2022 to present
Source: Dmand AI Professional Profile Data
Dr. Masaki Nagamine graduated from College of Human Medicine - Grand Rapids
Dr. Nagamine graduated from College of Human Medicine - Grand Rapids in 2017. Dr. Nagamine is a member of AAN.
- Medical school
- Board certified in neurology
- Board certified in vascular neurology
Source: Dmand AI Professional Profile Data
Dr. Masaki Nagamine accepts plans from 13 insurance carriers
Dr. Nagamine is in network with 13 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Elevance
- HCSC
- Blue Cross Blue Shield of Massachusetts
- Regence Health Plans
- Alliant Health Plans
- +5 more carriersWith a free account
Plan types Dr. Nagamine accepts, by number of carriers
- PPO9
- Medicare7
- HMO6
- EPO4
- POS3
Source: Dmand AI Insurance Network Data
Sources for Dr. Masaki Nagamine's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Clinical trials and co-investigators | Dmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Masaki Nagamine
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. Masaki Nagamine's NPI number?
Dr. Masaki Nagamine's NPI number is 1144751660. It was assigned on March 26, 2017, and it is active in the NPI Registry.
What kind of doctor is Dr. Masaki Nagamine?
Dr. Masaki Nagamine is a vascular neurology physician in Orange, California. The primary specialty in the NPI Registry is Vascular Neurology Physician (taxonomy code 2084V0102X).
Where does Dr. Masaki Nagamine practice?
Dr. Nagamine practices at 101 City Drive South, Orange, CA 92868. Dr. Nagamine's primary practice is UCI Health - Orange in Orange, California, part of UC Irvine.
What is Dr. Masaki Nagamine's office phone number?
The practice phone on file for Dr. Nagamine is (714) 456-7890.
What is Dr. Masaki Nagamine's medical license number?
Dr. Nagamine holds California license A160415.
Which hospitals is Dr. Masaki Nagamine affiliated with?
Dr. Nagamine practices at UCI Health - Orange in Orange, California.
What medical group is Dr. Masaki Nagamine part of?
Dr. Nagamine is linked to UCI Health Physicians.
Does Dr. Masaki Nagamine accept Medicare?
Yes. CMS data shows Dr. Nagamine billed Medicare for 354 services in 2024, and Dr. Nagamine accepts Medicare assignment.
Does Dr. Masaki Nagamine offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Nagamine as offering telehealth services.
How many Medicare patients does Dr. Masaki Nagamine see?
CMS counts 199 Medicare patients who saw Dr. Nagamine in 2024, with an average age of 73.
Show 9 more questionsShow fewer questions
Is Dr. Masaki Nagamine board certified?
Yes. Dr. Nagamine is board certified in neurology by the American Board of Psychiatry and Neurology.
What services does Dr. Masaki Nagamine bill to Medicare?
In 2024, Dr. Nagamine's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99223) and office visit, established patient (99215).
Where did Dr. Masaki Nagamine go to medical school?
Dr. Nagamine graduated from College of Human Medicine - Grand Rapids in 2017.
What drugs does Dr. Masaki Nagamine prescribe most?
In 2024 Medicare Part D data, Dr. Nagamine's most prescribed drugs by claims were Atorvastatin Calcium, Levetiracetam and Eliquis.
Has Dr. Masaki Nagamine received payments from drug or device companies?
CMS Open Payments shows $70 in general payments to Dr. Nagamine from 3 companies from 2023 to 2025. The largest total came from Bayer HealthCare Pharmaceuticals Inc.
How long has Dr. Masaki Nagamine been practicing?
Dr. Nagamine graduated from medical school in 2017, 9 years ago.
Does Dr. Masaki Nagamine do research?
Dmand AI links 16 publications to Dr. Nagamine, published from 2012 to 2024. Dr. Nagamine has worked on 2 clinical trials.
Who does Dr. Masaki Nagamine publish with?
Dr. Nagamine's most frequent co-authors are Auva Davoodi, MD (8 shared papers), Wengui Yu, MD (6 shared papers) and Daniel S. Chow, MD (4 shared papers).
What insurance does Dr. Masaki Nagamine accept?
Dr. Nagamine is in network with 13 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
Selling to vascular neurology practices?
See vascular neurology physicians in California by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card