Dr. Fabio Massaiti Iwamoto, MD
- Medicare services, 2024
- 938
- Medicare patients, 2024
- 114
- Part D claims, 2024
- 73
- Publications
- 103
- Clinical trials
- 12
- Practice address
- 622 W 168th St, New York, NY 10032
- Practice phone
- Call (212) 297-4255
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Columbia University Irving Medical Center
New York, New York
Find Dr. Iwamoto'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. Fabio Massaiti Iwamoto is a neurologist in New York, New York
Dr. Iwamoto practices at Columbia University Irving Medical Center in New York, New York.
Dr. Iwamoto's NPI, 1053623934, was assigned on July 8, 2010. Dr. Iwamoto graduated from Federal University of Parana Faculty of Medicine in 1999. Dr. Iwamoto's New York license number on file is 264009.
- NPI
- 1053623934NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3779742036
- NPI enumeration date
- July 8, 2010
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (212) 297-4255
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 53
- Medical school graduation
- 1999
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Fabio Massaiti Iwamoto practices at Columbia University Irving Medical Center in New York, New York
Dr. Iwamoto's primary practice is Columbia University Irving Medical Center, at 622 W 168th St, New York, NY 10032 in New York County. The practice phone is (212) 297-4255.
- Columbia University Irving Medical Center622 W 168th St, New York, NY 10032 · New York CountyPhone(212) 297-4255
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Fabio Massaiti Iwamoto is affiliated with 3 sites of care and 3 medical groups
Dr. Iwamoto's primary practice is Columbia University Irving Medical Center in New York, New York. Dr. Iwamoto is also affiliated with NewYork-Presbyterian/Weill Cornell Medical Center. The medical group on file is ColumbiaDoctors. Dmand AI also links Dr. Iwamoto to 2 more medical groups and 1 group practice or clinic, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Fabio Massaiti Iwamoto's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Iwamoto practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Columbia University Irving Medical Center | Available with a free account |
| +2 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Fabio Massaiti Iwamoto is one of 1,489 neurologists in New York
Neurology is Dr. Iwamoto's primary specialty in the NPI Registry, under taxonomy code 2084N0400X. Dr. Iwamoto is board certified in neurology by the American Board of Psychiatry and Neurology. Dmand AI has Dr. Iwamoto's licenses on file in 5 states: New York, Florida, Connecticut, New Jersey and Pennsylvania.
Specialties and state licenses
- Neurology, New YorkPrimary
- Florida license
- Connecticut license
- New Jersey license
- Pennsylvania license
Clinical focus
Dmand AI lists mobility impairment among the conditions Dr. Iwamoto treats.
Neurologists near Dr. Iwamoto
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. Fabio Massaiti Iwamoto billed Medicare for 938 services in 2024
CMS data shows 938 Medicare services from Dr. Iwamoto across 5 procedure codes in 2024, for 114 Medicare patients. Medicare paid $80,502 for them. Every service was in an office.
Dr. Iwamoto's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4292024: 48413%
- Other services
- 2023: 02024: 454
Dr. Iwamoto compared with the New York median for neurologists, 2024
- Dr. Iwamoto
- New York median
- Medicare services
- 938vs 3762.5 times
- Medicare patients
- 114vs 19040% below
- Part D claims
- 45vs 37588% below
Medians across 1,462 neurologists in New York with Dmand AI profiles that report each measure.
Dr. Iwamoto'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.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Fabio Massaiti Iwamoto treated 114 Medicare patients in 2024, average age 70
CMS counts 114 Medicare patients who saw Dr. Iwamoto in 2024. The largest group is 65 to 74, with 56 patients. 68% of them have high cholesterol, and 61% have high blood pressure. 23% are also on Medicaid. Their average risk score is 2.05, 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. Iwamoto's median patient age at 50, with 46% women.
Dr. Iwamoto's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Iwamoto's Medicare patients by sex, 2024
- Women5447%
- Men6053%
Chronic conditions among Dr. Iwamoto's Medicare patients, 2024
- High cholesterol68%
- High blood pressure61%
- Arthritis39%
- Stroke or TIA33%
- Diabetes30%
- Anxiety28%
- Mood disorders26%
- Depression24%
Share of Medicare patients with each condition. A patient can have several.
Dr. Iwamoto's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 50
Patient panel by sex, all payers
- Women46%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Fabio Massaiti Iwamoto wrote 73 Medicare Part D claims in 2024
In 2024, Dr. Iwamoto wrote 73 Medicare Part D claims for 28 patients. 93% of them were for generic drugs. CMS names the drug for 45 of them, across 3 drugs with 11 or more claims each, at $1,282 in total drug cost. In 2021, CMS named 11 claims across 1 drug.
Dr. Iwamoto's Part D claims by kind of drug, 2024
- Generic68 claims93%
- Brand-name and other5 claims7%
Dr. Iwamoto's most prescribed drugs by claims, 2022
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, 2021 to 2022
- 2021
- 2022
- Claims for drugs CMS names
- 2021: 112022: 45309%
Drugs named by CMS: 3 in 2022, 1 in 2021.
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. Fabio Massaiti Iwamoto scored 100 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. Iwamoto for performance year 2024, reported through an alternative payment model (APM). Dr. Iwamoto accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Iwamoto as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Iwamoto's MIPS scores, performance year 2024
- 100of 100Final score
- 85.3of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Fabio Massaiti Iwamoto has 103 publications on record
Dmand AI links 103 papers to Dr. Iwamoto, published from 2007 to 2025. 2016 was the busiest year, with 6. The most frequent topics are Brain Neoplasms, Glioblastoma and Glioma. Dr. Iwamoto has published most often in J Neurooncol. Dr. Iwamoto's most frequent co-authors are Jeffrey N. Bruce, MD, Michael Brian Sisti, MD and Howard A. Fine, MD.
Dr. Iwamoto's papers by year, 2016 to 2025
Topics Dr. Iwamoto writes about most
- Brain Neoplasms
- Glioblastoma
- Glioma
- Central Nervous System Neoplasms
- Magnetic Resonance Imaging
- Temozolomide
- Angiogenesis Inhibitors
- Antibodies, Monoclonal, Humanized
Dr. Iwamoto's most frequent co-authors
- Jeffrey N. Bruce, MD21 shared papers
- Michael Brian Sisti, MD15 shared papers
- Howard A. Fine, MD14 shared papers
Recent publications by Dr. Iwamoto
See who Dr. Iwamoto researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Iwamoto works with, so you can find a warm path to the right neurologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Fabio Massaiti Iwamoto has worked on 12 clinical trials
Dmand AI links Dr. Iwamoto to 12 clinical trials, 4 of them phase 2 studies. 7 are still active or recruiting. Conditions studied include Glioblastoma, Astrocytoma and Glioma. National Cancer Institute (NCI) sponsors the most, 3.
Clinical trials with Dr. Iwamoto by phase
- 1Phase 1: 1 trial
- 1Phase 1/2: 1 trial
- 4Phase 2: 4 trials
- 2Phase 2/3: 2 trials
- 3Phase 3: 3 trials
- NonePhase 4: no trials
Conditions in Dr. Iwamoto's trials
- Glioblastoma
- Astrocytoma
- Glioma
- Gliosarcoma
- Neoplasms, Neuroepithelial
Investigators on the most trials with Dr. Iwamoto
- Samuel A. Goldlust, MD3 shared trials
- Michael Lester Haas, MD3 shared trials
- Ryan T. Merrell, MD3 shared trials
Recent clinical trials with Dr. Iwamoto
A Phase 1-2 Dose-escalation and Expansion Study of ST101 in Patients With Advanced Unresectable and Metastatic Solid Tumors (opens in a new tab)
A Safety Run-In and Phase II Study Evaluating the Efficacy, Safety, and Impact on the Tumor Microenvironment of the Combination of Tocilizumab, Atezolizumab, and Fractionated Stereotactic Radiotherapy in Recurrent Glioblastoma (opens in a new tab)
Phase 3 Randomized, Double-blind, Controlled Study of ICT-107 in Glioblastoma (opens in a new tab)
Phase II Trial of Pembrolizumab and Reirradiation in Bevacizumab Naïve and Bevacizumab Resistant Recurrent Glioblastoma (opens in a new tab)
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Fabio Massaiti Iwamoto received $59,770 in industry payments from 2016 to 2025
CMS Open Payments shows 90 general payments to Dr. Iwamoto from 9 drug and device companies from 2016 to 2025. Honoraria make up the largest share, 34% of the total. Novocure Inc. paid the most, $28,425. It also lists 1 research payment totaling $97 in 2016.
General payments to Dr. Iwamoto by program year, 2016 to 2025
General payments to Dr. Iwamoto by kind, 2016 to 2025
- Honoraria$20,45034%
- Consulting fees$19,32332%
- Travel and lodging$17,26729%
- Food and beverage$2,7305%
Companies that paid Dr. Iwamoto the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Fabio Massaiti Iwamoto graduated from Federal University of Parana Faculty of Medicine
Dr. Iwamoto graduated from Federal University of Parana Faculty of Medicine in 1999. Dr. Iwamoto is a member of ASCO.
- Medical school
- Board certified in neurology
Source: Dmand AI Professional Profile Data
Dr. Fabio Massaiti Iwamoto accepts plans from 16 insurance carriers
Dr. Iwamoto is in network with 16 carriers, including Aetna, Elevance and Excellus BlueCross BlueShield. PPO plans come from the most carriers, 11. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Excellus BlueCross BlueShield
- United Healthcare
- Blue Cross Blue Shield of Michigan
- Aspirus Health Plan
- Blue Cross Blue Shield of Massachusetts
- Cigna
- +8 more carriersWith a free account
Plan types Dr. Iwamoto accepts, by number of carriers
- PPO11
- Medicare9
- HMO7
- POS6
- EPO5
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Fabio Massaiti Iwamoto'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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)Clinician Public Reporting: Overall MIPS Performance (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) |
| 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. Fabio Massaiti Iwamoto
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. Fabio Massaiti Iwamoto's NPI number?
Dr. Fabio Massaiti Iwamoto's NPI number is 1053623934. It was assigned on July 8, 2010, and it is active in the NPI Registry.
What kind of doctor is Dr. Fabio Massaiti Iwamoto?
Dr. Fabio Massaiti Iwamoto is a neurologist in New York, New York. The primary specialty in the NPI Registry is Neurology Physician (taxonomy code 2084N0400X).
Where does Dr. Fabio Massaiti Iwamoto practice?
Dr. Iwamoto practices at 622 W 168th St, New York, NY 10032. Dr. Iwamoto's primary practice is Columbia University Irving Medical Center in New York, New York. Dmand AI also links Dr. Iwamoto to 2 medical groups and 1 group practice or clinic.
What is Dr. Fabio Massaiti Iwamoto's office phone number?
The practice phone on file for Dr. Iwamoto is (212) 297-4255.
What is Dr. Fabio Massaiti Iwamoto's medical license number?
Dr. Iwamoto's New York license number on file is 264009, one of the licenses on file in 5 states.
Which states has Dr. Fabio Massaiti Iwamoto been licensed in?
Dmand AI has state licenses on file for Dr. Iwamoto in New York (2012 to 2025), Florida (since 2021), Connecticut (2021 to 2025), New Jersey (2021 to 2025) and Pennsylvania (2006 to 2012).
Which hospitals is Dr. Fabio Massaiti Iwamoto affiliated with?
Dr. Iwamoto is affiliated with NewYork-Presbyterian/Weill Cornell Medical Center.
What medical group is Dr. Fabio Massaiti Iwamoto part of?
Dr. Iwamoto is linked to ColumbiaDoctors. Dmand AI links Dr. Iwamoto to 2 more medical groups.
Does Dr. Fabio Massaiti Iwamoto accept Medicare?
Yes. CMS data shows Dr. Iwamoto billed Medicare for 938 services in 2024, and Dr. Iwamoto accepts Medicare assignment.
Does Dr. Fabio Massaiti Iwamoto offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Iwamoto as offering telehealth services.
Show 11 more questionsShow fewer questions
What is Dr. Fabio Massaiti Iwamoto's MIPS score?
Dr. Iwamoto's MIPS final score for performance year 2024 is 100 out of 100, reported through an alternative payment model (APM).
How many Medicare patients does Dr. Fabio Massaiti Iwamoto see?
CMS counts 114 Medicare patients who saw Dr. Iwamoto in 2024, with an average age of 70.
Is Dr. Fabio Massaiti Iwamoto board certified?
Yes. Dr. Iwamoto is board certified in neurology by the American Board of Psychiatry and Neurology.
What services does Dr. Fabio Massaiti Iwamoto bill to Medicare?
In 2024, Dr. Iwamoto's most billed Medicare services were medicare service (G2211), office visit, established patient (99215) and office visit, established patient (99214).
Where did Dr. Fabio Massaiti Iwamoto go to medical school?
Dr. Iwamoto graduated from Federal University of Parana Faculty of Medicine in 1999.
What drugs does Dr. Fabio Massaiti Iwamoto prescribe most?
In 2022 Medicare Part D data, Dr. Iwamoto's most prescribed drugs by claims were Dexamethasone, Sulfamethoxazole-Trimethoprim and Levetiracetam.
Has Dr. Fabio Massaiti Iwamoto received payments from drug or device companies?
CMS Open Payments shows $59,770 in general payments to Dr. Iwamoto from 9 companies from 2016 to 2025. The largest total came from Novocure Inc.
How long has Dr. Fabio Massaiti Iwamoto been practicing?
Dr. Iwamoto graduated from medical school in 1999, 27 years ago.
Does Dr. Fabio Massaiti Iwamoto do research?
Dmand AI links 103 publications to Dr. Iwamoto, published from 2007 to 2025. Dr. Iwamoto has worked on 12 clinical trials.
Who does Dr. Fabio Massaiti Iwamoto publish with?
Dr. Iwamoto's most frequent co-authors are Jeffrey N. Bruce, MD (21 shared papers), Michael Brian Sisti, MD (15 shared papers) and Howard A. Fine, MD (14 shared papers).
What insurance does Dr. Fabio Massaiti Iwamoto accept?
Dr. Iwamoto is in network with 16 carriers, including Aetna, Elevance and Excellus BlueCross BlueShield. PPO plans come from the most carriers, 11. Check the plan with the practice before a visit.
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