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Dr. Yutaka Niihara, MD
NPI1467480459PAC ID1052349180
- Part D claims, 2024
- 81
- Publications
- 24
- Clinical trials
- 2
- Hospital affiliations
- 1
- Industry payments
- $127
- Practice address
- 3330 Lomita Blvd, Torrance, CA 90509
- Practice phone
- Call (310) 325-9110
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Niihara'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. Yutaka Niihara is a hematologist and oncologist in Torrance, California
Dr. Niihara practices at Torrance Memorial Medical Center in Torrance, California, part of Cedars-Sinai Health System.
Dr. Niihara's NPI, 1467480459, was assigned on June 29, 2006. Dr. Niihara graduated from Loma Linda University School Of Medicine in 1986. Dr. Niihara holds California license G64227.
NPI and contact details
- NPI
- 1467480459NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1052349180
- NPI enumeration date
- June 29, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (310) 325-9110
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 66
- Medical school graduation
- 1986
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Yutaka Niihara practices at Torrance Memorial Medical Center in Torrance, California
Dr. Niihara's primary practice is Torrance Memorial Medical Center, at 3330 Lomita Blvd, Torrance, CA 90509 in Los Angeles County. The practice phone is (310) 325-9110.
- Torrance Memorial Medical Center3330 Lomita Blvd, Torrance, CA 90509 · Los Angeles CountyPhone(310) 325-9110
Source: Dmand AI Affiliation Data
Dr. Yutaka Niihara is affiliated with 3 sites of care and 1 medical group
Dr. Niihara's primary practice is Torrance Memorial Medical Center in Torrance, California, part of Cedars-Sinai Health System. The medical group on file is Osato Medical Clinic. Dmand AI also links Dr. Niihara to 1 more hospice and 1 ambulatory surgery center, each named with a free account.
Osato Medical Clinic1 hospiceName with a free account1 ambulatory surgery centerName with a free account
See all 4 affiliations for Dr. NiiharaSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Yutaka Niihara's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Niihara practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Torrance Memorial Medical Center | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Yutaka Niihara is one of 1,502 hematologists and oncologists in California
Hematology and oncology is Dr. Niihara's primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dr. Niihara is board certified in hematology by the American Board of Internal Medicine. Dmand AI has Dr. Niihara's licenses on file in 2 states: California and Ohio.
Specialties and state licenses
- Hematology and oncology, CaliforniaPrimary
- Ohio license
Hematologists and oncologists near Dr. Niihara
Counts of hematologists and oncologists with a Dmand AI profile, by place and practice. Each opens the list.
1,502hematologists and oncologists in California27hematologists and oncologists in Torrance2hematologists and oncologists at Torrance Memorial Medical Center
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Yutaka Niihara's patients have a median age of 80
Across all payers, Dmand AI patient panel data puts Dr. Niihara's median patient age at 80, with 58% women.
Dr. Niihara's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 80
Patient panel by sex, all payers
- Women58%
- Men42%
Source: Dmand AI Patient Panel Data
Dr. Yutaka Niihara wrote 81 Medicare Part D claims in 2024
In 2024, Dr. Niihara wrote 81 Medicare Part D claims for 25 patients. 79% of them were for generic drugs. CMS names the drug for 11 of them, across 1 drug with 11 or more claims each, at $116 in total drug cost. In 2017, CMS named 13 claims across 1 drug.
Part D claims, 202481
Drugs named by CMS1
Total drug cost$116
Part D patients25
Dr. Niihara's Part D claims by kind of drug, 2024
- Generic64 claims79%
- Brand-name and other17 claims21%
Dr. Niihara'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, 2017 to 2022
- 2017
- 2022
- Claims for drugs CMS names
- 2017: 132022: 1115%
Drugs named by CMS: 1 in 2022, 1 in 2017.
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
How Dr. Yutaka Niihara takes part in Medicare
Dr. Niihara accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Yutaka Niihara has 24 publications on record
Dmand AI links 24 papers to Dr. Niihara, published from 2002 to 2023. 2018 was the busiest year, with 2. The most frequent topics are Garlic, Plant Extracts and Acquired Immunodeficiency Syndrome. Dr. Niihara has published most often in BMC Blood Disord. Dr. Niihara's most frequent co-authors are Richard H. Hoft, MD, Kouichi Tanaka, MD and Samuel Wheeler French, MD.
Papers24
Years published2002 to 2023
Dr. Niihara's papers by year, 2002 to 2023
Topics Dr. Niihara writes about most
- Garlic
- Plant Extracts
- Acquired Immunodeficiency Syndrome
- Anemia, Sickle Cell
- Cells, Cultured
- Corneal Diseases
- Double-Blind Method
- Epithelial Cells
Dr. Niihara's most frequent co-authors
- Richard H. Hoft, MD6 shared papers
- Kouichi Tanaka, MD3 shared papers
- Samuel Wheeler French, MD2 shared papers
Recent publications by Dr. Niihara
Int J Mol Sci
AldehydesCorneal DiseasesEpithelial Cells
Bioengineering (Basel)
See who Dr. Niihara researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Niihara works with, so you can find a warm path to the right hematologists and oncologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Yutaka Niihara has worked on 2 clinical trials
Dmand AI links Dr. Niihara to 2 clinical trials, 2 of them phase 2 studies. Conditions studied include Thalassemia and Anemia, Sickle Cell.
Conditions in Dr. Niihara's trials
- Thalassemia
- Anemia, Sickle Cell
Recent clinical trials with Dr. Niihara
L-Glutamine Therapy for Sickle Cell Anemia and Sickle ß0 Thalassemia (opens in a new tab)
CompletedPhase 2
ThalassemiaAnemia, Sickle CellL-glutamine
L-Glutamine Therapy for Sickle Cell Anemia (opens in a new tab)
TerminatedPhase 2
ThalassemiaAnemia, Sickle CellL-Glutamine
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Yutaka Niihara received $127 in industry payments in 2019
CMS Open Payments shows 2 general payments to Dr. Niihara from 2 drug and device companies in 2019. Food and beverage make up the largest share, 100% of the total. Kyowa Kirin, Inc. paid the most, $108.
Companies that paid Dr. Niihara the most, 2019 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Yutaka Niihara graduated from Loma Linda University School Of Medicine
Dr. Niihara graduated from Loma Linda University School Of Medicine in 1986. Dr. Niihara is a member of ASCO.
- Medical school
- Board certified in hematology
- Board certified in internal medicine
- Board certified in medical oncology
Source: Dmand AI Professional Profile Data
Dr. Yutaka Niihara accepts plans from 1 insurance carrier
Dr. Niihara is in network with 1 carrier, including Molina. Medicare plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Molina
Source: Dmand AI Insurance Network Data
Sources for Dr. Yutaka Niihara'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 patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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) |
| 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. Yutaka Niihara
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. Yutaka Niihara's NPI number?
Dr. Yutaka Niihara's NPI number is 1467480459. It was assigned on June 29, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Yutaka Niihara?
Dr. Yutaka Niihara is a hematologist and oncologist in Torrance, California. The primary specialty in the NPI Registry is Hematology & Oncology Physician (taxonomy code 207RH0003X).
Where does Dr. Yutaka Niihara practice?
Dr. Niihara practices at 3330 Lomita Blvd, Torrance, CA 90509. Dr. Niihara's primary practice is Torrance Memorial Medical Center in Torrance, California, part of Cedars-Sinai Health System. Dmand AI also links Dr. Niihara to 1 hospice and 1 ambulatory surgery center.
What is Dr. Yutaka Niihara's office phone number?
The practice phone on file for Dr. Niihara is (310) 325-9110.
What is Dr. Yutaka Niihara's medical license number?
Dr. Niihara holds California license G64227, one of the licenses on file in 2 states.
Which states has Dr. Yutaka Niihara been licensed in?
Dmand AI has state licenses on file for Dr. Niihara in California (1988 to 2027) and Ohio (1987 to 2026).
Which hospitals is Dr. Yutaka Niihara affiliated with?
Dr. Niihara practices at Torrance Memorial Medical Center in Torrance, California.
What medical group is Dr. Yutaka Niihara part of?
Dr. Niihara is linked to Osato Medical Clinic.
Does Dr. Yutaka Niihara accept Medicare?
Yes. CMS lists Dr. Niihara as accepting Medicare assignment.
Is Dr. Yutaka Niihara board certified?
Yes. Dr. Niihara is board certified in hematology by the American Board of Internal Medicine.
Show 7 more questionsShow fewer questions
Where did Dr. Yutaka Niihara go to medical school?
Dr. Niihara graduated from Loma Linda University School Of Medicine in 1986.
What drugs does Dr. Yutaka Niihara prescribe most?
In 2022 Medicare Part D data, Dr. Niihara's most prescribed drugs by claims were Donepezil HCl.
Has Dr. Yutaka Niihara received payments from drug or device companies?
CMS Open Payments shows $127 in general payments to Dr. Niihara from 2 companies from 2019 to 2019. The largest total came from Kyowa Kirin, Inc.
How long has Dr. Yutaka Niihara been practicing?
Dr. Niihara graduated from medical school in 1986, 40 years ago.
Does Dr. Yutaka Niihara do research?
Dmand AI links 24 publications to Dr. Niihara, published from 2002 to 2023. Dr. Niihara has worked on 2 clinical trials.
Who does Dr. Yutaka Niihara publish with?
Dr. Niihara's most frequent co-authors are Richard H. Hoft, MD (6 shared papers), Kouichi Tanaka, MD (3 shared papers) and Samuel Wheeler French, MD (2 shared papers).
What insurance does Dr. Yutaka Niihara accept?
Dr. Niihara is in network with 1 carrier, including Molina. Medicare plans come from the most carriers, 1. Check the plan with the practice before a visit.
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