Toshiaki Takahashi, M.D.
Hematology & Oncology Physician · Honolulu, HI
Toshiaki Takahashi, M.D. is a hematology & oncology physician with a practice address in Honolulu, Hawaii, and NPI 1609566850, issued on May 10, 2023. Check the license on the Hawaii Medical Board; the Medicare figures below come from public CMS files.
- Name
- Toshiaki Takahashi
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 47508 OK
Self-reported in NPPES; status is on the state search - Practice location
- 1301 Punchbowl St, Honolulu, HI 96813
- Phone
- (808) 691-1000
- Enumerated
- May 10, 2023
- Record last updated
- Jun 2, 2026
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 49 in Hawaii → Look up another NPI →
Also registered at 1301 Punchbowl St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Brenda Abbotnakandakari, RNDiabetes Educator Registered Nurse1760705248
- Janette AbramowitzPsychiatry Physician1275952335
- Natalie AdolfPhysician Assistant1396282414
- Hessam Afshari, MDEmergency Medicine Physician1811217573
- Cheryl Ann Afuso-Sumimoto, APRNOncology Clinical Nurse Specialist1750929253
- Kyan Renie AgbayaniInternal Medicine Physician1083101323
Verify Toshiaki Takahashi in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersHawaii Medical BoardCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
74% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
232 Medicare Part D claims for 68 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium29 claims
- Amlodipine Besylate19 claims
- Tamsulosin Hcl12 claims
- Gabapentin11 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Toshiaki Takahashi among 49 hematology & oncology physician records in Hawaii
Toshiaki Takahashi, M.D. is one of 49 hematology & oncology physician records with a practice address in Hawaii. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2023, is newer than 98% of them.
- NPI issued2023 · 98% of these records are older, 0% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileNo · 69% of these records are
- Record last updated2026 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Hawaii practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in Hawaii
There are 49 hematology & oncology physician records in Hawaii.
All 49 in Hawaii → Every provider in Honolulu → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Swaty Arora, MDHonolulu, HI 968131194037432
- Craig Boddy, M.D.Honolulu, HI 968131265796270
- Jonathan Cho, M.D.Honolulu, HI 968131174590541
- C Choy, M.D.Honolulu, HI 968131790799393
- Reginald Ho, M.D.Honolulu, HI 968131811086101
- Brian Issell, MD FACPHonolulu, HI 968131235100884
- William Loui, M.D.Honolulu, HI 968131346217718
- Melvin Palalay, M.D.Honolulu, HI 968131508833971
Common questions
What is Toshiaki Takahashi, M.D.'s NPI number?
Toshiaki Takahashi, M.D.'s National Provider Identifier (NPI) is 1609566850, issued on May 10, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Toshiaki Takahashi, M.D. located?
The NPPES record lists a practice address at 1301 Punchbowl St, Honolulu, HI, 96813. Phone: (808) 691-1000. Providers update this record themselves, so call before visiting.
How can I verify Toshiaki Takahashi, M.D.'s license?
Search the Hawaii Medical Board at https://cca.hawaii.gov/pvl/boards/medical/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Toshiaki Takahashi, M.D. prescribe under Medicare Part D?
In 2024, Toshiaki Takahashi, M.D. had 232 Medicare Part D claims for 68 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.