Ryotaro Nakamura, MD
Hematology (Internal Medicine) Physician · Duarte, CA
Ryotaro Nakamura, MD is a hematology (internal medicine) physician with a practice address in Duarte, California, and NPI 1629174552, issued on Sep 16, 2006. Check the license (California A78860, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ryotaro Nakamura
- Credential
- MD
- Primary taxonomy
- Hematology (Internal Medicine) Physician 207RH0000X
- License numbers
- A78860 CA
A78660 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1500 E Duarte RD, Duarte, CA 91010
- Phone
- (626) 359-8111
- Enumerated
- Sep 16, 2006
- Record last updated
- Nov 18, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20080523000515); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hematology (internal medicine) physician records → All 175 in California → Look up another NPI →
Also registered at 1500 E Duarte RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Sharon Baik, PHDClinical Psychologist1316654577
- Sarkis Baltayian, MDAnesthesiology Physician1932165776
- Elizabeth Bernardi, PA CPhysician Assistant1699980896
Verify Ryotaro Nakamura in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A78860Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
14% fewer Medicare Part D claims than the average hematology (internal medicine) physician in 2024
426 Medicare Part D claims for 58 beneficiaries, against an average of 496 among the 1,036 providers of this specialty who prescribed in Part D. 11 claims were for opioids.
Most prescribed
- Prednisone45 claims
- Jakafi42 claims
- Acyclovir25 claims
- Tacrolimus23 claims
- Pantoprazole Sodium21 claims
- Azithromycin20 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 99.1 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,408.60
7 payments; by number, the most common kind was food and beverage; the largest payer was National Marrow Donor Program. The 721 providers of this specialty with any payment received $13,778.35 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- City OF Hope Medical FoundationDuarte, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ryotaro Nakamura among 175 hematology (internal medicine) physician records in California
Ryotaro Nakamura, MD is one of 175 hematology (internal medicine) physician records with a practice address in California. 89% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 3% of them.
- NPI issued2006 · 3% of these records are older, 65% newer
- In a Medicare fileYes · 89% of these records are
- In the CMS Doctors and Clinicians fileYes · 78% of these records are
- Graduated1991 · median 2006 among the 135 with a school on file
- Record last updated2020 · 34% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
61 hematology (internal medicine) physician records list a practice address in Duarte
They are 61 of the 1,287 NPPES records with a practice address in Duarte, and 175 hematology (internal medicine) physician records in California.
All 175 in California → Every provider in Duarte → Hematology (Internal Medicine) Physician nationwide →
The 8 hematology (internal medicine) physician records with the nearest ZIP codes
- Joseph Alvarnas, M.D.Duarte, CA 910101558321745
- Andrew Artz, M.D., M.S.Duarte, CA 910101306859772
- Ravi Bhatia, MDDuarte, CA 910101326059700
- Lihua Budde, MD, PHDDuarte, CA 910101124030028
- Peter Curtin, M.D.Duarte, CA 910101316953862
- Alexey Danilov, M.D.Duarte, CA 910101487769733
- Amrita Krishnan, MDDuarte, CA 910101215948690
- Alexandra Levine, M.D.Duarte, CA 910101356371967
Common questions
What is Ryotaro Nakamura, MD's NPI number?
Ryotaro Nakamura, MD's National Provider Identifier (NPI) is 1629174552, issued on Sep 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ryotaro Nakamura, MD located?
The NPPES record lists a practice address at 1500 E Duarte RD, Duarte, CA, 91010. Phone: (626) 359-8111. Providers update this record themselves, so call before visiting.
How can I verify Ryotaro Nakamura, MD's license?
NPPES lists California license number A78860, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Ryotaro Nakamura, MD prescribe under Medicare Part D?
In 2024, Ryotaro Nakamura, MD had 426 Medicare Part D claims for 58 beneficiaries; the average among hematology (internal medicine) physician prescribers was 496. Part D covers Medicare prescriptions only.
What is Ryotaro Nakamura, MD's MIPS final score?
The 2023 MIPS final score is 99.1 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.