Robert J. Hayashi, MD
Pediatric Hematology & Oncology Physician · Saint Louis, MO
Robert J. Hayashi, MD is a pediatric hematology & oncology physician with a practice address in Saint Louis, Missouri, and NPI 1386662062, issued on Jul 18, 2006. Check the license (Missouri 105104, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Robert J. Hayashi
- Credential
- MD
- Primary taxonomy
- Pediatric Hematology & Oncology Physician 2080P0207X
- License number
- 105104 MO
Self-reported in NPPES; status is on the state search - Practice location
- 1 Childrens PL, Saint Louis, MO 63110
- Phone
- (314) 454-6018
- Enumerated
- Jul 18, 2006
- Record last updated
- Apr 17, 2025
- Fax
- (844) 621-4392
- Medicaid ID
- 206903106 MO
- Entity
- Type 1 · individual
8 nearest pediatric hematology & oncology physician records → All 99 in Missouri → Look up another NPI →
Also registered at 1 Childrens PL
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mohamed Abdelbaki, MDPediatric Hematology & Oncology Physician1508021361
- Christi Abeln, PNPPediatric Nurse Practitioner1023034253
- Loren Abernathy, PNPPediatric Nurse Practitioner1215583117
- Freddy-May Abisamra, CGCGenetic Counselor (M.S.)1306538111
- Manjusha Abraham, MDPediatric Critical Care Medicine Physician1508126699
- Philip Abraham, MDHospitalist Physician1720309016
Verify Robert J. Hayashi in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
Search for license 105104Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 79.3 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).
Robert J. Hayashi among 99 pediatric hematology & oncology physician records in Missouri
Robert J. Hayashi, MD is one of 99 pediatric hematology & oncology physician records with a practice address in Missouri. 59% 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 2% of them.
- NPI issued2006 · 2% of these records are older, 73% newer
- In a Medicare fileYes · 59% of these records are
- In the CMS Doctors and Clinicians fileNo · 38% of these records are
- Record last updated2025 · 30% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2080P0207X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pediatric Hematology & Oncology Physician providers in Missouri
There are 99 pediatric hematology & oncology physician records in Missouri.
All 99 in Missouri → Every provider in Saint Louis → Pediatric Hematology & Oncology Physician nationwide →
The 8 pediatric hematology & oncology physician records with the nearest ZIP codes
- Mary Dinauer, MDSaint Louis, MO 631101922118355
- Jorge Dipaola, MDSaint Louis, MO 631101740277409
- Todd Druley, MDSaint Louis, MO 631101912170853
- Frederick Huang, MDSaint Louis, MO 631101215029038
- Michael Angelo Huang, MD, MSSaint Louis, MO 631101225232630
- Allison King, MDSaint Louis, MO 631101205854635
- Jeffrey Magee, MDSaint Louis, MO 631101013041664
- Joshua Rubin, MDSaint Louis, MO 631101235157959
Common questions
What is Robert J. Hayashi, MD's NPI number?
Robert J. Hayashi, MD's National Provider Identifier (NPI) is 1386662062, issued on Jul 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Robert J. Hayashi, MD located?
The NPPES record lists a practice address at 1 Childrens PL, Saint Louis, MO, 63110. Phone: (314) 454-6018. Providers update this record themselves, so call before visiting.
How can I verify Robert J. Hayashi, MD's license?
NPPES lists Missouri license number 105104, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is Robert J. Hayashi, MD's MIPS final score?
The 2023 MIPS final score is 79.3 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.