Midori Jane Nishio, M.D.
Rheumatology Physician · Walnut Creek, CA
Midori Jane Nishio, M.D. is a rheumatology physician with a practice address in Walnut Creek, California, and NPI 1316010366, issued on Nov 16, 2006. Check the license (California G50284, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Midori Jane Nishio
- Credential
- M.D.
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- G50284 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1450 Treat Blvd, Walnut Creek, CA 94597
- Phone
- (925) 280-9400
- Enumerated
- Nov 16, 2006
- Record last updated
- May 25, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (925) 256-0448
- Medicare enrollment
- Enrolled (PECOS I20050118000294); accepts Medicare assignment
- Medical or professional school
- Medical College Of Wisconsin, 1982
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 926 in California → Look up another NPI →
Also registered at 1450 Treat Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Andrea Agcaoili, D.O.Family Medicine Physician1265775035
- Sonal Aggarwal, MDFamily Medicine Physician1336336411
- Deborah Arce, M.D.Internal Medicine Physician1841215605
- Cynthia AshbrookAllergy & Immunology Physician1386786408
- Chanda Banwat, M.D.Internal Medicine Physician1750584389
Verify Midori Jane Nishio in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G50284Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average rheumatology physician in 2024
41 Medicare Part D claims, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D.
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): 85.7 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: $608.17
17 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 4,486 providers of this specialty with any payment received $8,538.33 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
- John Muir Physician NetworkWalnut Creek, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Midori Jane Nishio among 926 rheumatology physician records in California
Midori Jane Nishio, M.D. is one of 926 rheumatology physician records with a practice address in California. 81% 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 6% of them.
- NPI issued2006 · 6% of these records are older, 55% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated1982 · median 2003 among the 641 with a school on file
- Record last updated2016 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in California
There are 926 rheumatology physician records in California.
All 926 in California → Every provider in Walnut Creek → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Raul Romea, MDWalnut Creek, CA 945971962408112
- Vandana Sharma, M.D.Walnut Creek, CA 945971528131588
- Monica WeiWalnut Creek, CA 945971417450214
- Rashmi Dixit, M.D.Walnut Creek, CA 945981811990666
- Zuzana Foster, M.D.Walnut Creek, CA 945981184621542
- John Loeb, M.D.Walnut Creek, CA 945981932106390
- Chetachi Okereke, M.D, M.B.B.SWalnut Creek, CA 945961083842199
- Robert Wiskocil, MDWalnut Creek, CA 945981992883094
Common questions
What is Midori Jane Nishio, M.D.'s NPI number?
Midori Jane Nishio, M.D.'s National Provider Identifier (NPI) is 1316010366, issued on Nov 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Midori Jane Nishio, M.D. located?
The NPPES record lists a practice address at 1450 Treat Blvd, Walnut Creek, CA, 94597. Phone: (925) 280-9400. Providers update this record themselves, so call before visiting.
How can I verify Midori Jane Nishio, M.D.'s license?
NPPES lists California license number G50284, 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 Midori Jane Nishio, M.D. prescribe under Medicare Part D?
In 2024, Midori Jane Nishio, M.D. had 41 Medicare Part D claims; the average among rheumatology physician prescribers was 1,978. Part D covers Medicare prescriptions only.
What is Midori Jane Nishio, M.D.'s MIPS final score?
The 2023 MIPS final score is 85.7 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.