Mariko Nomura
Emergency Medicine Physician · Oakland, CA
Mariko Nomura is an emergency medicine physician with a practice address in Oakland, California, and NPI 1376977298, issued on Aug 27, 2013. Check the license (California A154436, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mariko Nomura
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- A154436 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1411 E 31St St, Oakland, CA 94602
- Phone
- (510) 437-4564
- Enumerated
- Aug 27, 2013
- Record last updated
- Oct 10, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20210223002765); accepts Medicare assignment
- Medical or professional school
- Oregon Health Sciences University School Of Medicine, 2016
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 1411 E 31St St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Tessa Adler, MDEmergency Medicine Physician1558065524
- Omonivie Agboghidi, MDStudent in an Organized Health Care Education/Training Program1104576065
- Ruta AionoLactation Consultant (Non-RN)1518833375
Verify Mariko Nomura in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A154436Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
40% fewer Medicare Part D claims than the average emergency medicine physician in 2024
136 Medicare Part D claims for 67 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Ibuprofen17 claims
- Omeprazole14 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.
Bills Medicare through one group practice
- Dhhs Phs Naihs Shiprock HospitalShiprock, NM
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mariko Nomura among 7,751 emergency medicine physician records in California
Mariko Nomura is one of 7,751 emergency medicine 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 2013, is newer than 66% of them.
- NPI issued2013 · 66% of these records are older, 31% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2016 · median 2011 among the 4,560 with a school on file
- Record last updated2019 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
247 emergency medicine physician records list a practice address in Oakland
They are 247 of the 18,558 NPPES records with a practice address in Oakland, and 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in Oakland → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- David English, MDOakland, CA 946021275514325
- Bradley Frazee, MDOakland, CA 946021447241765
- Jocelyn Freeman, MDOakland, CA 946021194716498
- Jared Greenholz, MDOakland, CA 946021417930520
- Cherie Hargis, MDOakland, CA 946021821079377
- Abraha Kidane, PAOakland, CA 946021942291265
- Stephen Miller, MDOakland, CA 946021750363727
- Andrew Nothmann, MDOakland, CA 946021518949585
Common questions
What is Mariko Nomura's NPI number?
Mariko Nomura's National Provider Identifier (NPI) is 1376977298, issued on Aug 27, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Mariko Nomura located?
The NPPES record lists a practice address at 1411 E 31St St, Oakland, CA, 94602. Phone: (510) 437-4564. Providers update this record themselves, so call before visiting.
How can I verify Mariko Nomura's license?
NPPES lists California license number A154436, 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 Mariko Nomura prescribe under Medicare Part D?
In 2024, Mariko Nomura had 136 Medicare Part D claims for 67 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.