Riley Joseph North, MD
Emergency Medicine Physician · Castro Valley, CA
Riley Joseph North, MD is an emergency medicine physician with a practice address in Castro Valley, California, and NPI 1316520224, issued on Apr 29, 2021. Check the license (California A194994, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Riley Joseph North
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- A194994 CA
Self-reported in NPPES; status is on the state search - Practice location
- 20103 Lake Chabot RD, Castro Valley, CA 94546
- Phone
- (501) 727-3015
- Enumerated
- Apr 29, 2021
- Record last updated
- Feb 28, 2025
- Medicare enrollment
- Enrolled (PECOS I20240905001089); accepts Medicare assignment
- Medical or professional school
- Virginia Commonwealth University, School Of Medicine, 2021
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 20103 Lake Chabot RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Alexei AdanEmergency Medicine Physician1679968978
- Maria Ait Rais, M.D.Hospitalist Physician1811239304
- Latricia Amadeo, RNRegistered Nurse1003407115
- Sandhya Ashokkumar, MDCritical Care Medicine (Internal Medicine) Physician1457913402
- Oluwaseyi Balasire, M.D.Hospitalist Physician1003235243
- Rachna Bali, DOHospitalist Physician1346541554
Verify Riley Joseph North in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A194994Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
37% fewer Medicare Part D claims than the average emergency medicine physician in 2024
142 Medicare Part D claims for 100 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 20 claims were for opioids.
Most prescribed
- Amoxicillin-Clavulanate Potass13 claims
- Ondansetron Odt13 claims
- Oxycodone-Acetaminophen12 claims
- Doxycycline Hyclate11 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 2 group practices
- Eden Emergency Medical Group IncCastro Valley, CA
- San Francisco Emergency Medical AssociatesSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Riley Joseph North among 7,751 emergency medicine physician records in California
Riley Joseph North, MD 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 2021, is newer than 92% of them.
- NPI issued2021 · 92% of these records are older, 5% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2021 · median 2011 among the 4,560 with a school on file
- Record last updated2025 · 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).
20 emergency medicine physician records list a practice address in Castro Valley
They are 20 of the 999 NPPES records with a practice address in Castro Valley, and 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in Castro Valley → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Alexei AdanCastro Valley, CA 945461679968978
- Winnie Chan, MDCastro Valley, CA 945461538521281
- Merrill Chandler, MDCastro Valley, CA 945461508847237
- Nathalie Coeller, MDCastro Valley, CA 945461265607402
- Ralph Damato, MDCastro Valley, CA 945461225014673
- Rochelle Eggleston Philapil, MDCastro Valley, CA 945461265423610
- Alan Gottlieb, MDCastro Valley, CA 945461306837521
- Peter Joseph, MDCastro Valley, CA 945461396729158
Common questions
What is Riley Joseph North, MD's NPI number?
Riley Joseph North, MD's National Provider Identifier (NPI) is 1316520224, issued on Apr 29, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Riley Joseph North, MD located?
The NPPES record lists a practice address at 20103 Lake Chabot RD, Castro Valley, CA, 94546. Phone: (501) 727-3015. Providers update this record themselves, so call before visiting.
How can I verify Riley Joseph North, MD's license?
NPPES lists California license number A194994, 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 Riley Joseph North, MD prescribe under Medicare Part D?
In 2024, Riley Joseph North, MD had 142 Medicare Part D claims for 100 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.