William James Green, M.D.
Emergency Medical Services (Emergency Medicine) Physician · Newport Beach, CA
William James Green, M.D. is an emergency medical services (emergency medicine) physician with a practice address in Newport Beach, California, and NPI 1891758686, issued on Apr 11, 2006. Check the license (California G70480, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- William James Green
- Credential
- M.D.
- Primary taxonomy
- Emergency Medical Services (Emergency Medicine) Physician 207PE0004X
- License number
- G70480 CA
Self-reported in NPPES; status is on the state search - Practice location
- One Hoag Dr, Newport Beach, CA 92658
- Phone
- (949) 764-5689
- Enumerated
- Apr 11, 2006
- Record last updated
- Aug 23, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (405) 749-4561
- Medicaid IDs
- 00G704800670 CA
00G704800 CA - Medicare enrollment
- Enrolled (PECOS I20041028000680); accepts Medicare assignment
- Medical or professional school
- Saint Louis University School Of Medicine, 1989
- Entity
- Type 1 · individual
8 nearest emergency medical services (emergency medicine) physician records → All 233 in California → Look up another NPI →
Also registered at One Hoag Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Joanna Chen, M.D.Emergency Medical Services (Emergency Medicine) Physician1073576807
Verify William James Green in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G70480Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4% fewer Medicare Part D claims than the average emergency medical services (emergency medicine) physician in 2024
281 Medicare Part D claims for 190 beneficiaries, against an average of 292 among the 1,653 providers of this specialty who prescribed in Part D. 17 claims were for opioids.
Most prescribed
- Cefdinir28 claims
- Amoxicillin-Clavulanate Potass16 claims
- Prednisone15 claims
- Azithromycin14 claims
- Ondansetron Odt13 claims
- Celecoxib12 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.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Emergency Physicians OF Orange CountyNewport Beach, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William James Green among 233 emergency medical services (emergency medicine) physician records in California
William James Green, M.D. is one of 233 emergency medical services (emergency medicine) physician records with a practice address in California. 69% 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 5% of them.
- NPI issued2006 · 5% of these records are older, 50% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileYes · 42% of these records are
- Graduated1989 · median 2002 among the 99 with a school on file
- Record last updated2010 · 68% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207PE0004X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medical Services (Emergency Medicine) Physician providers in California
There are 233 emergency medical services (emergency medicine) physician records in California.
All 233 in California → Every provider in Newport Beach → Emergency Medical Services (Emergency Medicine) Physician nationwide →
The 8 emergency medical services (emergency medicine) physician records with the nearest ZIP codes
- Joanna Chen, M.D.Newport Beach, CA 926581073576807
- Michelle Ly, D.O.Huntington Beach, CA 926471811161870
- Gene BuiMission Viejo, CA 926911578571170
- Nathan Gilmore, MDDana Point, CA 926241275725897
- Caroline Han, MDIrvine, CA 926181114952850
- Albert Jin, MDIrvine, CA 926181790738292
- Steven Lin, MDIrvine, CA 926181821044082
- Thomas Ryu, DOIrvine, CA 926181164477410
Common questions
What is William James Green, M.D.'s NPI number?
William James Green, M.D.'s National Provider Identifier (NPI) is 1891758686, issued on Apr 11, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William James Green, M.D. located?
The NPPES record lists a practice address at One Hoag Dr, Newport Beach, CA, 92658. Phone: (949) 764-5689. Providers update this record themselves, so call before visiting.
How can I verify William James Green, M.D.'s license?
NPPES lists California license number G70480, 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 William James Green, M.D. prescribe under Medicare Part D?
In 2024, William James Green, M.D. had 281 Medicare Part D claims for 190 beneficiaries; the average among emergency medical services (emergency medicine) physician prescribers was 292. Part D covers Medicare prescriptions only.
What is William James Green, M.D.'s MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.