William James Green, MD - Medicare Emergency Medicine in Newport Beach, CA

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William James Green, MD is a medicare enrolled "Emergency Medicine - Emergency Medical Services" physician in Newport Beach, California. He went to Saint Louis University School Of Medicine and graduated in 1989 and has 35 years of diverse experience with area of expertise as Emergency Medicine. He is a member of the group practice Newport Emergency Medical Group Inc and his current practice location is One Hoag Dr, Ecu Dept., Newport Beach, California. You can reach out to his office (for appointments etc.) via phone at (949) 764-5689.

William James Green is licensed to practice in California (license number G70480) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1891758686.

Contact Information

William James Green, MD
One Hoag Dr, Ecu Dept.,
Newport Beach, CA 92658-6100
(949) 764-5689
(405) 749-4561

Map and Direction




Physician's Profile

Full NameWilliam James Green
GenderMale
SpecialityEmergency Medicine
Experience35 Years
LocationOne Hoag Dr, Newport Beach, California
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • William James Green attended and graduated from Saint Louis University School Of Medicine in 1989
  NPI Data:
  • NPI Number: 1891758686
  • Provider Enumeration Date: 04/11/2006
  • Last Update Date: 08/23/2010
  Medicare PECOS Information:
  • PECOS PAC ID: 4688636012
  • Enrollment ID: I20041028000680

Medical Identifiers

Medical identifiers for William James Green such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1891758686NPI-NPPES
00G704800670MedicaidCA
P00242841OtherCARR MEDICARE
00G704800OtherCABLUE SHIELD
00G704800MedicaidCA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207PE0004XEmergency Medicine - Emergency Medical Services G70480 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Hoag Memorial Hospital PresbyterianNewport beach, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Newport Emergency Medical Group Inc953714789739

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. William James Green allows following entities to bill medicare on his behalf.
Entity NameNewport Emergency Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1922061779
PECOS PAC ID: 9537147897
Enrollment ID: O20041026001111

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. William James Green is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
William James Green, MD
Po Box 720300,
Oklahoma City, OK 73172-0300

Ph: (800) 749-4560		William James Green, MD
One Hoag Dr, Ecu Dept.,
Newport Beach, CA 92658-6100

Ph: (949) 764-5689

Reviews and Comments


Emergency Medicine Doctors in Newport Beach, CA

Joanna Chau Jane Chen, M.D.
Emergency Medicine
Medicare: Not Enrolled in Medicare
Practice Location: One Hoag Dr, Ecu Dept., Newport Beach, CA 92658
Phone: 949-764-5689    Fax: 405-749-4561
Dr. Azra Abida Ashraf, M.D.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 360 San Miguel Dr Ste 207, Newport Beach, CA 92660
Phone: 949-877-7910    
Howard Ken Nakashioya, M.D.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: One Hoag Dr, Ecu Dept, Newport Beach, CA 92663
Phone: 949-764-5689    Fax: 405-751-3183
Pascal S.c. Juang, M.D.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: One Hoag Dr, Ecu Dept, Newport Beach, CA 92663
Phone: 949-764-5689    Fax: 405-751-3183
Steven Robert Callahan, M.D.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1 Hoag Dr, Ecu Dept., Newport Beach, CA 92663
Phone: 949-764-5689    Fax: 405-751-3183
Raymond Louis Ricci, M.D.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: One Hoag Dr, Ecu Dept, Newport Beach, CA 92663
Phone: 949-764-5689    Fax: 405-751-3183
Miss Kerstin Jacqueline Claunch, PA-C
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 1 Hoag Dr, Newport Beach, CA 92663
Phone: 949-764-8376    

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.