Dr David Wei, MD - Medicare Emergency Medicine in Walnut Creek, CA

Dr David Wei, MD is a medicare enrolled "Emergency Medicine" physician in Walnut Creek, California. He went to Northwestern University Feinberg Medical School and graduated in 2007 and has 17 years of diverse experience with area of expertise as Emergency Medicine. He is a member of the group practice Cep America - California, Cep America - Auc Pc and his current practice location is 1601 Ygnacio Valley Rd, Walnut Creek, California. You can reach out to his office (for appointments etc.) via phone at (925) 939-3000.

Dr David Wei is licensed to practice in California (license number A112876) 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 1437354081.

Contact Information

Dr David Wei, MD
1601 Ygnacio Valley Rd,
Walnut Creek, CA 94598-3122
(925) 939-3000
Not Available

Map and Direction




Physician's Profile

Full NameDr David Wei
GenderMale
SpecialityEmergency Medicine
Experience17 Years
Location1601 Ygnacio Valley Rd, Walnut Creek, 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:
  • Dr David Wei attended and graduated from Northwestern University Feinberg Medical School in 2007
  NPI Data:
  • NPI Number: 1437354081
  • Provider Enumeration Date: 06/15/2007
  • Last Update Date: 07/19/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 3577757079
  • Enrollment ID: I20110804000371

Medical Identifiers

Medical identifiers for Dr David Wei such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1437354081NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
208D00000XGeneral Practice A112876 (California)Secondary
207P00000XEmergency Medicine A112876 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
John Muir Medical Center - Walnut Creek CampusWalnut creek, CAHospital
San Ramon Regional Medical CenterSan ramon, CAHospital
John Muir Medical Center - Concord CampusConcord, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Cep America - California6103739131954
Cep America - Auc Pc953748169224

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. Dr David Wei allows following entities to bill medicare on his behalf.
Entity NameCep America - California
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1023063542
PECOS PAC ID: 6103739131
Enrollment ID: O20031106000520
Entity NameCep America - Auc Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1568861524
PECOS PAC ID: 9537481692
Enrollment ID: O20141201002085

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. Dr David Wei 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
Dr David Wei, MD
2100 Powell St Ste 900,
Emeryville, CA 94608-1844

Ph: (424) 354-3934
Dr David Wei, MD
1601 Ygnacio Valley Rd,
Walnut Creek, CA 94598-3122

Ph: (925) 939-3000

Reviews and Comments


Emergency Medicine Doctors in Walnut Creek, CA

Brook Andrew Woolley, M.D.
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 1425 S Main St, Emergency Medicine Department, Walnut Creek, CA 94596
Phone: 925-295-5100    
Malcolm C Johnson, MD
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1601 Ygnacio Valley Rd, Walnut Creek, CA 94598
Phone: 925-939-3000    
Alice Decker Hunter, M.D.
Emergency Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 1601 Ygnacio Valley Rd, Walnut Creek, CA 94598
Phone: 925-939-3000    
Seigfred P. Jalalon, M.D.
Emergency Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 1450 Treat Blvd # 160, Walnut Creek, CA 94597
Phone: 925-296-9000    
Theodore Ira Kloth, M.D.
Emergency Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 1601 Ygnacio Valley Rd, Walnut Creek, CA 94598
Phone: 925-939-3000    
Stephanie Carlson, MD
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1425 S Main St, Walnut Creek, CA 94596
Phone: 925-295-4000    
Michael R. Lozano, MD
Emergency Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 1425 S Main St, Walnut Creek, CA 94596
Phone: 925-295-4000    

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.