Yenjean Hwang, MD - Medicare Infectious Disease in Oakland, CA

Yenjean Hwang, MD is a medicare enrolled "Internal Medicine - Infectious Disease" physician in Oakland, California. She went to University Of Chicago, Pritzker School Of Medicine and graduated in 1994 and has 30 years of diverse experience with area of expertise as Infectious Disease. She is a member of the group practice Bay Infectious Disease, Whiting And Whiting, A Professional Corp and her current practice location is 3100 Summit Street, 2nd Floor, Oakland, California. You can reach out to her office (for appointments etc.) via phone at (510) 869-8400.

Yenjean Hwang is licensed to practice in California (license number A68164) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1194744557.

Contact Information

Yenjean Hwang, MD
3100 Summit Street, 2nd Floor,
Oakland, CA 94609-0000
(510) 869-8400
Not Available

Map and Direction




Physician's Profile

Full NameYenjean Hwang
GenderFemale
SpecialityInfectious Disease
Experience30 Years
Location3100 Summit Street, Oakland, California
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Yenjean Hwang attended and graduated from University Of Chicago, Pritzker School Of Medicine in 1994
  NPI Data:
  • NPI Number: 1194744557
  • Provider Enumeration Date: 07/18/2006
  • Last Update Date: 07/08/2007
  Medicare PECOS Information:
  • PECOS PAC ID: 7719956887
  • Enrollment ID: I20051004001014

Medical Identifiers

Medical identifiers for Yenjean Hwang such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1194744557NPI-NPPES
00A681640OtherCABLUE SHIELD
00A681640MedicaidCA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RI0200XInternal Medicine - Infectious Disease A68164 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Alta Bates Summit Medical Center - Alta Bates CampBerkeley, CAHospital
Alta Bates Summit Medical CenterOakland, CAHospital
Stanford Health CareStanford, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Bay Infectious Disease97391588092
Whiting And Whiting, A Professional Corp48807480454

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. Yenjean Hwang allows following entities to bill medicare on her behalf.
Entity NameBay Infectious Disease
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1215137633
PECOS PAC ID: 9739158809
Enrollment ID: O20040927000745
Entity NameWhiting & Whiting, A Professional Corp
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1003034737
PECOS PAC ID: 4880748045
Enrollment ID: O20090821000643

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. Yenjean Hwang 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
Yenjean Hwang, MD
Po Box 255348,
Sacramento, CA 95865-5348

Ph: (916) 854-6975
Yenjean Hwang, MD
3100 Summit Street, 2nd Floor,
Oakland, CA 94609-0000

Ph: (510) 869-8400

Reviews and Comments


Internal Medicine Doctors in Oakland, CA

Ms. Samira Yasmeen Ahmed, MD
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Michael Uzoma Ohabughiro, MD
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Phone: 510-437-5039    Fax: 510-535-7313
Lisha Lynne Wilson, MD
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Phone: 510-268-1800    Fax: 510-268-1803
Chee C. Chow, MD
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Phone: 510-752-1000    
David M. Bliss, MD
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Practice Location: 1950 Franklin St, Oakland, CA 94612
Phone: 510-987-1000    

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.

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