Gene-yuan Chang, MD - Medicare Nephrology in Castro Valley, CA

Gene-yuan Chang, MD is a medicare enrolled "Internal Medicine - Nephrology" physician in Castro Valley, California. He went to Boston University School Of Medicine and graduated in 2009 and has 15 years of diverse experience with area of expertise as Nephrology. He is a member of the group practice West Coast Kidney, Alameda Health System and his current practice location is 20055 Lake Chabot Rd, 230, Castro Valley, California. You can reach out to his office (for appointments etc.) via phone at (510) 881-1490.

Gene-yuan Chang is licensed to practice in California (license number 121677) 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 1467731828.

Contact Information

Gene-yuan Chang, MD
20055 Lake Chabot Rd, 230,
Castro Valley, CA 94546-5331
(510) 881-1490
Not Available

Map and Direction




Physician's Profile

Full NameGene-yuan Chang
GenderMale
SpecialityNephrology
Experience15 Years
Location20055 Lake Chabot Rd, Castro Valley, 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:
  • Gene-yuan Chang attended and graduated from Boston University School Of Medicine in 2009
  NPI Data:
  • NPI Number: 1467731828
  • Provider Enumeration Date: 08/16/2011
  • Last Update Date: 06/21/2016
  Medicare PECOS Information:
  • PECOS PAC ID: 0749411304
  • Enrollment ID: I20150915000451

Medical Identifiers

Medical identifiers for Gene-yuan Chang such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1467731828NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RN0300XInternal Medicine - Nephrology 121677 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Hayward Dialysis CenterHayward, CADialysis facility
San Leandro DialysisSan leandro, CADialysis facility
Eden Medical CenterCastro valley, CAHospital
Highland HospitalOakland, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
West Coast Kidney175970014949
Alameda Health System3779494521533

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. Gene-yuan Chang allows following entities to bill medicare on his behalf.
Entity NameAlameda Health System
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1740332931
PECOS PAC ID: 3779494521
Enrollment ID: O20031110000764
Entity NameChabot Nephrology Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1912958422
PECOS PAC ID: 5092703454
Enrollment ID: O20040629001273
Entity NameWest Coast Kidney
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1952914681
PECOS PAC ID: 1759700149
Enrollment ID: O20201005001363

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. Gene-yuan Chang 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
Gene-yuan Chang, MD
20055 Lake Chabot Rd, 230,
Castro Valley, CA 94546-5331

Ph: (510) 881-1490
Gene-yuan Chang, MD
20055 Lake Chabot Rd, 230,
Castro Valley, CA 94546-5331

Ph: (510) 881-1490

Reviews and Comments


Internal Medicine Doctors in Castro Valley, CA

Dr. Oluwaseyi Segun Balasire, M.D.
Nephrology
Medicare: Accepting Medicare Assignments
Practice Location: 20103 Lake Chabot Rd, Castro Valley, CA 94546
Phone: 510-727-3256    Fax: 510-727-3107
Helen Woohee Yang, MD
Nephrology
Medicare: Accepting Medicare Assignments
Practice Location: 20642 John Dr, Castro Valley, CA 94546
Phone: 510-806-2100    Fax: 323-226-2657
Sarah Noonberg, MD, PHD
Nephrology
Medicare: Not Enrolled in Medicare
Practice Location: 20103 Lake Chabot Rd, Castro Valley, CA 94546
Phone: 510-889-5082    
Dr. Moyra N Rasheed, M.B.B.S
Nephrology
Medicare: May Accept Medicare Assignments
Practice Location: 20103 Lake Chabot Rd, Castro Valley, CA 94546
Phone: 510-727-3256    Fax: 510-727-3107
Vishal Ghevariya, M.D.
Nephrology
Medicare: Accepting Medicare Assignments
Practice Location: 19845 Lake Chabot Rd, Ste 104, Castro Valley, CA 94546
Phone: 510-537-4415    Fax: 510-537-8265
Omar Faisal Saleem, MD
Nephrology
Medicare: Accepting Medicare Assignments
Practice Location: 20103 Lake Chabot Rd, Castro Valley, CA 94546
Phone: 510-727-3256    Fax: 510-727-3107
Stefani Wedl, MD
Nephrology
Medicare: Accepting Medicare Assignments
Practice Location: 20103 Lake Chabot Rd, Castro Valley, CA 94546
Phone: 510-889-5082    

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).

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