Gene-yuan Chang, MD 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 17 years of diverse experience with area of expertise as Nephrology. He is a member of the group practice West Coast Kidney and his current practice location is 19850 Lake Chabot Rd, 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
	19850 Lake Chabot Rd, Castro Valley, CA 94546-4002
	(510) 881-1490
	Not Available

Map and Direction

Physician's Profile

Full Name	Gene-yuan Chang
Gender	Male
Speciality	Nephrology
Experience	17 Years
Location	19850 Lake Chabot Rd, Castro Valley, California
Accepts Medicare Assignments	Yes. 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: 04/25/2025

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.

Identifier	Type	State	Issuer
1467731828	NPI	-	NPPES

Medical Taxonomies and Licenses

Taxonomy	Type	License (State)	Status
207RN0300X	Internal Medicine - Nephrology	121677 (California)	Primary

Medical Facilities Affiliation

Facility Name	Location	Facility Type
Hayward Dialysis Center	Hayward, CA	Dialysis facility
San Leandro Dialysis	San leandro, CA	Dialysis facility
Eden Medical Center	Castro valley, CA	Hospital
Highland Hospital	Oakland, CA	Hospital
Stanford Health Care - Valleycare	Pleasanton, CA	Hospital
Alta Bates Summit Medical Center	Oakland, CA	Hospital

Group Practice Association

Group Practice Name	Group PECOS PAC ID	No. of Members
West Coast Kidney	1759700149	51

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 Name	Alameda Health System
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1740332931 PECOS PAC ID: 3779494521 Enrollment ID: O20031110000764

Entity Name	West Coast Kidney
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI 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 Address	Practice Location Address
Gene-yuan Chang, MD 19850 Lake Chabot Rd, Castro Valley, CA 94546-4002 Ph: (510) 881-1490	Gene-yuan Chang, MD 19850 Lake Chabot Rd, Castro Valley, CA 94546-4002 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: Accepting 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

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