William Shun Tzeng, MD in Hacienda Heights, CA

William Shun Tzeng, MD is a medicare enrolled "Internal Medicine" physician in Hacienda Heights, California. His current practice location is 17170 Colima Rd Ste G, Hacienda Heights, California. You can reach out to his office (for appointments etc.) via phone at (626) 965-8202.

William Shun Tzeng is licensed to practice in California (license number A187692) and he also participates in the medicare program. He does not accept medicare assignments directly but he may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. His NPI Number is 1649809385.

Contact Information

	William Shun Tzeng, MD
	17170 Colima Rd Ste G, Hacienda Heights, CA 91745-6771
	(626) 965-8202
	(626) 964-9893

Map and Direction

Physician's Profile

Full Name	William Shun Tzeng
Gender	Male
Speciality	Internal Medicine
Location	17170 Colima Rd Ste G, Hacienda Heights, California
Accepts Medicare Assignments	Medicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.

NPI Data:

NPI Number: 1649809385
Provider Enumeration Date: 04/04/2020
Last Update Date: 09/03/2025

Medicare PECOS Information:

PECOS PAC ID: 4183047301
Enrollment ID: I20230907002994

Medical Identifiers

Medical identifiers for William Shun Tzeng such as npi, medicare ID, medicare PIN, medicaid, etc.

Identifier	Type	State	Issuer
1649809385	NPI	-	NPPES

Medical Taxonomies and Licenses

Taxonomy	Type	License (State)	Status
207R00000X	Internal Medicine	A187692 (California)	Primary

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 Shun Tzeng allows following entities to bill medicare on his behalf.

Entity Name	Health Alliance Medical Group
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1124248570 PECOS PAC ID: 5991747883 Enrollment ID: O20050601001049

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 Shun Tzeng 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
William Shun Tzeng, MD 17170 Colima Rd Ste G, Hacienda Heights, CA 91745-6771 Ph: (626) 965-8202	William Shun Tzeng, MD 17170 Colima Rd Ste G, Hacienda Heights, CA 91745-6771 Ph: (626) 965-8202

Reviews and Comments

Internal Medicine Doctors in Hacienda Heights, CA

Mr. Anthony C. Chen, M.D. Internal Medicine Medicare: May Accept Medicare Assignments Practice Location: 1850 S Azusa Ave, Suite 102, Hacienda Heights, CA 91745 Phone: 626-912-2682 Fax: 626-912-2684
Dr. Daniel Chung Ann Choo, M.D. Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 17134 Colima Rd, Ste #e, Hacienda Heights, CA 91745 Phone: 626-820-0603 Fax: 626-820-0602
Ray Hsiao, MD Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 1850 S Azusa Ave, Suite 308, Hacienda Heights, CA 91745 Phone: 626-854-7866 Fax: 626-820-0666
Jaw-huei Chen, MD Internal Medicine Medicare: Not Enrolled in Medicare Practice Location: 1850 S Azusa Ave, Suite 205, Hacienda Heights, CA 91745 Phone: 626-964-2880 Fax: 626-964-2834
Shang Cheng Wu, M.D. Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 3141 S Hacienda Blvd, Hacienda Heights, CA 91745 Phone: 626-937-6663 Fax: 626-937-6653
David Michael Aron, MD Internal Medicine Medicare: Not Enrolled in Medicare Practice Location: 3180 Colima Rd, Suite A, Hacienda Heights, CA 91745 Phone: 626-968-0547 Fax: 626-968-7599
Christina Ching Hsiu Chen, M.D., PH.D. Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 17170 Colima Rd, Suite E, Hacienda Heights, CA 91745 Phone: 626-810-5601 Fax: 626-810-2556

William Shun Tzeng, MD - Medicare Internal Medicine in Hacienda Heights, CA