Sang Hoon Ahn, MD in Fullerton, CA - Medicare Hematology/oncology

Sang Hoon Ahn, MD is a medicare enrolled "Internal Medicine" physician in Fullerton, California. He graduated from medical school in 1994 and has 32 years of diverse experience with area of expertise as Hematology/oncology. He is a member of the group practice Usc Care Medical Group Inc and his current practice location is 1950 Sunny Crest Dr Ste 2800, Fullerton, California. You can reach out to his office (for appointments etc.) via phone at (657) 888-9919.

Sang Hoon Ahn is licensed to practice in California (license number A95562) 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 1568581759.

Contact Information

	Sang Hoon Ahn, MD
	1950 Sunny Crest Dr Ste 2800, Fullerton, CA 92835-3641
	(657) 888-9919
	(657) 888-9941

Map and Direction

Physician's Profile

Full Name	Sang Hoon Ahn
Gender	Male
Speciality	Hematology/oncology
Experience	32 Years
Location	1950 Sunny Crest Dr Ste 2800, Fullerton, 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:

Sang Hoon Ahn graduated from medical school in 1994

NPI Data:

NPI Number: 1568581759
Provider Enumeration Date: 03/28/2007
Last Update Date: 02/18/2026

Medicare PECOS Information:

PECOS PAC ID: 9931207818
Enrollment ID: I20080917000657

Medical Identifiers

Medical identifiers for Sang Hoon Ahn such as npi, medicare ID, medicare PIN, medicaid, etc.

Identifier	Type	State	Issuer
1568581759	NPI	-	NPPES
00A955620	Medicaid	CA

Medical Taxonomies and Licenses

Taxonomy	Type	License (State)	Status
207R00000X	Internal Medicine	A95562 (California)	Primary
207RX0202X	Internal Medicine - Medical Oncology	A95562 (California)	Secondary

Medical Facilities Affiliation

Facility Name	Location	Facility Type
Keck Hospital Of Usc	Los angeles, CA	Hospital

Group Practice Association

Group Practice Name	Group PECOS PAC ID	No. of Members
Usc Care Medical Group Inc	0446157747	1215

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. Sang Hoon Ahn allows following entities to bill medicare on his behalf.

Entity Name	Usc Care Medical Group Inc
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1902846306 PECOS PAC ID: 0446157747 Enrollment ID: O20050512000412

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. Sang Hoon Ahn 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
Sang Hoon Ahn, MD 1520 Hollydale Dr, Fullerton, CA 92831-1115 Ph: (213) 245-0788	Sang Hoon Ahn, MD 1950 Sunny Crest Dr Ste 2800, Fullerton, CA 92835-3641 Ph: (657) 888-9919

Reviews and Comments

Internal Medicine Doctors in Fullerton, CA

Kiho Woo, M.D. Internal Medicine Medicare: Medicare Enrolled Practice Location: 101 E. Valencia Dr., Fullerton, CA 92835 Phone: 714-449-4800 Fax: 714-578-8629
Kumkum Sarkar Patel, M.D., MPH Internal Medicine Medicare: Not Enrolled in Medicare Practice Location: 1837 Sunny Crest Dr, Fullerton, CA 92835 Phone: 714-446-5831
Pius J. Kim, M.D. Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 101 E Valencia Mesa Dr, Fullerton, CA 92835 Phone: 714-447-5027
Steven Woong Kim, MD Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 2151 N Harbor Blvd Ste 3200, Fullerton, CA 92835 Phone: 714-446-5900 Fax: 714-446-5800
Yung Lyou, M.D., PH.D. Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 2151 N Harbor Blvd Ste 3200, Fullerton, CA 92835 Phone: 714-446-5900
Andrew Tien Duke, M.D. Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 100 E Valencia Mesa Dr, Fullerton, CA 92835 Phone: 714-992-3969
Eugene Boston, Internal Medicine Medicare: Not Enrolled in Medicare Practice Location: 2720 N Harbor Blvd, Suite 100, Fullerton, CA 92835 Phone: 714-449-6990

Sang Hoon Ahn, MD - Medicare Hematology/oncology in Fullerton, CA