Tommy Tiong Hien Oei, MD in Fontana, CA - Medicare Internal Medicine

Tommy Tiong Hien Oei, MD is a medicare enrolled "Internal Medicine - Gastroenterology" physician in Fontana, California. He went to New York University School Of Medicine and graduated in 1997 and has 27 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice Southern California Permanente Medical Group and his current practice location is 9961 Sierra Ave, Fontana, California. You can reach out to his office (for appointments etc.) via phone at (909) 427-3910.

Tommy Tiong Hien Oei is licensed to practice in California (license number A66717) 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 1033286844.

Contact Information

	Tommy Tiong Hien Oei, MD
	9961 Sierra Ave, Fontana, CA 92335-6720
	(909) 427-3910
	Not Available

Map and Direction

Physician's Profile

Full Name	Tommy Tiong Hien Oei
Gender	Male
Speciality	Internal Medicine
Experience	27 Years
Location	9961 Sierra Ave, Fontana, 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:

Tommy Tiong Hien Oei attended and graduated from New York University School Of Medicine in 1997

NPI Data:

NPI Number: 1033286844
Provider Enumeration Date: 11/29/2006
Last Update Date: 12/01/2021

Medicare PECOS Information:

PECOS PAC ID: 9234102047
Enrollment ID: I20040818000948

Medical Identifiers

Medical identifiers for Tommy Tiong Hien Oei such as npi, medicare ID, medicare PIN, medicaid, etc.

Identifier	Type	State	Issuer
1033286844	NPI	-	NPPES

Medical Taxonomies and Licenses

Taxonomy	Type	License (State)	Status
207RG0100X	Internal Medicine - Gastroenterology	A66717 (California)	Primary

Medical Facilities Affiliation

Facility Name	Location	Facility Type
Kaiser Foundation Hospital Fontana/ontario	Fontana, CA	Hospital

Group Practice Association

Group Practice Name	Group PECOS PAC ID	No. of Members
Southern California Permanente Medical Group	6002729175	8172

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. Tommy Tiong Hien Oei allows following entities to bill medicare on his behalf.

Entity Name	Southern California Permanente Medical Group
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1316979834 PECOS PAC ID: 6002729175 Enrollment ID: O20040126000823

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. Tommy Tiong Hien Oei 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
Tommy Tiong Hien Oei, MD 9961 Sierra Ave, Fontana, CA 92335-6720 Ph: (909) 427-3910	Tommy Tiong Hien Oei, MD 9961 Sierra Ave, Fontana, CA 92335-6720 Ph: (909) 427-3910

Reviews and Comments

Internal Medicine Doctors in Fontana, CA

Nainesh K. Gandhi, MD Gastroenterology Medicare: Accepting Medicare Assignments Practice Location: 9985 Sierra Ave, Fontana, CA 92335 Phone: 866-454-3485
Blanca E. Viramontes, MD Gastroenterology Medicare: Accepting Medicare Assignments Practice Location: 9961 Sierra Ave, Fontana, CA 92335 Phone: 909-427-3910
Dr. Paymon Mesgarzadeh, M.D. Gastroenterology Medicare: Accepting Medicare Assignments Practice Location: 9985 Sierra Ave, Fontana, CA 92335 Phone: 909-427-5000
Kathryn Chang Lin, MD Gastroenterology Medicare: Not Enrolled in Medicare Practice Location: 16465 Sierra Lakes Pkwy, Ste 245, Fontana, CA 92336 Phone: 909-829-7337 Fax: 909-829-1218
Lih-jiau Chen, MD Gastroenterology Medicare: Medicare Enrolled Practice Location: 9961 Sierra Ave, Fontana, CA 92335 Phone: 909-427-3910
Edmond C. Hui, MD Gastroenterology Medicare: Accepting Medicare Assignments Practice Location: 9961 Sierra Ave, Fontana, CA 92335 Phone: 909-427-3910

Tommy Tiong Hien Oei, MD - Medicare Internal Medicine in Fontana, CA