Mason Shieh, MD, MBA in Los Alamitos, CA - Medicare Emergency Medicine

Mason Shieh, MD, MBA is a medicare enrolled "Emergency Medicine" physician in Los Alamitos, California. He went to University Of California, Irvine, California College Of Medicine and graduated in 2012 and has 13 years of diverse experience with area of expertise as Emergency Medicine. He is a member of the group practice Cep America - California, Regents Of The University Of and his current practice location is 3751 Katella Ave, Los Alamitos, California. You can reach out to his office (for appointments etc.) via phone at (714) 456-8888.

Mason Shieh is licensed to practice in California (license number A134394) 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 1467718486.

Contact Information

	Mason Shieh, MD, MBA
	3751 Katella Ave, Los Alamitos, CA 90720-3113
	(714) 456-8888
	Not Available

Map and Direction

Physician's Profile

Full Name	Mason Shieh
Gender	Male
Speciality	Emergency Medicine
Experience	13 Years
Location	3751 Katella Ave, Los Alamitos, 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:

Mason Shieh attended and graduated from University Of California, Irvine, California College Of Medicine in 2012

NPI Data:

NPI Number: 1467718486
Provider Enumeration Date: 04/03/2012
Last Update Date: 04/02/2025

Medicare PECOS Information:

PECOS PAC ID: 5092027292
Enrollment ID: I20150630002834

Medical Identifiers

Medical identifiers for Mason Shieh such as npi, medicare ID, medicare PIN, medicaid, etc.

Identifier	Type	State	Issuer
1467718486	NPI	-	NPPES

Medical Taxonomies and Licenses

Taxonomy	Type	License (State)	Status
207P00000X	Emergency Medicine	A134394 (California)	Primary

Medical Facilities Affiliation

Facility Name	Location	Facility Type
Lakewood Regional Medical Center	Lakewood, CA	Hospital
Los Alamitos Medical Center	Los alamitos, CA	Hospital

Group Practice Association

Group Practice Name	Group PECOS PAC ID	No. of Members
Cep America - California	6103739131	1093
Regents Of The University Of	7517869605	98

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. Mason Shieh allows following entities to bill medicare on his behalf.

Entity Name	Cep America - California
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1023063542 PECOS PAC ID: 6103739131 Enrollment ID: O20031106000520

Entity Name	Regents Of The University Of
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1154379394 PECOS PAC ID: 7517869605 Enrollment ID: O20040120001119

Entity Name	Cep America - California
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1548667843 PECOS PAC ID: 6103739131 Enrollment ID: O20040121000458

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. Mason Shieh 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
Mason Shieh, MD, MBA 1115 S Sunset Ave, West Covina, CA 91790-3940 Ph: () -	Mason Shieh, MD, MBA 3751 Katella Ave, Los Alamitos, CA 90720-3113 Ph: (714) 456-8888

Reviews and Comments

Emergency Medicine Doctors in Los Alamitos, CA

Joseph Jee Jean, MD Emergency Medicine Medicare: Accepting Medicare Assignments Practice Location: 3751 Katella Ave, Los Alamitos, CA 90720 Phone: 562-598-1311
Dr. Natalie Tse-lan Shum, MD Emergency Medicine Medicare: Medicare Enrolled Practice Location: 3751 Katella Ave, Los Alamitos, CA 90720 Phone: 562-598-1311
Gihan K Wetzel, DO Emergency Medicine Medicare: Accepting Medicare Assignments Practice Location: 3751 Katella Ave, Los Alamitos, CA 90720 Phone: 714-456-8888
Dr. Michael W. Perlman, M.D. Emergency Medicine Medicare: Accepting Medicare Assignments Practice Location: 3751 Katella Ave, Los Alamitos, CA 90720 Phone: 562-598-2411
Ivan C Rokos, MD Emergency Medicine Medicare: Accepting Medicare Assignments Practice Location: 3751 Katella Ave, Los Alamitos, CA 90720 Phone: 562-598-2411
Geoffrey Paul Delaurier, M.D. Emergency Medicine Medicare: Accepting Medicare Assignments Practice Location: 3751 Katella Ave Dept Of, Los Alamitos, CA 90720 Phone: 562-598-2411
Dr. Gregory W. Moreno, MD Emergency Medicine Medicare: Accepting Medicare Assignments Practice Location: 3751 Katella Ave, Los Alamitos, CA 90720 Phone: 562-598-1311

Mason Shieh, MD, MBA - Medicare Emergency Medicine in Los Alamitos, CA