Dr Mason Lang, OD in Union City, CA - Medicare Optometrist Provider

Dr Mason Lang, OD is a medicare enrolled "Optometrist" provider in Union City, California. His current practice location is 30600 Dyer St, Union City, California. You can reach out to his office (for appointments etc.) via phone at (510) 431-3142.

Dr Mason Lang is licensed to practice in California (license number 34493) 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 1407337439.

Contact Information

	Dr Mason Lang, OD
	30600 Dyer St, Union City, CA 94587-1717
	(510) 431-3142
	Not Available

Map and Direction

Healthcare Provider's Profile

Full Name	Dr Mason Lang
Gender	Male
Speciality	Optometrist
Location	30600 Dyer St, Union City, California
Accepts Medicare Assignments	Medicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.

NPI Data:

NPI Number: 1407337439
Provider Enumeration Date: 08/27/2018
Last Update Date: 07/12/2025

Medicare PECOS Information:

PECOS PAC ID: 0042745572
Enrollment ID: I20241121000217

Medical Identifiers

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

Identifier	Type	State	Issuer
1407337439	NPI	-	NPPES

Medical Taxonomies and Licenses

Taxonomy	Type	License (State)	Status
152W00000X	Optometrist	008867 (New York)	Secondary
152W00000X	Optometrist	34493 (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. Dr Mason Lang allows following entities to bill medicare on his behalf.

Provider Name	Dr Mason Lang Od Inc
Provider Type	Part B Supplier - Clinic/group Practice
Provider Identifiers	NPI Number: 1689333502 PECOS PAC ID: 9133654668 Enrollment ID: O20241121000172

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. Dr Mason Lang 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
Dr Mason Lang, OD 500 Pawnee Pl, Fremont, CA 94539-3306 Ph: (510) 456-5848	Dr Mason Lang, OD 30600 Dyer St, Union City, CA 94587-1717 Ph: (510) 431-3142

Reviews and Comments

Optometrist in Union City, CA

Gary M Louie, OD Optometrist Medicare: Accepting Medicare Assignments Practice Location: 34724 Alvarado Niles Rd, Union City, CA 94587 Phone: 510-489-5510 Fax: 510-489-5658
Nedda Shakib Misherghi, O.D. Optometrist Medicare: Medicare Enrolled Practice Location: 3553 Whipple Rd, Union City, CA 94587 Phone: 510-454-1000
Dr. Olivia Adriana Cepeda, OD Optometrist Medicare: Medicare Enrolled Practice Location: 33444 Alvarado Niles Rd, Union City, CA 94587 Phone: 510-487-1335
Saul Cepeda, OD Optometrist Medicare: Accepting Medicare Assignments Practice Location: 34640 Alvarado Niles Rd, Union City, CA 94587 Phone: 510-487-1335
Connie Choi, O.D. Optometrist Medicare: Medicare Enrolled Practice Location: 30600 Dyer St, Union City, CA 94587 Phone: 510-441-7403
Gary M. Louie O.d. Inc. Optometrist Medicare: Not Enrolled in Medicare Practice Location: 34724 Alvarado Niles Rd, Union City, CA 94587 Phone: 510-489-5510 Fax: 510-489-5658
Xinqing Lai, Optometrist Medicare: Not Enrolled in Medicare Practice Location: 4325 Queen Anne Dr, Union City, CA 94587 Phone: 512-886-4898

Dr Mason Lang, OD - Medicare Optometrist in Union City, CA