William G Ong, MD in Livermore, CA

William G Ong, MD is a medicare enrolled "Pediatrics" physician in Livermore, California. His current practice location is 3000 Las Positas Rd, Livermore, California. You can reach out to his office (for appointments etc.) via phone at (925) 243-2600.

William G Ong is licensed to practice in California (license number A82738) 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 1508944604.

Contact Information

	William G Ong, MD
	3000 Las Positas Rd, Livermore, CA 94551-9627
	(925) 243-2600
	Not Available

Map and Direction

Physician's Profile

Full Name	William G Ong
Gender	Male
Speciality	Pediatrics
Location	3000 Las Positas Rd, Livermore, California
Accepts Medicare Assignments	Medicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.

NPI Data:

NPI Number: 1508944604
Provider Enumeration Date: 11/02/2006
Last Update Date: 12/13/2021

Medicare PECOS Information:

PECOS PAC ID: 1153382536
Enrollment ID: I20041019001275

Medical Identifiers

Medical identifiers for William G Ong such as npi, medicare ID, medicare PIN, medicaid, etc.

Identifier	Type	State	Issuer
1508944604	NPI	-	NPPES
00A827380	Medicaid	CA

Medical Taxonomies and Licenses

Taxonomy	Type	License (State)	Status
208000000X	Pediatrics	A82738 (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 G Ong allows following entities to bill medicare on his behalf.

Entity Name	Permanente Medical Group Inc
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1073606299 PECOS PAC ID: 8921910225 Enrollment ID: O20031104000710

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 G Ong 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 G Ong, MD 1800 Harrison St Fl 7, Oakland, CA 94612-3466 Ph: (510) 625-6262	William G Ong, MD 3000 Las Positas Rd, Livermore, CA 94551-9627 Ph: (925) 243-2600

Reviews and Comments

Pediatrics Doctors in Livermore, CA

Yineth Rocio Smith, MD Pediatrics Medicare: Medicare Enrolled Practice Location: 1133 E Stanley Blvd, #103, Livermore, CA 94550 Phone: 925-455-5050 Fax: 925-455-5084
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Bruce M Gach, MD Pediatrics Medicare: Not Enrolled in Medicare Practice Location: 1133 E Stanley Blvd, #103, Livermore, CA 94550 Phone: 925-455-5050 Fax: 925-455-5084
Mrs. Rakhi Mehrotra, MD Pediatrics Medicare: Medicare Enrolled Practice Location: 7683 Southfront Rd, Livermore, CA 94551 Phone: 800-478-8837
Dr. Raquel Natalia Nieves, MD Pediatrics Medicare: Medicare Enrolled Practice Location: 1133 E Stanley Blvd Ste 103, Livermore, CA 94550 Phone: 925-455-5050 Fax: 925-455-5084
Johnette K Leikam, MD Pediatrics Medicare: Not Enrolled in Medicare Practice Location: 1133 E Stanley Blvd, #103, Livermore, CA 94550 Phone: 925-455-5050 Fax: 925-667-2122
Sharon Krejci Mowat, MD Pediatrics Medicare: Medicare Enrolled Practice Location: 3000 Las Positas Rd, Livermore, CA 94551 Phone: 925-243-2600

William G Ong, MD - Medicare Pediatrics in Livermore, CA