Carl O Gray, MD in Hayward, CA - Medicare Family Medicine

Carl O Gray, MD is a medicare enrolled "Family Medicine" physician in Hayward, California. His current practice location is 22331 Mission Blvd, Hayward, California. You can reach out to his office (for appointments etc.) via phone at (510) 471-5880.

Carl O Gray is licensed to practice in California (license number A92884) 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 1326126152.

Contact Information

	Carl O Gray, MD
	22331 Mission Blvd, Hayward, CA 94541-3911
	(510) 471-5880
	Not Available

Map and Direction

Physician's Profile

Full Name	Carl O Gray
Gender	Male
Speciality	Family Medicine
Location	22331 Mission Blvd, Hayward, California
Accepts Medicare Assignments	Medicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.

NPI Data:

NPI Number: 1326126152
Provider Enumeration Date: 11/01/2006
Last Update Date: 04/27/2026

Medicare PECOS Information:

PECOS PAC ID: 9830106806
Enrollment ID: I20060315000754

Medical Identifiers

Medical identifiers for Carl O Gray such as npi, medicare ID, medicare PIN, medicaid, etc.

Identifier	Type	State	Issuer
1326126152	NPI	-	NPPES
00A928840	Medicaid	CA

Medical Taxonomies and Licenses

Taxonomy	Type	License (State)	Status
207Q00000X	Family Medicine	A92884 (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. Carl O Gray 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

Entity Name	Tiburcio Vasquez Health Center, Inc.
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1851389696 PECOS PAC ID: 6608764709 Enrollment ID: O20040309001428

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. Carl O Gray 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
Carl O Gray, MD 22331 Mission Blvd, Hayward, CA 94541-3911 Ph: (510) 471-5880	Carl O Gray, MD 22331 Mission Blvd, Hayward, CA 94541-3911 Ph: (510) 471-5880

Reviews and Comments

Family Medicine Doctors in Hayward, CA

Dr. Joseph William Ippolito, M.D. Family Medicine Medicare: Not Enrolled in Medicare Practice Location: 1605 Whipple Rd, Hayward, CA 94544 Phone: 510-378-3131 Fax: 510-324-0301
Abayomi S Jones, M.D. Family Medicine Medicare: Medicare Enrolled Practice Location: 25800 Carlos Bee Blvd, Hayward, CA 94542 Phone: 520-222-9664 Fax: 202-269-7990
Mr. Harshad Bhagwanjee Wadhar, MD Family Medicine Medicare: Accepting Medicare Assignments Practice Location: 226 Benmore Dr, Hayward, CA 94542 Phone: 412-779-6048
Jagveer Kaur, Family Medicine Medicare: Accepting Medicare Assignments Practice Location: 22331 Mission Blvd, Hayward, CA 94541 Phone: 510-471-5880
Russell Leslie Blackburn, MD Family Medicine Medicare: Medicare Enrolled Practice Location: 21297 Foothill Blvd, Suite 201, Hayward, CA 94541 Phone: 510-538-4636 Fax: 510-538-1615
Jade Bito-onon, D.O. Family Medicine Medicare: Accepting Medicare Assignments Practice Location: 27206 Calaroga Ave Ste 105, Hayward, CA 94545 Phone: 510-785-5000
Arkady Michailovich Massen, M.D. Family Medicine Medicare: Medicare Enrolled Practice Location: 19682 Hesperian Blvd Ste 101a, 1393 Santa Rita Rd. #a, Hayward, CA 94541 Phone: 510-783-0536 Fax: 510-315-1103

Carl O Gray, MD - Medicare Family Medicine in Hayward, CA