Dr Mark Tony Williams, MD in Orange, CA

Dr Mark Tony Williams, MD is a medicare enrolled "Ophthalmology - Retina Specialist" physician in Orange, California. He went to University Of California, San Francisco School Of Medicine and graduated in 2017 and has 8 years of diverse experience with area of expertise as Ophthalmology. His current practice location is 1310 W Stewart Dr Ste 303, Orange, California. You can reach out to his office (for appointments etc.) via phone at (714) 738-4621.

Dr Mark Tony Williams is licensed to practice in California (license number A187615) 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 1780118802.

Contact Information

	Dr Mark Tony Williams, MD
	1310 W Stewart Dr Ste 303, Orange, CA 92868-3838
	(714) 738-4621
	(714) 409-0629

Map and Direction

Physician's Profile

Full Name	Dr Mark Tony Williams
Gender	Male
Speciality	Ophthalmology
Experience	8 Years
Location	1310 W Stewart Dr Ste 303, Orange, 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:

Dr Mark Tony Williams attended and graduated from University Of California, San Francisco School Of Medicine in 2017

NPI Data:

NPI Number: 1780118802
Provider Enumeration Date: 04/14/2017
Last Update Date: 03/11/2025

Medicare PECOS Information:

PECOS PAC ID: 0941552640
Enrollment ID: I20230803003713

Medical Identifiers

Medical identifiers for Dr Mark Tony Williams such as npi, medicare ID, medicare PIN, medicaid, etc.

Identifier	Type	State	Issuer
1780118802	NPI	-	NPPES

Medical Taxonomies and Licenses

Taxonomy	Type	License (State)	Status
207W00000X	Ophthalmology	A187615 (California)	Secondary
207WX0107X	Ophthalmology - Retina Specialist	A187615 (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 Mark Tony Williams allows following entities to bill medicare on his behalf.

Entity Name	Retina Specialists Of Orange County Inc
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1629897517 PECOS PAC ID: 0941738587 Enrollment ID: O20250110001530

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 Mark Tony Williams 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 Mark Tony Williams, MD Po Box 14107, Irvine, CA 92623-4107 Ph: (714) 738-4621	Dr Mark Tony Williams, MD 1310 W Stewart Dr Ste 303, Orange, CA 92868-3838 Ph: (714) 738-4621

Reviews and Comments

Ophthalmology Doctors in Orange, CA

Dr. Meei-ling Tung Wu, M.D. Ophthalmology Medicare: Accepting Medicare Assignments Practice Location: 991 N Tustin St, Suite 101, Orange, CA 92867 Phone: 714-639-6162 Fax: 714-639-5835
Dr. Seanna Rae Grob, MD, MAS Ophthalmology Medicare: Accepting Medicare Assignments Practice Location: 101 The City Dr S, Orange, CA 92868 Phone: 714-456-7183
Arthika Chandramohan, Ophthalmology Medicare: Accepting Medicare Assignments Practice Location: 1201 W La Veta Ave, Orange, CA 92868 Phone: 888-770-2462
Ms. Kate Chenlu Xie, Ophthalmology Medicare: Accepting Medicare Assignments Practice Location: 101 The City Dr S Ste 400, Orange, CA 92868 Phone: 714-456-6693
Babak Fardin, MD Ophthalmology Medicare: Accepting Medicare Assignments Practice Location: 101 The City Dr S, Orange, CA 92868 Phone: 714-456-8068 Fax: 714-456-3765
Dr. Laura Lucille Howard, M.D. Ophthalmology Medicare: Not Enrolled in Medicare Practice Location: 1031 W Chapman Ave Ste 204, Orange, CA 92868 Phone: 714-997-7000 Fax: 714-538-1142
David Sami, MD Ophthalmology Medicare: Not Enrolled in Medicare Practice Location: 392 S Glassell St Ste 100, Psf Ophthalmology, Orange, CA 92866 Phone: 714-289-2389 Fax: 714-289-2390

Dr Mark Tony Williams, MD - Medicare Ophthalmology in Orange, CA