Dr Mark Tony Williams, MD in Santa Ana, CA

Dr Mark Tony Williams, MD is a medicare enrolled "Ophthalmology - Retina Specialist" physician in Santa Ana, California. He went to University Of California, San Francisco School Of Medicine and graduated in 2017 and has 7 years of diverse experience with area of expertise as Ophthalmology. He is a member of the group practice Orange County Retina Medical Group and his current practice location is 999 N Tustin Ave Ste 17, Santa Ana, California. You can reach out to his office (for appointments etc.) via phone at (714) 972-8432.

Dr Mark Tony Williams is licensed to practice in Oklahoma (license number 37829) 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
	999 N Tustin Ave Ste 17, Santa Ana, CA 92705-6504
	(714) 972-8432
	(714) 560-8402

Map and Direction

Physician's Profile

Full Name	Dr Mark Tony Williams
Gender	Male
Speciality	Ophthalmology
Experience	7 Years
Location	999 N Tustin Ave Ste 17, Santa Ana, 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: 11/06/2023

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
207WX0107X	Ophthalmology - Retina Specialist	37829 (Oklahoma)	Primary

Group Practice Association

Group Practice Name	Group PECOS PAC ID	No. of Members
Orange County Retina Medical Group	1951345883	5

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	Orange County Retina Medical Group
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1750398863 PECOS PAC ID: 1951345883 Enrollment ID: O20050613000472

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 999 N Tustin Ave Ste 17, Santa Ana, CA 92705-6504 Ph: (714) 972-8432	Dr Mark Tony Williams, MD 999 N Tustin Ave Ste 17, Santa Ana, CA 92705-6504 Ph: (714) 972-8432

Reviews and Comments

Ophthalmology Doctors in Santa Ana, CA

Dr. Kevin Mitsutoshi Gustafson, MD Ophthalmology Medicare: Accepting Medicare Assignments Practice Location: 3401 S Harbor Blvd, Santa Ana, CA 92704 Phone: 888-988-2800
David B Sacks, MD Ophthalmology Medicare: Accepting Medicare Assignments Practice Location: 999 N Tustin Ave, 122, Santa Ana, CA 92705 Phone: 714-542-3961
Dr. Richard Allen Hill, M.D. Ophthalmology Medicare: Medicare Enrolled Practice Location: 1200 N Tustin Ave, 240, Santa Ana, CA 92705 Phone: 714-542-0111 Fax: 714-542-8211
Dr. Timothy T You, M.D. Ophthalmology Medicare: Accepting Medicare Assignments Practice Location: 1200 N Tustin Ave, Ste 140, Santa Ana, CA 92705 Phone: 714-972-8235
Dr. Sanford Chen, M.D. Ophthalmology Medicare: Accepting Medicare Assignments Practice Location: 1200 N Tustin Ave, Ste 140, Santa Ana, CA 92705 Phone: 714-972-8235
Dr. Michael Bruce Lappin, MD Ophthalmology Medicare: Medicare Enrolled Practice Location: 801 N Tustin Ave, Suite 700, Santa Ana, CA 92705 Phone: 714-541-4185 Fax: 714-541-3465
Noor Amra, M.D. Ophthalmology Medicare: Accepting Medicare Assignments Practice Location: 3401 S Harbor Blvd, Santa Ana, CA 92704 Phone: 888-988-2800

Dr Mark Tony Williams, MD - Medicare Ophthalmology in Santa Ana, CA