Dr Gillian Mackay, MD in La Jolla, CA - Medicare Obstetrics/gynecology

Dr Gillian Mackay, MD is a medicare enrolled "Obstetrics & Gynecology" physician in La Jolla, California. She graduated from medical school in 2001 and has 24 years of diverse experience with area of expertise as Obstetrics/gynecology. She is a member of the group practice Regents Of The University Of California and her current practice location is 8910 Villa La Jolla Dr, La Jolla, California. You can reach out to her office (for appointments etc.) via phone at (800) 926-8273.

Dr Gillian Mackay is licensed to practice in California (license number A113346) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1770702177.

Contact Information

	Dr Gillian Mackay, MD
	8910 Villa La Jolla Dr, La Jolla, CA 92037-1701
	(800) 926-8273
	(888) 539-8781

Map and Direction

Physician's Profile

Full Name	Dr Gillian Mackay
Gender	Female
Speciality	Obstetrics/gynecology
Experience	24 Years
Location	8910 Villa La Jolla Dr, La Jolla, California
Accepts Medicare Assignments	Yes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.

Medical Education and Training:

Dr Gillian Mackay graduated from medical school in 2001

NPI Data:

NPI Number: 1770702177
Provider Enumeration Date: 04/24/2007
Last Update Date: 11/13/2025

Medicare PECOS Information:

PECOS PAC ID: 9830266220
Enrollment ID: I20110622000673

Medical Identifiers

Medical identifiers for Dr Gillian Mackay such as npi, medicare ID, medicare PIN, medicaid, etc.

Identifier	Type	State	Issuer
1770702177	NPI	-	NPPES

Medical Taxonomies and Licenses

Taxonomy	Type	License (State)	Status
207V00000X	Obstetrics & Gynecology	A113346 (California)	Primary

Medical Facilities Affiliation

Facility Name	Location	Facility Type
Uc San Diego Health Hillcrest - Hillcrest Med Ctr	San diego, CA	Hospital

Group Practice Association

Group Practice Name	Group PECOS PAC ID	No. of Members
Regents Of The University Of California	3577476761	1890

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 Gillian Mackay allows following entities to bill medicare on her behalf.

Entity Name	Regents Of The University Of California
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1174626618 PECOS PAC ID: 3577476761 Enrollment ID: O20031209001111

Entity Name	Uc San Diego Health Community Group
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1659864247 PECOS PAC ID: 3971849175 Enrollment ID: O20190109000943

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 Gillian Mackay 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 Gillian Mackay, MD File 57326, Los Angeles, CA 90074-7326 Ph: () -	Dr Gillian Mackay, MD 8910 Villa La Jolla Dr, La Jolla, CA 92037-1701 Ph: (800) 926-8273

Reviews and Comments

Obstetrics & Gynecology Doctors in La Jolla, CA

Erin Andrea Gross, M.D. Obstetrics & Gynecology Medicare: Accepting Medicare Assignments Practice Location: 9350 Campus Point Dr, La Jolla, CA 92037 Phone: 800-926-8273
Dr. Douglas Andrew Woelkers, M.D. Obstetrics & Gynecology Medicare: Accepting Medicare Assignments Practice Location: 9350 Campus Point Dr, La Jolla, CA 92037 Phone: 800-926-8273
Priyanka Kadam Halani, M.D. Obstetrics & Gynecology Medicare: Accepting Medicare Assignments Practice Location: 9898 Genesee Ave, La Jolla, CA 92037 Phone: 858-824-4100
Renee Marleen Nelson, MD Obstetrics & Gynecology Medicare: Accepting Medicare Assignments Practice Location: 9850 Genesee Ave, #60, La Jolla, CA 92037 Phone: 858-453-0753 Fax: 858-642-4270
Dr. Kelly Regina Culwell, M.D., MPH Obstetrics & Gynecology Medicare: Medicare Enrolled Practice Location: 9300 Campus Point Dr, La Jolla, CA 92037 Phone: 800-926-8273 Fax: 888-539-8781
Tra V Pham, Obstetrics & Gynecology Medicare: Accepting Medicare Assignments Practice Location: 9333 Genesee Ave, La Jolla, CA 92037 Phone: 858-882-8350
Isabel Katlaps, MD Obstetrics & Gynecology Medicare: Not Enrolled in Medicare Practice Location: 9444 Medical Center Dr, La Jolla, CA 92037 Phone: 858-249-1206

Dr Gillian Mackay, MD - Medicare Obstetrics/gynecology in La Jolla, CA