G Thomas Ruiz, MD - Medicare Obstetrics/gynecology in Fountain Valley, CA

G Thomas Ruiz, MD is a medicare enrolled "Obstetrics & Gynecology" physician in Fountain Valley, California. He went to University Of California, Irvine, California College Of Medicine and graduated in 1989 and has 35 years of diverse experience with area of expertise as Obstetrics/gynecology. He is a member of the group practice Memorialcare Medical Foundation and his current practice location is 18035 Brookhurst Street, Suite 2100, Fountain Valley, California. You can reach out to his office (for appointments etc.) via phone at (657) 241-9090.

G Thomas Ruiz is licensed to practice in California (license number G69184) 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 1518967330.

Contact Information

G Thomas Ruiz, MD
18035 Brookhurst Street, Suite 2100,
Fountain Valley, CA 92708
(657) 241-9090
Not Available

Map and Direction




Physician's Profile

Full NameG Thomas Ruiz
GenderMale
SpecialityObstetrics/gynecology
Experience35 Years
Location18035 Brookhurst Street, Fountain Valley, California
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • G Thomas Ruiz attended and graduated from University Of California, Irvine, California College Of Medicine in 1989
  NPI Data:
  • NPI Number: 1518967330
  • Provider Enumeration Date: 07/22/2005
  • Last Update Date: 10/14/2016
  Medicare PECOS Information:
  • PECOS PAC ID: 0446354690
  • Enrollment ID: I20070328000705

Medical Identifiers

Medical identifiers for G Thomas Ruiz such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1518967330NPI-NPPES
00G691840OtherCAMEDI CAL

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207V00000XObstetrics & Gynecology G69184 (California)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Memorialcare Medical Foundation8729277314384

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. G Thomas Ruiz allows following entities to bill medicare on his behalf.
Entity NameHealthcare Partners Affiliates Medical Group
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1659312593
PECOS PAC ID: 7315842002
Enrollment ID: O20031204001258
Entity NameMemorialcare Medical Foundation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1205167350
PECOS PAC ID: 8729277314
Enrollment ID: O20110113000219

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. G Thomas Ruiz 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 AddressPractice Location Address
G Thomas Ruiz, MD
17360 Brookhurst St, Attn: Credentialing Dept.,
Fountain Valley, CA 92708-3720

Ph: () -
G Thomas Ruiz, MD
18035 Brookhurst Street, Suite 2100,
Fountain Valley, CA 92708

Ph: (657) 241-9090

Reviews and Comments


Obstetrics & Gynecology Doctors in Fountain Valley, CA

Dr. Michael Jordan Vizcarra, M.D.
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Medicare: Not Enrolled in Medicare
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Phone: 714-556-0536    Fax: 714-435-9640
Dr. William I Han, M.D.
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Phone: 714-444-3030    Fax: 949-419-2515
Dr. Cynthia Arlene Cork, M.D.
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 11180 Warner Avenue, Suite 455, Fountain Valley, CA 92708
Phone: 714-556-0536    Fax: 714-435-9640
Dr. Kevin Khai Tuan Tieu, MD
Obstetrics & Gynecology
Medicare: May Accept Medicare Assignments
Practice Location: 16543 Brookhurst St, Fountain Valley, CA 92708
Phone: 714-418-9749    Fax: 714-418-1047
Dr. Jamie E Kim, M.D.
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 18111 Brookhurst St #4450, Fountain Valley, CA 92708
Phone: 714-848-2383    Fax: 714-848-4083
Eleanor Senseney Hawkins, M.D.
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 9940 Talbert Ave, Suite 303, Fountain Valley, CA 92708
Phone: 714-378-5606    Fax: 714-378-5621
Erica Dickson, DO
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 11160 Warner Ave Ste 301, Fountain Valley, CA 92708
Phone: 714-210-5665    Fax: 714-210-0231

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.