Maria Isabel Bacay, MD - Medicare Internal Medicine in Manteca, CA

Maria Isabel Bacay, MD is a medicare enrolled "Internal Medicine" physician in Manteca, California. She graduated from medical school in 1985 and has 39 years of diverse experience with area of expertise as Internal Medicine. She is a member of the group practice Bacay Aruiza Medical Associates Inc and her current practice location is 1140 Norman Dr, Suite 103, Manteca, California. You can reach out to her office (for appointments etc.) via phone at (209) 825-6331.

Maria Isabel Bacay is licensed to practice in California (license number A51759) 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 1679599070.

Contact Information

Maria Isabel Bacay, MD
1140 Norman Dr, Suite 103,
Manteca, CA 95336-5900
(209) 825-6331
(209) 825-6351

Map and Direction




Physician's Profile

Full NameMaria Isabel Bacay
GenderFemale
SpecialityInternal Medicine
Experience39 Years
Location1140 Norman Dr, Manteca, California
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Maria Isabel Bacay graduated from medical school in 1985
  NPI Data:
  • NPI Number: 1679599070
  • Provider Enumeration Date: 07/15/2006
  • Last Update Date: 01/02/2008
  Medicare PECOS Information:
  • PECOS PAC ID: 6406878065
  • Enrollment ID: I20081008000248

Medical Identifiers

Medical identifiers for Maria Isabel Bacay such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1679599070NPI-NPPES
GR0099130MedicaidCA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine A51759 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Doctors Hospital Of MantecaManteca, CAHospital
Stanford Health Care - ValleycarePleasanton, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Bacay Aruiza Medical Associates Inc66088982673

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. Maria Isabel Bacay allows following entities to bill medicare on her behalf.
Entity NameBacay Aruiza Medical Associates Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1760459416
PECOS PAC ID: 6608898267
Enrollment ID: O20051222000551

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. Maria Isabel Bacay 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
Maria Isabel Bacay, MD
1140 Norman Dr, Suite 103,
Manteca, CA 95336-5900

Ph: (209) 825-6331
Maria Isabel Bacay, MD
1140 Norman Dr, Suite 103,
Manteca, CA 95336-5900

Ph: (209) 825-6331

Reviews and Comments


Internal Medicine Doctors in Manteca, CA

Dr. Puneet Dhillon Grewal, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1148 Norman Dr Ste 3, Manteca, CA 95336
Phone: 209-944-5750    Fax: 206-464-2684
Vinisha Noti,
Internal Medicine
Medicare: Medicare Enrolled
Practice Location: 1777 W Yosemite Ave, Manteca, CA 95337
Phone: 209-825-3700    
Karen A. Reardon, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1079 Eucalyptus Street, Ste A, Manteca, CA 95337
Phone: 209-284-4561    Fax: 209-284-4562
Dr. Abdul Waheed Khan, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1144 Norman Dr, Suite 205, Manteca, CA 95336
Phone: 209-824-1230    Fax: 209-823-2806
Dr. Glenmore Lasam, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1148 Norman Dr Ste 3, Manteca, CA 95336
Phone: 209-824-1555    Fax: 209-464-2684
Lisa Michelle Gitthens Moses, RRT
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 1721 W Yosemite Ave, Manteca, CA 95337
Phone: 209-824-5086    
Eh Raymond Mu, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1721 W Yosemite Ave, Manteca, CA 95337
Phone: 209-476-2000    

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.