Stela Georgieva Kostova-abadjieva, MD - Medicare Internal Medicine in Tustin, CA

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Stela Georgieva Kostova-abadjieva, MD is a medicare enrolled "Internal Medicine" physician in Tustin, California. Her current practice location is 661 W 1st St Ste G, Tustin, California. You can reach out to her office (for appointments etc.) via phone at (714) 665-9890.

Stela Georgieva Kostova-abadjieva is licensed to practice in California (license number A121900) and she also participates in the medicare program. She does not accept medicare assignments directly but she may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. Her NPI Number is 1164791265.

Contact Information

Stela Georgieva Kostova-abadjieva, MD
661 W 1st St Ste G,
Tustin, CA 92780-2939
(714) 665-9890
(714) 665-9891

Map and Direction




Physician's Profile

Full NameStela Georgieva Kostova-abadjieva
GenderFemale
SpecialityInternal Medicine
Location661 W 1st St Ste G, Tustin, California
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1164791265
  • Provider Enumeration Date: 12/19/2011
  • Last Update Date: 01/10/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 9739331588
  • Enrollment ID: I20121130000561

Medical Identifiers

Medical identifiers for Stela Georgieva Kostova-abadjieva such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1164791265NPI-NPPES
A121900OtherCACA STATE LICENSE

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine A121900 (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. Stela Georgieva Kostova-abadjieva allows following entities to bill medicare on her behalf.
Entity NamePioneer Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1548303589
PECOS PAC ID: 1759317696
Enrollment ID: O20050712001246
Entity NameFamilies Together Of Orange County
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1194122457
PECOS PAC ID: 7517268816
Enrollment ID: O20151210000638

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. Stela Georgieva Kostova-abadjieva 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
Stela Georgieva Kostova-abadjieva, MD
4310 Orange St,
Riverside, CA 92501-3829

Ph: (951) 781-6335		Stela Georgieva Kostova-abadjieva, MD
661 W 1st St Ste G,
Tustin, CA 92780-2939

Ph: (714) 665-9890

Reviews and Comments


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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.