Greta Eugenia Rios-steed, MD - Medicare Family Practice in Corona, CA

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Greta Eugenia Rios-steed, MD is a medicare enrolled "Family Medicine" physician in Corona, California. She graduated from medical school in 2016 and has 8 years of diverse experience with area of expertise as Family Practice. She is a member of the group practice Dr. Javier Rios, A Medical Corporation, Javier R Rios Md A Professional Corporation, Alessandro Medical Professional Corporation, Montclair Medical Professional Corporation and her current practice location is 495 E Rincon St Ste 215, Corona, California. You can reach out to her office (for appointments etc.) via phone at (855) 505-7467.

Greta Eugenia Rios-steed is licensed to practice in California (license number A166356) 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 1649708397.

Contact Information

Greta Eugenia Rios-steed, MD
495 E Rincon St Ste 215,
Corona, CA 92879-1378
(855) 505-7467
Not Available

Map and Direction




Physician's Profile

Full NameGreta Eugenia Rios-steed
GenderFemale
SpecialityFamily Practice
Experience8 Years
Location495 E Rincon St Ste 215, Corona, 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:
  • Greta Eugenia Rios-steed graduated from medical school in 2016
  NPI Data:
  • NPI Number: 1649708397
  • Provider Enumeration Date: 05/25/2017
  • Last Update Date: 02/26/2024
  Medicare PECOS Information:
  • PECOS PAC ID: 3476824871
  • Enrollment ID: I20200706000849

Medical Identifiers

Medical identifiers for Greta Eugenia Rios-steed such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1649708397NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207Q00000XFamily Medicine 19493 (Nevada)Secondary
207Q00000XFamily Medicine 61896 (Arizona)Secondary
207Q00000XFamily Medicine A166356 (California)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Dr. Javier Rios, A Medical Corporation418389250813
Javier R Rios Md A Professional Corporation529478563011
Alessandro Medical Professional Corporation569890543812
Montclair Medical Professional Corporation64061336857

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. Greta Eugenia Rios-steed allows following entities to bill medicare on her behalf.
Entity NameJavier R Rios Md A Professional Corporation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1235138363
PECOS PAC ID: 5294785630
Enrollment ID: O20050124001071
Entity NameAlessandro Medical Professional Corporation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1881941409
PECOS PAC ID: 5698905438
Enrollment ID: O20140224000841
Entity NameDr. Javier Rios, A Medical Corporation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1598291015
PECOS PAC ID: 4183892508
Enrollment ID: O20150107002576
Entity NameMontclair Medical Professional Corporation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1972955730
PECOS PAC ID: 6406133685
Enrollment ID: O20170426002238

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. Greta Eugenia Rios-steed 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
Greta Eugenia Rios-steed, MD
495 E Rincon St Ste 215,
Corona, CA 92879-1378

Ph: (855) 505-7467		Greta Eugenia Rios-steed, MD
495 E Rincon St Ste 215,
Corona, CA 92879-1378

Ph: (855) 505-7467

Reviews and Comments


Family Medicine Doctors in Corona, CA

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Kailey Nguyen,
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Mrs. Stephanie Jamie Changchien, M.D.
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Practice Location: 770 Magnolia Ave Ste 1k, Corona, CA 92879
Phone: 951-738-0303    

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.