Dr Marena Patronas, MD - Medicare Ophthalmology in Warrenton, VA

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Dr Marena Patronas, MD is a medicare enrolled "Ophthalmology" physician in Warrenton, Virginia. She went to Georgetown University School Of Medicine and graduated in 2003 and has 22 years of diverse experience with area of expertise as Ophthalmology. She is a member of the group practice Loudoun Medical Group, Pc, Virginia Retina Center Llc, Dulles Eye Associates, P.c., Loudoun Medical Group, Pc, Dressler Ophthalmology Assoc Plc, Medical Faculty Associates, Inc, Dulles Eye Associates, P.c. and her current practice location is 45 N Hill Dr Ste 202, Warrenton, Virginia. You can reach out to her office (for appointments etc.) via phone at (540) 349-1882.

Dr Marena Patronas is licensed to practice in Virginia (license number 0101252487) 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 1992928352.

Contact Information

Dr Marena Patronas, MD
45 N Hill Dr Ste 202,
Warrenton, VA 20186-2677
(540) 349-1882
(703) 738-7157

Map and Direction




Physician's Profile

Full NameDr Marena Patronas
GenderFemale
SpecialityOphthalmology
Experience22 Years
Location45 N Hill Dr Ste 202, Warrenton, Virginia
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:
  • Dr Marena Patronas attended and graduated from Georgetown University School Of Medicine in 2003
  NPI Data:
  • NPI Number: 1992928352
  • Provider Enumeration Date: 04/11/2007
  • Last Update Date: 06/30/2025
  Medicare PECOS Information:
  • PECOS PAC ID: 9537250691
  • Enrollment ID: I20150604002910

Medical Identifiers

Medical identifiers for Dr Marena Patronas such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1992928352NPI-NPPES
30015807600001MedicaidVA
1992928352MedicaidVA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207W00000XOphthalmology 0101252487 (Virginia)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Loudoun Medical Group, Pc0042119661298
Virginia Retina Center Llc93351068145
Dulles Eye Associates, P.c.963806715020
Loudoun Medical Group, Pc0042119661298
Dressler Ophthalmology Assoc Plc03451435175
Medical Faculty Associates, Inc4082528898596
Dulles Eye Associates, P.c.963806715020

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 Marena Patronas allows following entities to bill medicare on her behalf.
Entity NameLoudoun Medical Group, Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1679591440
PECOS PAC ID: 0042119661
Enrollment ID: O20041115000474
Entity NameVirginia Retina Center Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1093869976
PECOS PAC ID: 9335106814
Enrollment ID: O20041216000232
Entity NameDulles Eye Associates
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1144289661
PECOS PAC ID: 9638067150
Enrollment ID: O20050203000238

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 Marena Patronas 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
Dr Marena Patronas, MD
45 N Hill Dr Ste 202,
Warrenton, VA 20186-2677

Ph: (540) 349-1882		Dr Marena Patronas, MD
45 N Hill Dr Ste 202,
Warrenton, VA 20186-2677

Ph: (540) 349-1882

Reviews and Comments


Ophthalmology Doctors in Warrenton, VA

Dr. Sam Edward Mansour, MD
Ophthalmology
Medicare: Accepting Medicare Assignments
Practice Location: 45 N Hill Dr Ste 202, Warrenton, VA 20186
Phone: 540-349-1882    Fax: 703-738-7157
Alessa Sook Crossan, M.D.
Ophthalmology
Medicare: Accepting Medicare Assignments
Practice Location: 45 N Hill Dr Ste 202, Warrenton, VA 20186
Phone: 540-349-1882    
Dr. Malkit Kaur Singh, MD MPA
Ophthalmology
Medicare: Accepting Medicare Assignments
Practice Location: 45 N Hill Dr Ste 202, Warrenton, VA 20186
Phone: 540-349-1882    Fax: 703-738-7157
Alexandre F Gauthier, M.D
Ophthalmology
Medicare: Accepting Medicare Assignments
Practice Location: 45 N Hill Dr Ste 202, Warrenton, VA 20186
Phone: 540-349-1882    Fax: 703-738-7157

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.