Dr Irina Fox Brennan, MD, PHD - Medicare Emergency Medicine in Alexandria, VA

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Dr Irina Fox Brennan, MD, PHD is a medicare enrolled "Emergency Medicine" physician in Alexandria, Virginia. Her current practice location is 4320 Seminary Rd, Alexandria, Virginia. You can reach out to her office (for appointments etc.) via phone at (240) 686-2300.

Dr Irina Fox Brennan is licensed to practice in Virginia (license number 0101260407) 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 1053605584.

Contact Information

Dr Irina Fox Brennan, MD, PHD
4320 Seminary Rd,
Alexandria, VA 22304-1535
(240) 686-2300
(240) 686-2335

Map and Direction




Physician's Profile

Full NameDr Irina Fox Brennan
GenderFemale
SpecialityEmergency Medicine
Location4320 Seminary Rd, Alexandria, Virginia
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1053605584
  • Provider Enumeration Date: 06/01/2011
  • Last Update Date: 08/23/2016
  Medicare PECOS Information:
  • PECOS PAC ID: 2466686621
  • Enrollment ID: I20160804001283

Medical Identifiers

Medical identifiers for Dr Irina Fox Brennan such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1053605584NPI-NPPES
014951800MedicaidFL

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207P00000XEmergency Medicine ME117790 (Florida)Secondary
207P00000XEmergency Medicine 0101260407 (Virginia)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. Dr Irina Fox Brennan allows following entities to bill medicare on her behalf.
Entity NameInova Health Care Services
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1952320061
PECOS PAC ID: 2466351093
Enrollment ID: O20040102000644
Entity NameMid Atlantic Critical Care Services Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1164455853
PECOS PAC ID: 3274432828
Enrollment ID: O20040102000771
Entity NameEmergency Medicine Associates Pa Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1134117393
PECOS PAC ID: 8022914522
Enrollment ID: O20070919000389
Entity NameAlexandria Springfield Emergency Physicians Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1740529700
PECOS PAC ID: 1052558954
Enrollment ID: O20130514000155

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 Irina Fox Brennan 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 Irina Fox Brennan, MD, PHD
20010 Century Blvd, Suite 200,
Germantown, MD 20874-1115

Ph: (240) 686-2300		Dr Irina Fox Brennan, MD, PHD
4320 Seminary Rd,
Alexandria, VA 22304-1535

Ph: (240) 686-2300

Reviews and Comments


Emergency Medicine Doctors in Alexandria, VA

Dr. Austin Windsor Reynolds, MD
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Practice Location: 2501 Parkers Ln, Alexandria, VA 22306
Phone: 703-664-7000    
Dr. Ginny Gujral Khanna, D.O.
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Phone: 703-664-7000    
Dr. Michael David Homeyer, M.D.
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Practice Location: 2501 Parkers Ln, Department Of Emergency Medicine, Alexandria, VA 22306
Phone: 703-664-7112    
Natasha Y Powell, DO
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Practice Location: 2501 Parkers Ln, Alexandria, VA 22306
Phone: 703-664-7000    
Adam Parker Martin, MD
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Practice Location: 4320 Seminary Rd, Alexandria, VA 22304
Phone: 703-504-3000    
Dr. Reagan Herrington, M.D.
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Medicare: Medicare Enrolled
Practice Location: 4320 Seminary Rd, Alexandria, VA 22304
Phone: 703-504-3000    

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.