Stephen M Day, MD - Medicare Interventional Cardiology in Alexandria, VA

Stephen M Day, MD is a medicare enrolled "Internal Medicine - Interventional Cardiology" physician in Alexandria, Virginia. He went to Medical College Of Wisconsin and graduated in 1993 and has 31 years of diverse experience with area of expertise as Interventional Cardiology. He is a member of the group practice Inova Health Care Services, Inova Health Care Services and his current practice location is 4825 Mark Center Dr Ste 150, Alexandria, Virginia. You can reach out to his office (for appointments etc.) via phone at (703) 751-8111.

Stephen M Day is licensed to practice in Virginia (license number 0101057025) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1851397467.

Contact Information

Stephen M Day, MD
4825 Mark Center Dr Ste 150,
Alexandria, VA 22311-1846
(703) 751-8111
(703) 751-1105

Map and Direction




Physician's Profile

Full NameStephen M Day
GenderMale
SpecialityInterventional Cardiology
Experience31 Years
Location4825 Mark Center Dr Ste 150, Alexandria, Virginia
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Stephen M Day attended and graduated from Medical College Of Wisconsin in 1993
  NPI Data:
  • NPI Number: 1851397467
  • Provider Enumeration Date: 06/28/2005
  • Last Update Date: 08/25/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 3577557180
  • Enrollment ID: I20040414001018

Medical Identifiers

Medical identifiers for Stephen M Day such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1851397467NPI-NPPES
1851397467MedicaidVA
029735400MedicaidDC
101700400MedicaidMD
060059673OtherDCRAILROAD MEDICARE DC#
060059673OtherVARAILROAD MEDICARE VA#

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RC0000XInternal Medicine - Cardiovascular Disease 0101057025 (Virginia)Secondary
207RI0011XInternal Medicine - Interventional Cardiology 0101057025 (Virginia)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Inova Alexandria HospitalAlexandria, VAHospital
Inova Fairfax HospitalFalls church, VAHospital
Virginia Hospital CenterArlington, VAHospital
Inova Loudoun HospitalLeesburg, VAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Inova Health Care Services24663510931778
Inova Health Care Services24663510931778

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. Stephen M Day allows following entities to bill medicare on his 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 NameThe Cardiovascular Group, Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1366498933
PECOS PAC ID: 2062305360
Enrollment ID: O20040202001017
Entity NameVirginia Hospital Center Arlington
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1790785996
PECOS PAC ID: 8820065022
Enrollment ID: O20040916000413

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. Stephen M Day 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
Stephen M Day, MD
2901 Telestar Ct., #300,
Falls Church, VA 22042-1261

Ph: (703) 591-1688
Stephen M Day, MD
4825 Mark Center Dr Ste 150,
Alexandria, VA 22311-1846

Ph: (703) 751-8111

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.