Individual Healthcare Provider
Michael Casey Flanagan, M.D.
Provider's NPPES record last updated: October 25, 2021
Overview
- Entity Type
- Individual Healthcare Provider
- NPI
- 1275516320
- Primary Specialty
- Internal Medicine — Advanced Heart Failure and Transplant Cardiology
- Practice Location
- Falls Church, Virginia
- Sole Proprietor
- No
Federal Screening
NPISignal checked this NPI against federal exclusion sources. Results below are based on the NPI number itself — an identifier match, not a name match.
List of Excluded Individuals/Entities (LEIE)
HHS Office of Inspector General
No potential match was identified in NPISignal's indexed List of Excluded Individuals/Entities (LEIE) records as of 2026-09-10.
- Source data
- September 10, 2026
- Records indexed
- 84,001
- Screened
- Sep 18, 2026, 4:21 AM UTC
This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.
SAM.gov Exclusions
U.S. General Services Administration
SAM.gov Exclusions was not checked.
SAM.gov screening is not configured on this deployment. No SAM check has been performed.
- Screened
- Not checked
This is an NPI-based check only. NPISignal does not publish name-based exclusion matches on a provider profile. A shared or similar name is a lead that requires human review, not an identification, and this page is not the place to make one. Run a name-based screening below to see potential matches with the reasons for each.
This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.
Searches OIG LEIE and SAM.gov by name and reviews every potential match.
Specialties & Taxonomies
- Primary
Internal Medicine
Advanced Heart Failure and Transplant Cardiology
Allopathic & Osteopathic Physicians
Specialists in Advanced Heart Failure and Transplant Cardiology would participate in the inpatient and outpatient management of patients with advanced heart failure across the spectrum from consideration for high-risk cardiac surgery, cardiac transplantation, or mechanical circulatory support, to pre-and post-operative evaluation and management of patients with cardiac transplants and mechanical support devices, and end-of-life care for patients with end-stage heart failure.
Taxonomy code 207RA0001X Internal Medicine
Allopathic & Osteopathic Physicians
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Taxonomy code 207R00000XInternal Medicine
Cardiovascular Disease
Allopathic & Osteopathic Physicians
An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.
Taxonomy code 207RC0000X
Provider-Reported License Information
- Internal Medicine (Virginia)
- 0101238627
- Internal Medicine (Virginia)
- 0101238627
- Internal Medicine (Virginia)
- 0101238627
Practice Locations
Practice Location
3300 Gallows Rd
Falls Church, Virginia 22042-3300
Phone: (703) 776-4001
Additional Practice Location
8901 Wisconsin Ave Cardiology Department
Bethesda, Maryland 20889-5600
Phone: (301) 295-0390
Additional Practice Location
21785 Filigree Ct Ste 203
Ashburn, Virginia 20147-6214
Phone: (703) 933-2820
Fax: (571) 665-6820
Additional Practice Location
8081 Innovation Park Dr Ste 700
Fairfax, Virginia 22031-4867
Phone: (571) 472-2900
Fax: (571) 742-2901
Additional Practice Location
1600 N Beauregard St Ste 150
Alexandria, Virginia 22311-1732
Phone: (703) 776-6453
Fax: (703) 776-2797
Additional Practice Location
2501 Parkers Ln
Alexandria, Virginia 22306-3209
Phone: (703) 664-7000
Fax: (703) 664-7666
Additional Practice Location
1005 N Glebe Rd Ste 750
Arlington, Virginia 22201-5766
Phone: (703) 524-7202
Fax: (703) 516-4501
Additional Practice Location
2901 Telestar Ct Ste 200
Falls Church, Virginia 22042-1262
Phone: (703) 573-3494
Fax: (703) 573-5353
Record Information
- Enumeration Date
- November 22, 2005
- Provider's NPPES Record Last Updated
- October 25, 2021
- Certification Date
- October 25, 2021
- NPISignal NPPES Dataset
- August 2026
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