Individual provider Active NPI

Michael Casey Flanagan, M.D.

  • Advanced Heart Failure and Transplant Cardiology Physician
  • Falls Church, VA
National Provider Identifier
1275516320
Registry record updated Oct 25, 2021
On this page

Key facts

NPPES NPI Registry
Primary specialty
Advanced Heart Failure and Transplant Cardiology PhysicianTaxonomy code 207RA0001X
License
0101238627 Issued in VA
Practice address
3300 Gallows Rd
Falls Church, VA 22042-3300
Phone
(703) 776-4001
Fax
(703) 776-7113
NPI assigned
Nov 22, 2005
Last updated
Oct 25, 2021By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Oct 25, 2021

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X 0101238627 VA
Cardiovascular Disease Physician 207RC0000X 0101238627 VA
Advanced Heart Failure and Transplant Cardiology Physician 207RA0001X 0101238627 VA Primary

Addresses

Primary practice location

3300 Gallows Rd
Falls Church, VA 22042-3300

Mailing address

PO Box 37174
Baltimore, MD 21297-3174
Phone (571) 423-5699

Other practice location 1

8901 Wisconsin Ave Cardiology Department
Bethesda, MD 20889-5600
Phone (301) 295-0390

Other practice location 2

21785 Filigree Ct Ste 203
Ashburn, VA 20147-6214
Phone (703) 933-2820

Other practice location 3

8081 Innovation Park Dr Ste 700
Fairfax, VA 22031-4867
Phone (571) 472-2900

Other practice location 4

1600 N Beauregard St Ste 150
Alexandria, VA 22311-1732
Phone (703) 776-6453

Other practice location 5

2501 Parkers Ln
Alexandria, VA 22306-3209
Phone (703) 664-7000

Other practice location 6

1005 N Glebe Rd Ste 750
Arlington, VA 22201-5766
Phone (703) 524-7202

Other practice location 7

2901 Telestar Ct Ste 200
Falls Church, VA 22042-1262
Phone (703) 573-3494

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address mflanagan168071@soc.inova.org Health Information Exchange (HIE) Inova Health Care Services

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in DC, VA, MD3 enrollments
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: Yes
  • Power mobility devices: Yes
  • Hospice: Yes
Green means eligible to order or refer.

Enrollment records 3

Enrollment IDStateProvider typePAC IDDetails
I20140710001561 DC Practitioner - Advanced Heart Failure and Transplant CardiologyPractitioner - Cardiovascular Disease (Cardiology)Practitioner - Internal Medicine 8820213671 Reassigns benefits to 3 organizations
I20150709002382 VA Practitioner - Advanced Heart Failure and Transplant CardiologyPractitioner - Cardiovascular Disease (Cardiology)Practitioner - Internal Medicine 8820213671 Reassigns benefits to 2 organizations
I20190624001492 MD Practitioner - Cardiovascular Disease (Cardiology)Practitioner - Internal Medicine 8820213671 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Advanced Heart Failure and Transplant CardiologyAlso: Internal Medicine
Education
Temple University School of Medicine, 2004
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Mary Washington Hospital IncGroup PAC ID 0446143820, 53 clinicians
Inova Health Care ServicesGroup PAC ID 2466351093, 1,821 clinicians

Practice addresses (Care Compare)

1201 B Sam Perry Blvd
Suite 280
Fredericksburg, VA 22401-8457
Phone (540) 741-5502

13575 Heathcote Blvd
Suite 210
Gainesville, VA 20155-6698
Phone (571) 248-4620

21785 Filigree CT
Ashburn, VA 20147-6214

224 A Cornwall St NW
Suite 3.024
Leesburg, VA 20176-2701
Phone (703) 771-2837

224 B Cornwall NWST
Leesburg, VA 20176-2701

224 Cornwall St NW
Leesburg, VA 20176-2701
Phone (703) 771-2894

3300 Gallows Rd
Falls Church, VA 22042-3307
Phone (703) 698-2740

44035 Riverside Pkwy
Leesburg, VA 20176-8260

44045 Rivderside Pkwy
Leesburg, VA 20176-5101

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
83.36 of 100Reported as group
Quality
73.03
Promoting interoperability
100
Improvement activities
40
Cost
71.49

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
D76595MDMDSurgery Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Mary Washington Hospital, Inc. Cardiovascular Disease Current Accepting new patients
Medstar Medical Group II LLC CurrentSince Jul 29, 2019 Accepting new patients
Cardiac Associates, P.C. Cardiovascular Disease CurrentSince Jun 1, 2014 Accepting new patients
Adventist Physician Services, Inc. CurrentSince Sep 1, 2014 Accepting new patients
Medstar Medical Group II LLC Internal Medicine CurrentSince Jul 29, 2019 Accepting new patients
Medstar Heart Institute LLC Cardiovascular Disease CurrentSince Mar 1, 2024 Accepting new patients
Inova Health Care Services CurrentSince Jun 15, 2015 Accepting new patients
Mary Washington Hospital Inc. CurrentSince Oct 10, 2025 Accepting new patients
Inova Health Care Services Internal Medicine CurrentSince Jun 15, 2015 Accepting new patients

Locations

3333 N Calvert St
Baltimore, MD 21218
Phone (410) 235-5405

3333 N Calvert St
Ste 500
Baltimore, MD 21218
Phone (410) 366-5600

5601 Loch Raven Blvd
Baltimore, MD 21239
Phone (443) 444-4714

5601 Loch Raven Blvd
Ste 206
Baltimore, MD 21239
Phone (410) 464-5600

820 W Diamond Ave
Ste 500
Gaithersburg, MD 20878

1406 Crain Hwy S
Glen Burnie, MD 21061
Phone (410) 768-6440

15225 Shady Grove Rd
Ste 201
Rockville, MD 20850
Phone (301) 670-3000

9901 Medical Center Dr
Rockville, MD 20850
Phone (301) 279-6000

1600 N Beauregard St
Ste 150
Alexandria, VA 22311
Phone (571) 472-0080

2501 Parkers Ln
Alexandria, VA 22306
Phone (703) 664-7000

1005 N Glebe Rd
Ste 750
Arlington, VA 22201
Phone (703) 524-7202

21785 Filigree Ct
Ste 203
Ashburn, VA 20147
Phone (703) 554-1100

8081 Innovation Park Dr
Ste 700
Fairfax, VA 22031
Phone (571) 472-2900

2901 Telestar Ct
Ste 200
Falls Church, VA 22042
Phone (703) 573-3494

3300 Gallows Rd
Falls Church, VA 22042
Phone (703) 352-9395

1001 Sam Perry Blvd
Fredericksburg, VA 22401
Phone (540) 741-1100

1201 Sam Perry Blvd
Ste 280
Fredericksburg, VA 22401
Phone (540) 361-2922

224B Cornwall St NW
Leesburg, VA 20176
Phone (703) 771-2894

Interoperability endpoints

  • Direct secure messaging: mflanagan168071@soc.inova.org

Organizations & group practices 9

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

Hospital & facility affiliations 8

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1132617600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1635120000000",
    "number": "1275516320",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 37174",
            "city": "BALTIMORE",
            "state": "MD",
            "postal_code": "212973174",
            "telephone_number": "571-423-5699",
            "fax_number": "571-423-5698"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3300 GALLOWS RD",
            "city": "FALLS CHURCH",
            "state": "VA",
            "postal_code": "220423300",
            "telephone_number": "703-776-4001",
            "fax_number": "703-776-7113"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "8901 Wisconsin Ave Cardiology Department",
            "address_purpose": "LOCATION",
            "city": "Bethesda",
            "state": "MD",
            "postal_code": "208895600",
            "country_code": "US",
            "telephone_number": "301-295-0390",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "21785 Filigree Ct Ste 203",
            "address_purpose": "LOCATION",
            "city": "Ashburn",
            "state": "VA",
            "postal_code": "201476214",
            "country_code": "US",
            "telephone_number": "703-933-2820",
            "fax_number": "571-665-6820",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "8081 Innovation Park Dr Ste 700",
            "address_purpose": "LOCATION",
            "city": "Fairfax",
            "state": "VA",
            "postal_code": "220314867",
            "country_code": "US",
            "telephone_number": "571-472-2900",
            "fax_number": "571-742-2901",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1600 N Beauregard St Ste 150",
            "address_purpose": "LOCATION",
            "city": "Alexandria",
            "state": "VA",
            "postal_code": "223111732",
            "country_code": "US",
            "telephone_number": "703-776-6453",
            "fax_number": "703-776-2797",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "2501 Parkers Ln",
            "address_purpose": "LOCATION",
            "city": "Alexandria",
            "state": "VA",
            "postal_code": "223063209",
            "country_code": "US",
            "telephone_number": "703-664-7000",
            "fax_number": "703-664-7666",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1005 N Glebe Rd Ste 750",
            "address_purpose": "LOCATION",
            "city": "Arlington",
            "state": "VA",
            "postal_code": "222015766",
            "country_code": "US",
            "telephone_number": "703-524-7202",
            "fax_number": "703-516-4501",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "2901 Telestar Ct Ste 200",
            "address_purpose": "LOCATION",
            "city": "Falls Church",
            "state": "VA",
            "postal_code": "220421262",
            "country_code": "US",
            "telephone_number": "703-573-3494",
            "fax_number": "703-573-5353",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "FLANAGAN",
        "first_name": "MICHAEL",
        "middle_name": "CASEY",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-11-22",
        "last_updated": "2021-10-25",
        "certification_date": "2021-10-25",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "VA",
            "license": "0101238627",
            "primary": false
        },
        {
            "code": "207RC0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Cardiovascular Disease",
            "state": "VA",
            "license": "0101238627",
            "primary": false
        },
        {
            "code": "207RA0001X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Advanced Heart Failure and Transplant Cardiology",
            "state": "VA",
            "license": "0101238627",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "mflanagan168071@soc.inova.org",
            "affiliation": "Y",
            "endpointDescription": "Health Information Exchange",
            "affiliationName": "Inova Health Care Services",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "CCDA",
            "address_1": "3300 Gallows Rd",
            "city": "Falls Church",
            "state": "VA",
            "country_code": "US",
            "postal_code": "220423300",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Falls Church, VA

Sources for this page

Verify at the official NPI Registry.