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Holter Monitors

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Short-term monitoring of irregular heartbeats with a portable device

Expert Heart & Vascular Care

Getting the care you need starts with seeing one of our heart or vascular specialists.

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A Holter monitor is a small device that records the heart’s electrical activity. It works similarly to an electrocardiogram. However, whereas an electrocardiogram measures your heart’s rhythms over a period of a few minutes, a Holter monitor measures them over the course of a day or two.

What to expect from a Holter monitor

Your doctor will give you a Holter monitor and show you how to use it. The device will include wires that connect to sticky patches called electrodes. These patches will be placed on your chest, and you’ll wear the monitor on a belt or shoulder strap.

The Holter monitor will record your heart rhythms continuously for one to two days, depending on what your doctor recommends. During this time, you’ll need to keep a diary of what you did and whether you noticed any symptoms, such as:

  • Dizziness
  • Fainting
  • Heart palpitations
  • Irregular heartbeat

After the test period, you’ll turn in the Holter monitor and your diary to your doctor, who will compare the test results and your activities to determine what’s causing your symptoms.

Holter monitors shouldn’t have any effect on your daily activities. The testing process isn’t painful, and the only side effect you may notice is a slight rash where the electrodes stick to your skin. This rash usually goes away on its own.

Electrophysiology Program

We are leaders in developing and using the latest procedures and technologies to treat heart rhythm disorders, and our cardiac electrophysiology laboratory is one of the most sophisticated in North America.

Learn More

Physicians

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83 Doctors & Specialists
Dr. Bryan LeBude, MD
Dr. Bryan LeBude, MD
Cardiology
(220)
12070 Old Line Center Suite 202 Waldorf, MD 20602
301-292-7270
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Dr. Robert A. Lager, MD
Dr. Robert A. Lager, MD
Cardiology
(348)
1133 21st Street Northwest Suite 700 Washington, DC 20036
202-416-2000
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Dr. Roquell E. Wyche, MD
Dr. Roquell E. Wyche, MD
Cardiology
12070 Old Line Center Suite 303 Waldorf, MD 20602
(202) 499-6999
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Dr. Sriram Padmanabhan, MD
Dr. Sriram Padmanabhan, MD
Cardiology
(459)
9105 Franklin Square Drive WHITE SQUARE PROF BLDG Rosedale, MD 21237
(410) 574-1330
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Dr. Basirmohmad F. Kolia, MD
Dr. Basirmohmad F. Kolia, MD
Cardiology
(347)
12070 Old Line Center Suite 202 Waldorf, MD 20602
(301) 856-2620
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Dr. Miriam L. Cohen, MD
Dr. Miriam L. Cohen, MD
Cardiology
(389)
3333 North Calvert Street Johnston Professional Building Baltimore, MD 21218
410-366-5600
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Dr. Daniel James Dooley, MD
Dr. Daniel James Dooley, MD
Cardiology
1630 Main Street Suite 208 Chester, MD 21619
(410) 573-6480
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Dr. Anil K. Shah, MD
Dr. Anil K. Shah, MD
Cardiology
(380)
24035 Three Notch Road Hollywood, MD 20636
(301) 373-7900
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Dr. John Frank Marra, MD
Dr. John Frank Marra, MD
Cardiology
(357)
5601 Loch Raven Boulevard Russell Morgan Bldg Baltimore, MD 21239
(443) 444-4700
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Dr. Alexander Ryzhikov, MD
Dr. Alexander Ryzhikov, MD
Cardiology
(446)
12070 Old Line Center Suite 202 Waldorf, MD 20602
(301) 705-7870
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Dr. Michael Benjamin Lee, MD
Dr. Michael Benjamin Lee, MD
Cardiology
(426)
18101 Prince Philip Drive Floor 4 Olney, MD 20832
(202) 416-2000
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Dr. Kerunne S. Ketlogetswe, MD
Dr. Kerunne S. Ketlogetswe, MD
Cardiology
(222)
3001 South Hanover Street Outpatient Center Floor 2 Baltimore, MD 21225
(410) 350-2106
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Dr. Jeffrey Jay Brown, MD
Dr. Jeffrey Jay Brown, MD
Cardiology
(481)
9105 Franklin Square Drive WHITE SQUARE PROF BLDG Rosedale, MD 21237
(410) 574-1330
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Dr. Amish V. Shah, MD
Dr. Amish V. Shah, MD
Cardiology
(402)
24035 Three Notch Road Hollywood, MD 20636
(301) 373-7900
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Dr. Reed M. Shnider, MD
Dr. Reed M. Shnider, MD
Cardiology
(597)
18101 Prince Philip Drive Suite 4100 Olney, MD 20832
(301) 570-7404
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Dr. Andrew Weidner Ertel, MD
Dr. Andrew Weidner Ertel, MD
Valvular Disease Cardiology | Cardiology | Structural Heart Disease Cardiology | Cardiac Imaging
(137)
110 Irving Street Northwest Suite NW Washington, DC 20010
(202) 877-7777
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Dr. Richard L. Morrissey, MD
Dr. Richard L. Morrissey, MD
Cardiology
(342)
3800 Reservoir Road Northwest Washington, DC 20007
(202) 444-5111
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Dr. Jared Michael Widell, MD
Dr. Jared Michael Widell, MD
Cardiology | Cardiac Imaging
5601 Loch Raven Boulevard Building 2 Baltimore, MD 21239
(202) 877-6264 or (202) 444-8833
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Dr. Allen J. Taylor, MD
Dr. Allen J. Taylor, MD
Cardiology
(135)
3800 Reservoir Road Northwest Building 5 Washington, DC 20007
(202) 444-5111
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Dr. Conor Francis Lundergan, MD
Dr. Conor Francis Lundergan, MD
Cardiology
(576)
13950 Brandywine Road Suite 100 Brandywine, MD 20613
(301) 782-2220
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Dr. Raymond K. Young, II, MD
Dr. Raymond K. Young, II, MD
Cardiology
(170)
5601 Loch Raven Boulevard Russell Morgan Bldg Baltimore, MD 21239
443-444-4700
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Dr. Raktim Kumar Ghosh, MD
Dr. Raktim Kumar Ghosh, MD
Cardiology
3333 North Calvert Street Johnston Professional Building Baltimore, MD 21218
410-574-1330
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Dr. Carolina Isabel Valdiviezo Schlomp, MD
Dr. Carolina Isabel Valdiviezo Schlomp, MD
Cardiology
(205)
3800 Reservoir Road Northwest Washington, DC 20007
(202) 444-5111
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Dr. Christy Leigh Kaiser, MD
Dr. Christy Leigh Kaiser, MD
Cardiology
(201)
3800 Reservoir Road Northwest Washington, DC 20007
(202) 444-5111
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Dr. Meena V. Shah, MD
Dr. Meena V. Shah, MD
Cardiology
(454)
130 Hospital Road Suite 300 Prince Frederick, MD 20678
(410) 535-4333
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Dr. Jeffrey Bruce Trabb, MD
Dr. Jeffrey Bruce Trabb, MD
Cardiology
(541)
23507 Hollywood Road Suite 2 Leonardtown, MD 20650
(301) 782-2220
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Dr. Stuart F. Seides, MD
Dr. Stuart F. Seides, MD
Cardiology
106 Irving Street Northwest Suite 4800N Washington, DC 20010
202-416-2000
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Dr. Louis K. Essandoh, MD
Dr. Louis K. Essandoh, MD
Cardiology
(511)
2002 Medical Parkway Suite 500 Annapolis, MD 21401
(410) 573-6480
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Dr. Kabir Yousuf, MD
Dr. Kabir Yousuf, MD
Cardiology
24035 Three Notch Road Hollywood, MD 20636
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Dr. Mouin S. Abdallah, MD
Dr. Mouin S. Abdallah, MD
Cardiology
110 Irving Street Northwest Suite NW Washington, DC 20010
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Dr. Dawn Warner Kershner, DO
Dr. Dawn Warner Kershner, DO
Cardiology
(491)
1420 Key Highway Baltimore, MD 21230
(410) 366-5600
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Dr. Benjamin Irving Lee, MD
Dr. Benjamin Irving Lee, MD
Cardiology
(400)
1133 21st Street Northwest Suite 700 Washington, DC 20036
(202) 416-2000
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Dr. Lawrence D. Jacobs, MD
Dr. Lawrence D. Jacobs, MD
Cardiology
(616)
2002 Medical Parkway Suite 500 Annapolis, MD 21401
(410) 573-6480
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Dr. Jonathan E. Patrick, MD
Dr. Jonathan E. Patrick, MD
Cardiology
(155)
110 Irving Street Northwest Suite NW Washington, DC 20010
(202) 877-4698
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Dr. Jonathan A. Altschuler, MD
Dr. Jonathan A. Altschuler, MD
Cardiology
(483)
2002 Medical Parkway Suite 500 Annapolis, MD 21401
(410) 573-6480
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Dr. Bhavin Mahesh Patel, DO
Dr. Bhavin Mahesh Patel, DO
Cardiology
9105 Franklin Square Drive WHITE SQUARE PROF BLDG Rosedale, MD 21237
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Dr. Sumbal Ashraf Janjua, MD
Dr. Sumbal Ashraf Janjua, MD
Cardiology
9000 Franklin Square Drive MedStar Franklin Square Medical Center Baltimore, MD 21237
(202) 877-7777
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Dr. Preetham N. Kumar, MD
Dr. Preetham N. Kumar, MD
Cardiology | Cardiac Imaging
(89)
110 Irving Street Northwest Suite NW Washington, DC 20010
(202) 877-7777
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Dr. Etonde Mafany Musonge-Tarkang, MD
Dr. Etonde Mafany Musonge-Tarkang, MD
Cardiology
110 Irving Street Northwest Room 4B-1 Washington, DC 20010
(202) 877-2181
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Dr. Patrick T. Bering, MD
Dr. Patrick T. Bering, MD
Cardiology | Cardiac Imaging
110 Irving Street Northwest Suite NW Washington, DC 20010
(202) 877-7777
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Dr. Micheas Zemedkun, MD
Dr. Micheas Zemedkun, MD
Cardiology
(196)
1133 21st Street Northwest Building 2 – 7th Floor Washington, DC 20036
202-877-5800
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Dr. Nanette H. Bishopric, MD
Dr. Nanette H. Bishopric, MD
Cardiology
3800 Reservoir Road Northwest Washington, DC 20007
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Dr. Estelle Darlyse Jean, MD
Dr. Estelle Darlyse Jean, MD
Cardiology
(491)
18101 Prince Philip Drive Suite 4100 Olney, MD 20832
(301) 570-7404
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Dr. Valeriani R. Bead, MD
Dr. Valeriani R. Bead, MD
Cardiology
(671)
2002 Medical Parkway Suite 500 Annapolis, MD 21401
(410) 573-6480
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Dr. Anil Pandit, MD
Dr. Anil Pandit, MD
Cardiology
12 Medstar Boulevard Bel Air, MD 21015
410-574-1330
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Dr. Stephanie Schwalm Jacobs, MD
Dr. Stephanie Schwalm Jacobs, MD
Cardiology
(449)
2002 Medical Parkway Suite 500 Annapolis, MD 21401
(410) 573-6480
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Dr. Rahul Anand, MD
Dr. Rahul Anand, MD
Cardiology
9105 Franklin Square Drive WHITE SQUARE PROF BLDG Rosedale, MD 21237
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Dr. Kenneth M. Lee, MD
Dr. Kenneth M. Lee, MD
Cardiology
(509)
1133 21st Street Northwest 700 Washington, DC 20036
(202) 416-2000
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Dr. Abdelrahman Abdallah A Aly, MD
Dr. Abdelrahman Abdallah A Aly, MD
Cardiology
23507 Hollywood Road Suite 2 Leonardtown, MD 20650
(301) 782-2220
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Dr. Richard Ira Weinstein, MD
Dr. Richard Ira Weinstein, MD
Cardiology
18109 Prince Philip Drive Suite 125 Olney, MD 20832
301-570-7404
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Dr. Jose D. Vargas, MD
Dr. Jose D. Vargas, MD
Cardiology
(231)
3800 Reservoir Road Northwest Building 5 Washington, DC 20007
(202) 444-5111
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Dr. Ronak K. Patel, MD
Dr. Ronak K. Patel, MD
Cardiology
5601 Loch Raven Boulevard Russell Morgan Bldg Baltimore, MD 21239
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Dr. Stuart D. Gould, MD
Dr. Stuart D. Gould, MD
Cardiology
(514)
18101 Prince Philip Drive Suite 4100 Olney, MD 20832
301-570-7404
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Dr. Nicholas Paivanas, MD
Dr. Nicholas Paivanas, MD
Cardiology
(335)
2002 Medical Parkway Suite 500 Annapolis, MD 21401
410-573-6480
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Dr. Deidra L. Varner, MD
Dr. Deidra L. Varner, MD
Cardiology
11701 Livingston Road Suite 203 Fort Washington, MD 20744
(301) 292-7270
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Dr. Mansoor Mozayan, MD
Dr. Mansoor Mozayan, MD
Cardiology
(320)
9105 Franklin Square Drive WHITE SQUARE PROF BLDG Rosedale, MD 21237
(410) 574-1330
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Dr. Allison Christine Warren, MD
Dr. Allison Christine Warren, MD
Cardiology
(358)
106 Irving Street Northwest Suite 4800 Washington, DC 20010
(202) 416-2000
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Dr. Ebony Rebecca Alston, MD
Dr. Ebony Rebecca Alston, MD
Cardiology
9105 Franklin Square Drive WHITE SQUARE PROF BLDG Rosedale, MD 21237
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Dr. Barbara Louise Bean, MD
Dr. Barbara Louise Bean, MD
Cardiology
(475)
2002 Medical Parkway Suite 500 Annapolis, MD 21401
(410) 573-6480
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Dr. Anjili Srivastava, DO
Dr. Anjili Srivastava, DO
Cardiology
3333 North Calvert Street Johnston Professional Building Baltimore, MD 21218
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Dr. Rahul Malik, MD
Dr. Rahul Malik, MD
Cardiology
(238)
23507 Hollywood Road Suite 2 Leonardtown, MD 20650
(301) 782-2220
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Dr. Ankit B. Shah, MD, MPH
Dr. Ankit B. Shah, MD, MPH
Cardiology
(132)
3333 North Calvert Street Johnston Professional Building Baltimore, MD 21218
(410) 366-5600
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Dr. George Dewey Bittar, MD
Dr. George Dewey Bittar, MD
Cardiology
(301)
3333 North Calvert Street Johnston Professional Building Baltimore, MD 21218
410-366-5600
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Dr. John J. Kennedy, MD
Dr. John J. Kennedy, MD
Cardiology
(641)
2002 Medical Parkway Suite 500 Annapolis, MD 21401
(410) 573-6480
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Dr. Reginald LaMar Robinson, MD
Dr. Reginald LaMar Robinson, MD
Cardiology
(459)
106 Irving Street Northwest North Tower Suite 4800 Washington, DC 20010
(202) 877-5800
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Dr. Jennifer Rebecca Brown, MD
Dr. Jennifer Rebecca Brown, MD
Heart Failure and Transplantation Cardiology | Cardiology
2002 Medical Parkway Suite 500 Annapolis, MD 21401
(410) 573-6480
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Dr. Monvadi B. Srichai-Parsia, MD
Dr. Monvadi B. Srichai-Parsia, MD
Cardiology
(216)
3800 Reservoir Road Northwest Pasquerilla Healthcare Center, 5th Floor Washington, DC 20007
(202) 444-5111
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Dr. William Guy Weigold, III, MD
Dr. William Guy Weigold, III, MD
Cardiology
(76)
110 Irving Street Northwest Suite NW Washington, DC 20010
202-877-7777
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Dr. Harjit K. Chahal, MD
Dr. Harjit K. Chahal, MD
Cardiology
(268)
1133 21st Street Northwest Suite 7000 Washington, DC 20036
(202) 416-2000
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Dr. Rodney Arthur Johnson, MD
Dr. Rodney Arthur Johnson, MD
Cardiology
(453)
9105 Franklin Square Drive WHITE SQUARE PROF BLDG Rosedale, MD 21237
(410) 574-1330
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Dr. Orest B. Bartoszyk, MD
Dr. Orest B. Bartoszyk, MD
Cardiology
(462)
13950 Brandywine Road Suite 100 Brandywine, MD 20613
(301) 782-2220
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Dr. Edward Ian Morris, MD
Dr. Edward Ian Morris, MD
Cardiology
(517)
106 Irving Street Northwest North Tower, Suite 4800 Washington, DC 20010
(202) 877-5800
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Dr. Adinath A. Patil, MD
Dr. Adinath A. Patil, MD
Cardiology
(270)
24035 Three Notch Road Hollywood, MD 20636
(301) 373-7900
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Dr. Terrance Andrew Collins, MD
Dr. Terrance Andrew Collins, MD
Cardiology
(495)
13950 Brandywine Road Suite 100 Brandywine, MD 20613
(301) 782-2220
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Dr. Kelley W. Sullivan, MD
Dr. Kelley W. Sullivan, MD
Cardiology
(510)
2002 Medical Parkway Suite 500 Annapolis, MD 21401
(410) 573-6480
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Dr. Hitesh Chawla, MD
Dr. Hitesh Chawla, MD
Cardiology
5601 Loch Raven Boulevard Russell Morgan Bldg Baltimore, MD 21239
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Dr. Satish N. Jumani, MD
Dr. Satish N. Jumani, MD
Cardiology
(366)
12070 Old Line Center Suite 202 Waldorf, MD 20602
(301) 705-7870
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Dr. Oluseyi Omole Princewill, MD, MPH
Dr. Oluseyi Omole Princewill, MD, MPH
Cardiology
(348)
18101 Prince Philip Drive Suite 4100 Olney, MD 20832
(301) 570-7404
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Dr. Andrew Y. Chen, MD
Dr. Andrew Y. Chen, MD
Cardiology | Cardiac Imaging
110 Irving Street Northwest Room 1105 Washington, DC 20010
(202) 877-7777
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Dr. John Clayton Patterson, MD
Dr. John Clayton Patterson, MD
Cardiology
(169)
10403 Hospital Drive Suite 102 Clinton, MD 20735
(301) 292-7270
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Dr. David A. Goldscher, MD
Dr. David A. Goldscher, MD
Cardiology
(400)
3333 North Calvert Street Johnston Professional Building Baltimore, MD 21218
(410) 366-5600
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Dr. Marc A. Mugmon, MD
Dr. Marc A. Mugmon, MD
Cardiology
(456)
200 East 33rd Street Suite 329 Baltimore, MD 21218
(410) 366-5600
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Dr. William Clarence Maxted, Jr., MD
Dr. William Clarence Maxted, Jr., MD
Cardiology
(466)
2002 Medical Parkway Suite 500 Annapolis, MD 21401
(410) 573-6480
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