Ian Robert Barrows, MD
Cardiac Electrophysiology · Cardiovascular Disease (Cardiology) · Internal Medicine (CMS) · Largo, MD
At a glance
1221 Mercantile Ln, Largo, MD 20774-5374
Published activity: Pacemaker insertion or repair. View counts and coverage
NPPES record updated Jun 30, 2025. Public records can lag behind changes at a practice.
Before you call: a quick checklist
- Are you accepting new patients?
- Do you accept my specific insurance plan?
- Do you provide the service I need at this address?
- Do I need a referral, and what is the earliest appointment?
Insurance participation and appointment availability are not established by these public records.
Medicare & insurance
Insurance participation is not established by these public records. Ask the practice and your insurer about your specific plan and this location.
How to check your coverage
Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.
Check the official Medicare directory ↗Practice location
1221 Mercantile LnLargo, MD 20774-5374
Additional reported practice locations
600 N Wolfe StBaltimore, MD 21287
Phone: 4109336421 3800 Reservoir Rd Nw
Dept Of Medicine
Washington, DC 200072113
Phone: 2024448168
Fax: 8773031460 1250 E Marshall St
Richmond, VA 232985023
Phone: 8046281215
Education & affiliations
- Medical / professional school
- George Washington University School Of Medicine
- Graduation year
- 2016
- CMS specialties
- Cardiac Electrophysiology · Cardiovascular Disease (Cardiology) · Internal Medicine
Practice groups
Reported hospital affiliations
- Medstar Washington Hospital Center Washington, DC
Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.
Source: CMS National Downloadable File · Published Oct 15, 2026.
Source: CMS Facility Affiliation Data · Published Oct 15, 2026.
Procedures in the public data
Reported activity can help you ask more informed questions about a practice’s services.
| Procedure category | Published Medicare activity |
|---|---|
| Pacemaker insertion or repair | 1-10 |
CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology
Source: CMS Utilization Data · Published Oct 15, 2026.
Service-mix comparison is unavailable for this NPI in the imported Medicare service file.
Industry-reported general payments
Includes reported transfers of value, such as meals, travel, or consulting. Payments do not establish improper conduct or quality of care. Research funding and ownership values are excluded from this total.
See payment purposes and reporting companies
Reported purposes
| Purpose | Amount |
|---|---|
| Travel and lodging | $4,777.67 |
| Food and beverage | $3,889.00 |
| Education | $472.92 |
Reporting companies
| Company | Amount |
|---|---|
| BOSTON SCIENTIFIC CORPORATION | $2,594.00 |
| BIOTRONIK INC. | $2,227.25 |
| MEDTRONIC, INC. | $1,655.72 |
| ABBOTT LABORATORIES | $1,281.34 |
| BIOSENSE WEBSTER, INC. | $623.05 |
| PHILIPS NORTH AMERICA LLC | $576.15 |
| PENUMBRA, INC. | $165.25 |
| COOK MEDICAL LLC | $16.83 |
Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.
Professional details: NPI, taxonomy & registry record
Registry details
- Primary taxonomy
- Cardiac Electrophysiology · Cardiovascular Disease (Cardiology) · Internal Medicine (CMS)
- Taxonomy code
- 207RC0001X
- Enumeration date
- Apr 4, 2016
- Record updated
- Jun 30, 2025
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- MD
Reported taxonomies and licenses
207RC0000X
License reported: D87126 MD
207RC0001X · Primary
License reported: D0087126 MD
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
1221 Mercantile LnLargo, MD 20774-5374
- Phone
- (301) 821-6753
Mailing address
PO BOX 980257RICHMOND, VA 232980257
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
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