Sean Cornelius Galligan, MD
Cardiovascular Disease (Cardiology) (CMS) · Brooklyn, NY
At a glance
502 86Th St, Brooklyn, NY 11209-5211
Published activity: Removal of nail tissue. View counts and coverage
NPPES record updated Sep 23, 2026. 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
502 86Th StBrooklyn, NY 11209-5211
Additional reported practice locations
800 Poly PlBrooklyn, NY 112097104
Phone: 7188366600 1058 Forest Ave
Staten Island, NY 103102419
Phone: 7188187425
Education & affiliations
- Medical / professional school
- Not reported in this file
- Graduation year
- 2011
- CMS specialties
- Cardiovascular Disease (Cardiology)
Practice groups
Reported hospital affiliations
- Richmond University Medical Center Staten Island, NY
- Staten Island University Hospital Staten Island, NY
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 |
|---|---|
| Removal of nail tissue | 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.
Find providers with a similar service mix
Compare 2024 published Medicare activity in the same reported specialty, here or in another city.
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 |
|---|---|
| Food and beverage | $904.67 |
| Education | $99.00 |
Reporting companies
| Company | Amount |
|---|---|
| NOVARTIS PHARMACEUTICALS CORPORATION | $253.56 |
| ZOLL SERVICES LLC (A/K/A ZOLL LIFECOR CORP) | $184.77 |
| ALNYLAM PHARMACEUTICALS INC. | $169.89 |
| ACTELION PHARMACEUTICALS US, INC. | $122.66 |
| AMGEN INC. | $73.71 |
| MERCK SHARP & DOHME LLC | $55.30 |
| BAYER HEALTHCARE PHARMACEUTICALS INC. | $45.31 |
| PFIZER INC. | $39.39 |
| Other reporting companies | $59.08 |
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
- Cardiovascular Disease (Cardiology) (CMS)
- Taxonomy code
- 207RI0011X
- Enumeration date
- Apr 28, 2011
- Record updated
- Sep 23, 2026
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- MD
Reported taxonomies and licenses
207R00000X
License reported: 292502 NY
207RI0011X · Primary
License reported: 292502 NY
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
502 86Th StBrooklyn, NY 11209-5211
- Phone
- (929) 470-8403
Mailing address
2649 STRANG BLVD STE 304YORKTOWN HEIGHTS, NY 105982938
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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