Patricia Vassallo, MD
Cardiovascular Disease · Chicago, IL
At a glance
675 N Saint Clair St Ste 1900, Chicago, IL 60611-5975
NPPES record updated Jan 23, 2020. 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
This clinician has a currently effective opt-out record in the imported CMS file. Ask the practice about payment arrangements before booking.
- Effective Oct 1, 2026 through Oct 1, 2028
Source: Opt Out Affidavits : 2026-08-01 · Reporting period: 2026-08-01 to 2026-08-31 · Published Sep 21, 2026.
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
675 N Saint Clair St Ste 1900Chicago, IL 60611-5975
Education & affiliations
- Medical / professional school
- Georgetown University School Of Medicine
- Graduation year
- 2000
- CMS specialties
- Cardiovascular Disease (Cardiology)
CMS reports telehealth services for this clinician. Confirm current services and availability with the practice.
Reported hospital affiliations
- Northwestern Lake Forest Hospital Lake Forest, IL
- Northwestern Medicine Central Dupage Hospital Winfield, IL
- Northwestern Medicine Mchenry Mchenry, IL
- Northwestern Memorial Hospital Chicago, IL
- Palos Community Hospital Palos Heights, IL
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.
No displayed procedure-category record in this release. This does not mean the clinician performs no procedures.
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 | $17.06 |
Reporting companies
| Company | Amount |
|---|---|
| ZOLL SERVICES LLC (A/K/A ZOLL LIFECOR CORP) | $17.06 |
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
- Taxonomy code
- 207RC0000X
- Enumeration date
- Apr 20, 2007
- Record updated
- Jan 23, 2020
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- MD
Reported taxonomies and licenses
207RC0000X · Primary
License reported: 036108456 IL
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
675 N Saint Clair St Ste 1900Chicago, IL 60611-5975
- Phone
- (312) 695-4965
Mailing address
676 N SAINT CLAIR ST STE 600CHICAGO, IL 606112981
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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