Domenico Ascenzio John Farina
Gastroenterology · Internal Medicine (CMS) · Chicago, IL
At a glance
259 E Erie St Ste 1600, Chicago, IL 60611-3111
Published activity: Colonoscopy · Upper gastrointestinal (GI) endoscopy for acid reflux. View counts and coverage
NPPES record updated Aug 23, 2022. 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
259 E Erie St Ste 1600Chicago, IL 60611-3111
Additional reported practice locations
201 East Huron StreetGalter 3-150
Chicago, IL 60611
Phone: 3129262253
Education & affiliations
- Medical / professional school
- Northwestern University Feinberg Medical School
- Graduation year
- 2016
- CMS specialties
- Gastroenterology · Internal Medicine
CMS reports telehealth services for this clinician. Confirm current services and availability with the practice.
Practice groups
Reported hospital affiliations
- Northwestern Lake Forest Hospital Lake Forest, IL
- Northwestern Medicine Central Dupage Hospital Winfield, 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.
| Procedure category | Published Medicare activity |
|---|---|
| Colonoscopy | 85 |
| Upper gastrointestinal (GI) endoscopy for acid reflux | 426 |
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
No matching general-payment summary in the imported release. This is not a verified zero and does not rule out other payment types or years.
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
- Gastroenterology · Internal Medicine (CMS)
- Taxonomy code
- 207RG0100X
- Enumeration date
- Apr 27, 2016
- Record updated
- Aug 23, 2022
More registry details
- Provider type
- Individual · Type 1
Reported taxonomies and licenses
207R00000X
License reported: 125.068463 IL
207RG0100X · Primary
License reported: 036149120 IL
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
259 E Erie St Ste 1600Chicago, IL 60611-3111
- Phone
- (312) 695-5620
- Fax
- (312) 695-2729
Mailing address
259 E ERIE ST STE 1600CHICAGO, IL 606113111
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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