Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Mr. Domenico Ascenzio John Farina

Individual provider Internal Medicine Physician · NPI 1043665060

Mr. Domenico Ascenzio John Farina practises Gastroenterology in Chicago, Illinois. Graduated from Northwestern University Feinberg Medical School in 2016, 10 years ago. Practices with Northwestern Medical Faculty Foundation, a 4,394-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Illinois.

Years since qualifying
10
Trained at
Northwestern University Feinberg Medical School
Licensed in
IL
In the registry since
2016
Specialties on file
2
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Practice location Address checks out

259 E Erie St Ste 1600
Chicago, IL 60611-3111
Phone: (312) 695-5620
Fax: (312) 695-2729
Show map & directions

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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 201 East Huron Street, Chicago, IL 60611 — (312) 926-2253

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 036149120 (IL)
Internal Medicine Physician Taxonomy 207R00000X · Licence 125.068463 (IL)

Record details

NPI number1043665060
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedApril 27, 2016
Last updated in NPPESAugust 23, 2022
Certification dateAugust 23, 2022

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGASTROENTEROLOGY
Also practisesINTERNAL MEDICINE
Medical schoolNORTHWESTERN UNIVERSITY FEINBERG MEDICAL SCHOOL
Graduated 2016 (10 years in practice)
Group practice Northwestern Medical Faculty Foundation — 4394 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Upper gastrointestinal (GI) endoscopy for acid reflux 385 times · 97th percentile
Colonoscopy 55 times · 66th percentile

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients303
Services billed 741 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Northwestern Medical Faculty Foundation

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 4394 clinicians in the practice; 12 are shown here.

Other providers in Chicago