Practitioner profile · NPI 1255694691
Katherine Sonya Ritter
Family Practice
Practice locations
- Northwestern Medical Faculty Foundation1001 Commerce Dr, Oak Brook, IL 60523
- Northwestern Medical Faculty Foundation10350 Haligus Rd, Huntley, IL 60142
- Northwestern Medical Faculty Foundation1333 W Belmont Ave, Chicago, IL 60657
- Northwestern Medical Faculty Foundation15300 W Ave, Orland Park, IL 60462
- Northwestern Medical Faculty Foundation1630 Sherman Ave, Evanston, IL 60201
- Northwestern Medical Faculty Foundation233 S Gary Ave, Bloomingdale, IL 60108Call (630) 358-4414
- Northwestern Medical Faculty Foundation233 S Gary Ave Suite 100, Bloomingdale, IL 60108Call (630) 225-2663
- Northwestern Medical Faculty Foundation235 S Gary Ave Suite 100, Bloomingdale, IL 60108Call (630) 893-9600
- Northwestern Medical Faculty Foundation2635 Church Rd Suite 101, Aurora, IL 60502Call (630) 315-6900
- Northwestern Medical Faculty Foundation2701 Patriot Blvd, Glenview, IL 60026
- Northwestern Medical Faculty Foundation2701 Patriot Blvd Suite 200, Glenview, IL 60026Call (312) 926-6146
- Northwestern Medical Faculty Foundation2900 Foxfield Rd Suite 100, St Charles, IL 60174Call (630) 377-6500
- Northwestern Medical Faculty Foundation360 Station Dr, Crystal Lake, IL 60014Call (815) 788-7500
- Northwestern Medical Faculty Foundation4445 W Irving Park Rd, Chicago, IL 60641
- Northwestern Medical Faculty Foundation525 Rockland Rd, Lake Bluff, IL 60044
- Northwestern Medical Faculty Foundation635 N Dearborn St, Chicago, IL 60654Call (312) 926-0404
- Northwestern Medical Faculty Foundation636 Raymond Dr Suite 107, Naperville, IL 60563Call (630) 416-2300
- Northwestern Medical Faculty Foundation660 N Westmoreland Rd 302 Lake Forest Obgyn, Lake Forest, IL 60045Call (312) 926-6146
- Northwestern Medical Faculty Foundation675 N Saint Clair St, Chicago, IL 60611
- Northwestern Medical Faculty Foundation675 N St Clair, Chicago, IL 60611
- Northwestern Medical Faculty Foundation7 Blanchard Cir, Wheaton, IL 60189
- Northwestern Medical Faculty Foundation820 Route 59, Barlett, IL 60103Call (630) 213-9600
- Northwestern Medical Faculty Foundation820 S Il Route 59 Suite 320, Bartlett, IL 60103Call (630) 225-2663
- Northwestern Medical Faculty Foundation870 N Milwaukee Ave, Vernon Hills, IL 60061
- Northwestern Medical Faculty Foundation885 Roosevelt Rd, Glen Ellyn, IL 60137
Training in the CMS record
- Credential
- MD
- Medical school
- Not reported
- Graduation year
- 2012
Residency, fellowship and board certification are not supplied by this CMS file.
Before you book
Ask the practice whether this practitioner sees patients of your age for your concern, is accepting new patients, and participates in your exact insurance plan at this location.
Ask who will review your records and follow up if your concerns remain unresolved.
CMS measures of specific care
These are 2024 results reported for this clinician’s NPI. Each CMS rating describes one measure of care, not patient reviews or an overall doctor grade. The patients, ages and insurance types included depend on the measure and collection method; these are not necessarily Medicare-only or pediatric results. They do not establish performance at a particular current practice.
No individual clinical measures approved by CMS for profile display are available for this doctor in this release. Missing results do not mean poor care. Many clinicians or measures are not publicly reported.
Released 2026-09-10. Only CMS display-approved MIPS and QCDR clinical measures are shown; participation attestations and cost measures are excluded. CMS uses a benchmark drawn from best performers covering at least 10% of the relevant patient population, with an adjustment for small denominators. ModernDoc has not independently validated these ratings. Source data and reported rates · CMS rating methodology · Coverage and reporting limits.
Reported procedure activity
CMS attributes these procedures to this clinician through Original Medicare and Medicare Advantage claims and encounters. Counts span locations and are not unique-patient counts. They do not establish quality, current availability, or that a procedure is offered at any practice listed here. Other insurance populations are not included.
No procedure activity is available for display in this release. This does not mean this doctor has no experience.
CMS release 2026-10-15. CMS describes a 12-month observation window with a three-month claims-processing lag; this file does not provide exact start and end dates. Only categories CMS marks for profile display are shown. Source data · How CMS reports procedures.
Patient experience at affiliated groups
No group survey results are linked in this release. Missing information is not a judgment about this doctor’s care.
CMS group survey year 2024 · Released 2026-09-10. View the source data · How CMS reports these measures.
Reconciled from 25 source records. Individual patient reviews and an overall clinical-quality rating are not available.