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Urgent care center

On Call Medical Services LLC

Chicago, Illinois · Cook County

  • 2934 W Sherwin Ave, Chicago, IL 60645 · Directions
  • (240) 354‑6795
  • Emergency room: no, urgent care is not an emergency room
  • Type: Urgent care center

On Call Medical Services LLC is an urgent care center at 2934 W Sherwin Ave, Chicago, IL 60645. Phone: (240) 354-6795. It is an urgent care center, not a hospital emergency room. Source: CMS National Plan and Provider Enumeration System (NPPES), November 1, 2026.

Data as of November 1, 2026. Source: NPPES Downloadable File (NPI Registry), CMS National Plan and Provider Enumeration System (NPPES) (data updated 2026-11-01, retrieved 2026-11-07).

NPPES record last updated July 28, 2023, 3 years ago. Address, phone and whether this place is still open may have changed: call before you go.

Summary

On Call Medical Services LLC is an urgent care center in Chicago, Illinois. It is an urgent care center, not a hospital emergency room. NPI 1578252318. Source: CMS National Plan and Provider Enumeration System (NPPES), data updated 2026-11-01, retrieved 2026-11-07.

What is an urgent care center?

An urgent care center treats illnesses and injuries that need care soon but are not emergencies, for example sprains, small cuts, a fever or an earache, usually without an appointment. For chest pain, trouble breathing, signs of a stroke or a serious injury, call 911. ER or urgent care: how to choose

Official data

This page shows the record that On Call Medical Services LLC keeps in the federal NPI Registry (last updated July 28, 2023). Hours, services and whether it is still open are not part of that record: call before you go.

In a medical emergency, call 911.

At a glance

Urgent care centerType

Quick answers

What is On Call Medical Services LLC?
On Call Medical Services LLC is an urgent care center in Chicago, Illinois, according to CMS National Plan and Provider Enumeration System (NPPES).
Where is On Call Medical Services LLC?
2934 W Sherwin Ave, Chicago, IL 60645, in Cook County, Illinois.
What is the phone number of On Call Medical Services LLC?
(240) 354-6795, as listed by CMS National Plan and Provider Enumeration System (NPPES). Call to confirm hours before you go.
Is On Call Medical Services LLC an emergency room?
No. It is registered as an urgent care center, not a hospital emergency department. The closest hospitals that list emergency services: Saint Francis Hospital-Evanston (1.1 mi), Swedish Hospital (2.5 mi) and Methodist Hospital of Chicago (2.8 mi). In a medical emergency, call 911.

What to ask when you call

  • Are you taking new patients, and how soon can I be seen?
  • Do you accept my insurance, Medicare or Medicaid?
  • Do I need an appointment, and what is the cost if I pay myself?
  • What services do you offer here (for example dental, mental health, vaccines, lab tests)?
  • What are your hours, and do you have interpreters or staff who speak my language?

A general checklist, not medical advice. For questions about your health or your medicines, ask your doctor or pharmacist.

Other clinics and urgent care nearby

By straight-line distance (not driving distance).

Community health centers nearby

Pharmacies nearby

Nearest emergency rooms

Hospitals that list emergency services in Medicare data, by straight-line distance.

More in Chicago

All clinics and urgent care in Chicago (39) · Clinics and urgent care in Cook County · Clinics and urgent care in Illinois · Hospitals in Chicago · Find the closest emergency room to where you are →

Details from the official record

TypeUrgent care center
Address2934 W Sherwin Ave, Chicago, IL 60645
CountyCook County
StateIllinois
Phone(240) 354‑6795
Name in the official recordON CALL MEDICAL SERVICES LLC
National Provider Identifier (NPI)1578252318
In the NPI Registry sinceMay 8, 2023
NPI record last updatedJuly 28, 2023
CorrectionsReport an error or suggest an update →

Sources

  1. NPPES Downloadable File (NPI Registry) — CMS National Plan and Provider Enumeration System (NPPES), data updated 2026-11-01, retrieved 2026-11-07
  2. NPI Registry record 1578252318 — U.S. Department of Health and Human Services
  3. U.S. Census Bureau ZIP code areas (gazetteer and ZIP-to-county relationship file) — approximate position (center of the ZIP code area) used for distances, and the county