On Call Medical Services LLC

Public-record details

Address

2934 W Sherwin Ave, Chicago, IL 60645

Phone

(240) 354-6795

Listed under

All urgent care centers

NPI

1578252318

NPI status

Active in the NPPES registry

Provider type

Organization (practice, clinic or company)

Registered specialty (self-reported taxonomy)

Urgent Care Clinic/Center (261QU0200X)

Authorized official

Samuel Singer, MD, Owner/physician

NPI first issued

May 8, 2023

NPI record last updated

Jul 28, 2023

NPI 1578252318 is active in the federal NPPES registry (CMS). Source: NPPES NPI Registry (CMS) (record). Data as of 2026-09-30.

What these registry facts mean

The NPI (National Provider Identifier) is the federal ID every HIPAA-covered provider uses to bill insurance. This NPI belongs to an organization, so it may cover several clinicians at this location. The specialty is the taxonomy the provider chose when registering; NPPES does not check it. A license number here is what the provider entered — confirm it with the state board before you rely on it. Hours, walk-in policy, X-ray and lab services and the insurance plans accepted vary by center and are not in the registry — call or check the center's website before you go. For chest pain, trouble breathing, stroke signs or severe bleeding, call 911.

View NPI 1578252318 in the official registry ↗