On Call Medical Services LLC
NPI 1578252318 · Urgent Care Clinic/Center · Chicago, IL
On Call Medical Services LLC is a Urgent Care Clinic/Center organization in Chicago, IL (NPI 1578252318).
Provider details
- NPI number
- 1578252318
- Entity type
- Organization
- Primary specialty
- Urgent Care Clinic/CenterAmbulatory Health Care Facilities
- Organization subpart
- No
- Authorized official
- Samuel Singer, Owner/Physician(240) 354-6795
Specialties & taxonomies
Ambulatory Health Care Facilities
- Pediatrics Physician208000000X
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
3 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Other names (DBA / former)
- Doing business as
- On Call Pediatrics
- Doing business as
- Pediatricare
Registry dates
- Enumerated
- 2023-05-08
- Last updated
- 2023-07-28
- Certified
- 2023-07-21
Frequently asked questions
- What is On Call Medical Services LLC's NPI number?
- On Call Medical Services LLC's National Provider Identifier (NPI) is 1578252318, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is On Call Medical Services LLC?
- On Call Medical Services LLC is classified in the NPPES registry as Urgent Care Clinic/Center (Ambulatory Health Care Facilities).
- Where is On Call Medical Services LLC located?
- On Call Medical Services LLC's practice location on file with NPPES is 2934 W Sherwin Ave, Chicago, IL 60645-1210.
- What is On Call Medical Services LLC's phone number?
- The practice phone number listed in the NPPES registry for On Call Medical Services LLC is (240) 354-6795.
- Who is the authorized official for On Call Medical Services LLC?
- The authorized official listed on On Call Medical Services LLC's NPPES record is Samuel Singer, Owner/Physician. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is On Call Medical Services LLC's NPI active?
- Yes — On Call Medical Services LLC's NPI (1578252318) is active in the NPPES registry as of the last update on 2023-07-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.