OAK FOREST HOSPITAL
NPI 1689739716
General Acute Care Hospital in Oak Forest, IL

Active since December 27, 2006
15900 SOUTH CICERO AVENUE, OAK FOREST, IL 60452(708) 633-3400(708) 633-3407 Get Directions Write a Review

NPPES record last updated: July 14, 2010. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Oak Forest Hospital NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

OAK FOREST HOSPITAL (NPI 1689739716) is a healthcare organization registered as a general acute care hospital in Oak Forest, Illinois and active in the NPI registry since December 2006. The organization lists John Cookinham, Chief Financial Officer, as its authorized official.

NPPES Registry Identity

NPI1689739716
Entity TypeOrganization
Primary Taxonomy282N00000X
Legal Business NameCOOK COUNTY
Location Address15900 SOUTH CICERO AVENUEOak Forest, IL 60452-4000
Mailing Address15900 South Cicero AvenueOak Forest, IL 60452-4000 · (708) 633-3400 · Fax (708) 633-3407
Fax(708) 633-3407
Organization SubpartYes
Authorized OfficialJohn CookinhamChief Financial Officer · (708) 633-3479
Enumeration DateDecember 27, 2006
Last NPPES UpdateJuly 14, 2010
✔ NPI 1689739716 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyGeneral Acute Care HospitalHospitals
Taxonomy Code282N00000X
License✔ Licensed in IL · 0001743
Definition
An acute general hospital is an institution whose primary function is to provide inpatient diagnostic and therapeutic services for a variety of medical conditions, both surgical and non-surgical, to a wide population group. The hospital treats patients in an acute phase of illness or injury, characterized by a single episode or a fairly short duration, from which the patient returns to his or her normal or previous level of activity.
15900 SOUTH CICERO AVENUE, Oak Forest, IL 60452

Other Names 1

Doing Business AsOak Forest Hospital

Other Identifiers 5

Other0048IL · Acute Hospital, Bcbs
Medicare OSCAR/certification140301IL
Other01617618IL · Bcbs Physician 1500
Medicaid=========001IL
Medicare ID-Type Unspecified814400IL · Medicare Physician

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Oak Forest Hospital is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

1,043

Medicare enrollment records show 1,043 clinicians reassign Medicare billing to Oak Forest Hospital, which bills Medicare for the services they deliver. Of these, 49 practice within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 58

Internal Medicine128
Nurse Practitioner86
Pediatric Medicine80
Emergency Medicine77
Family Practice55
Diagnostic Radiology47
Clinical Social Worker46
General Surgery35
50 other specialties489

Nearest to this location (20)

See all 1,043
Infectious Disease
NPI 1871596817
15900 CICERO AVE
Oak Forest, IL 60452
(708) 633-4133
✔ PECOS✔ Accepts Medicare0.2 mi
Optometry
NPI 1437292356
15900 S CICERO AVE
Oak Forest, IL 60452
(708) 633-3478
✔ PECOS✔ Accepts Medicare0.2 mi
Cardiovascular Disease (Cardiology)
NPI 1710063714
15900 CICERO AVE
Oak Forest, IL 60452
(708) 633-3244
✔ PECOS✔ Accepts Medicare0.2 mi
Physical Medicine and Rehabilitation
NPI 1033315999
15900 SOUTH CICERO AVENUE DEPARTMENT OF REHABILITATION SERVICES
Oak Forest, IL 60452
(708) 633-3091
✔ PECOS✔ Accepts Medicare0.2 mi
Internal Medicine
NPI 1801945472
15900 S CICERO AVE
Oak Forest, IL 60452
(708) 663-3478
✔ PECOS✔ Accepts Medicare0.2 mi
Physical Medicine and Rehabilitation
NPI 1295883791
15900 SOUTH CICERO AVE
Oak Forest, IL 60452
(708) 633-3091
✔ PECOS✔ Accepts Medicare0.2 mi
Dentist
NPI 1679674931
3330 W 177TH ST UNIT 1-G
Hazel Crest, IL 60429
(708) 798-7400
✔ PECOS3.0 mi
Anesthesiology
NPI 1154341303
17800 KEDZIE AVE
Chicago, IL 60607
(708) 799-8000
✔ PECOS✔ Accepts Medicare3.1 mi
Family Practice
NPI 1376578799
13450 S KEDZIE AVE ROBBINS HEALTH CENTER
Robbins, IL 60472
(708) 293-8100
✔ PECOS✔ Accepts Medicare3.6 mi
Diagnostic Radiology
NPI 1770746711
71 W 156TH ST SUITE 110
Harvey, IL 60426
(773) 203-2220
✔ PECOS✔ Accepts Medicare3.8 mi
Interventional Radiology
NPI 1285074104
1 INGALLS DR
Harvey, IL 60426
(708) 915-5614
✔ PECOS✔ Accepts Medicare3.8 mi
Nurse Practitioner
NPI 1043608631
31 W. 155TH STREET
Harvey, IL 60426
(708) 596-5177
✔ PECOS✔ Accepts Medicare4.1 mi
Ophthalmology
NPI 1992809941
18440 GOVERNORS HWY
Homewood, IL 60430
(708) 798-2191
✔ PECOS✔ Accepts Medicare4.2 mi
Clinical Social Worker
NPI 1972225738
12757 WESTERN AVE
Blue Island, IL 60406
(708) 293-8400
✔ PECOS✔ Accepts Medicare4.9 mi
Urology
NPI 1699295808
20201 CRAWFORD AVE STE 1276
Olympia Fields, IL 60461
(708) 855-7684
✔ PECOS✔ Accepts Medicare5.6 mi
Emergency Medicine
NPI 1144761495
20201 CRAWFORD AVE
Olympia Fields, IL 60461
(708) 747-4000
✔ PECOS✔ Accepts Medicare5.7 mi
Pulmonary Disease
NPI 1538504493
3800 W 203RD ST SUITE 202
Olympia Fields, IL 60461
(708) 679-2661
✔ PECOS✔ Accepts Medicare5.8 mi
Clinical Social Worker
NPI 1821677550
15303 S 94TH AVE STE 250
Orland Park, IL 60462
(708) 505-5205
✔ PECOS6.0 mi
Vascular Surgery
NPI 1023109899
12251 S 80TH AVE STE 1520
Palos Heights, IL 60463
(708) 923-4200
✔ PECOS✔ Accepts Medicare6.1 mi
Nurse Practitioner
NPI 1134846124
504 WYSTERIA DR
Olympia Flds, IL 60461
(312) 864-6000
✔ PECOS✔ Accepts Medicare6.6 mi
See all 1,043 clinicians

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Cook County's NPI number?

The NPI number for Cook County is 1689739716. It was assigned to this organization in the NPPES registry on December 27, 2006. The provider is doing business as Oak Forest Hospital.

Where is Cook County located?

Cook County is located at 15900 South Cicero Avenue, Oak Forest, IL 60452. The listed phone number is (708) 633-3400.

What is Cook County's specialty?

The primary specialty registered for this NPI is General Acute Care Hospital with taxonomy code 282N00000X.

Is Cook County enrolled in Medicare?

Yes. Cook County is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Cook County?

According to the CMS Revalidation Reassignment List (October 2026 release), 1,043 clinicians in 58 Medicare specialties reassign their Medicare billing to Cook County. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. The largest specialties are Internal Medicine (128), Nurse Practitioner (86) and Pediatric Medicine (80). Of these, 49 practice within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Cook County was last updated on July 14, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.