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OCCUPATIONAL HEALTH SERVICE INSTITUTE (OHSI)
NPI 1043727571
Preventive Medicine - Occupational Medicine in Chicago, IL

Active since January 05, 2018
835 S. WOLCOTT, SUITE E-144; MC 684, CHICAGO, IL 60612(312) 996-7420(312) 413-8485 Get Directions Write a Review

NPPES record last updated: July 11, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jul 11, 2023, Mar 31, 2023 (2 updates tracked since 2023).

About Occupational Health Service Institute (ohsi) NPPES

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

OCCUPATIONAL HEALTH SERVICE INSTITUTE (OHSI) (NPI 1043727571) is a healthcare organization registered as an occupational medicine in Chicago, Illinois and active in the NPI registry since January 2018. The organization lists Daniel A Bakston, Interim Director, as its authorized official.

NPPES Registry Identity

NPI1043727571
Entity TypeOrganization
Primary Taxonomy2083X0100X
Legal Business NameTHE BOARD OF TRUSTEES OF THE UNIVERSITY OF ILLINOIS
Location Address835 S. WOLCOTT, SUITE E-144; MC 684Chicago, IL 60612
Mailing Address7732 Solutions CenterChicago, IL 60677-7007 · (312) 413-0369 · Fax (312) 413-8485
Phone(312) 996-7420
Fax(312) 413-8485
Organization SubpartNo
Authorized OfficialDaniel A BakstonInterim Director · (312) 355-3554
Enumeration DateJanuary 5, 2018
Last NPPES UpdateJuly 11, 20232 updates tracked since enumeration
NPPES CertifiedJuly 11, 2023
✔ NPI 1043727571 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPreventive Medicine · Occupational MedicineAllopathic & Osteopathic Physicians
Taxonomy Code2083X0100X
Definition
Occupational medicine focuses on the health of workers, including the ability to perform work; the physical, chemical, biological, and social environments of the workplace; and the health outcomes of environmental exposures. Practitioners in this field address the promotion of health in the work place, and the prevention and management of occupational and environmental injury, illness, and disability.
Also ListedClinic/Center · Multi-SpecialtyTaxonomy 261QM1300X
835 S. WOLCOTT, Chicago, IL 60612
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Other Names 1

Doing Business AsOccupational Health Service Institute (ohsi)

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Occupational Health Service Institute (ohsi) is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

2,107

Medicare enrollment records show 2,107 clinicians reassign Medicare billing to Occupational Health Service Institute (ohsi), which bills Medicare for the services they deliver. Of these, 6 practice at this address and 1,202 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 71

Nurse Practitioner289
Pediatric Medicine250
Internal Medicine153
Family Practice108
Emergency Medicine96
Anesthesiology94
Ophthalmology94
Diagnostic Radiology70
63 other specialties953

Nearest to this location (20)

See all 2,107
Amir El Shami, M.D.
Physical Medicine and Rehabilitation
NPI 1487841185
835 S WOLCOTT AVE RM E-270 UIC DEPT OF ORTHOPAEDICS
Chicago, IL 60612
(312) 996-7161
✔ PECOS✔ Accepts MedicareSame address
Benjamin Goldberg, M.D.
Orthopedic Surgery
NPI 1518917046
835 S WOLCOTT AVE M/C 844
Chicago, IL 60612
(312) 996-7161
✔ PECOS✔ Accepts MedicareSame address
Joseph Karam, M.D.
Orthopedic Surgery
NPI 1174866917
835 S WOLCOTT AVE ROOM E-270
Chicago, IL 60612
(312) 996-9858
✔ PECOS✔ Accepts MedicareSame address
Adekunbi Lucas, APRN, FNP
Nurse Practitioner
NPI 1679027247
835 S WOLCOTT AVE ROOM E-270
Chicago, IL 60612
(312) 996-5197
✔ PECOSSame address
Deepshikha Garg, MD
Internal Medicine
NPI 1598149965
1900 W POLK ST FL 5
Chicago, IL 60612
(312) 864-4777
✔ PECOS✔ Accepts MedicareSame address
Mahari Kelly, APRN
Nurse Practitioner
NPI 1821552464
818 S WOLCOTT AVE STE 802
Chicago, IL 60612
(312) 996-4656
✔ PECOSSame address
Vanessa Davis, MD
Pediatric Medicine
NPI 1982856118
1900 W POLK ST C/O DR DAVID SOGLIN,SUITE 1100
Chicago, IL 60612
(312) 864-4506
✔ PECOS0.1 mi
David Allison, D.O.
Pathology
NPI 1891921235
840 S WOOD ST STE 130
Chicago, IL 60612
(312) 493-5605
✔ PECOS✔ Accepts Medicare0.1 mi
Gerald Gantt
Colorectal Surgery (Proctology)
NPI 1386962207
840 S WOOD ST STE 518E
Chicago, IL 60612
(312) 996-2061
✔ PECOS✔ Accepts Medicare0.1 mi
Stephanie Toth-Manikowski, M.D.
Nephrology
NPI 1558650697
820 S WOOD ST # MC793
Chicago, IL 60612
(312) 996-6736
✔ PECOS✔ Accepts Medicare0.1 mi
Cemal Yazici, MD
Gastroenterology
NPI 1295039865
840 S WOOD STREET SUITE 718E
Chicago, IL 60612
(312) 996-7000
✔ PECOS✔ Accepts Medicare0.1 mi
Jeffrey Jacobson, M.D.
Pulmonary Disease
NPI 1609937432
909 SOUTH WOLCOTT AVENUE 3141 COMRB
Chicago, IL 60612
(312) 996-8039
✔ PECOS✔ Accepts Medicare0.1 mi
Audrey French, MD
Infectious Disease
NPI 1679598999
1900 W POLK ST RM 1243
Chicago, IL 60612
(312) 864-4578
✔ PECOS✔ Accepts Medicare0.1 mi
Peter Orris, M.D.
Internal Medicine
NPI 1952326746
1900 W POLK ST SUITE 500
Chicago, IL 60612
(312) 884-5550
✔ PECOS✔ Accepts Medicare0.1 mi
Lauren Smith, M.D.
Emergency Medicine
NPI 1265539043
1900 W POLK ST 10TH FLR
Chicago, IL 60612
(312) 864-0065
✔ PECOS✔ Accepts Medicare0.1 mi
Dan Mihailescu, MD
Endocrinology
NPI 1104951250
1819 W POLK ST SECTION OF ENDOCRINOLOGY (MC 640)
Chicago, IL 60612
(312) 996-6062
✔ PECOS✔ Accepts Medicare0.1 mi
Michelle Bain, M.D.
Dermatology
NPI 1548377252
808 S WOOD ST RM 376
Chicago, IL 60612
(312) 996-6966
✔ PECOS✔ Accepts Medicare0.1 mi
Christine Horne, APN
Nurse Practitioner
NPI 1942755368
840 S WOOD ST # MC856
Chicago, IL 60612
(312) 355-1082
✔ PECOS✔ Accepts Medicare0.1 mi
Igor Altman, D.O.
Family Practice
NPI 1063659928
840 S WOOD ST # MC958 UIMC -- VASCULAR SURGERY DIVISION
Chicago, IL 60612
(312) 996-8459
✔ PECOS✔ Accepts Medicare0.1 mi
Oana Danciu, M.D.
Hematology/Oncology
NPI 1043409394
840 S WOOD ST MC-713
Chicago, IL 60612
(312) 996-1581
✔ PECOS✔ Accepts Medicare0.1 mi
See all 2,107 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 The Board Of Trustees Of The University Of Illinois's NPI number?

The NPI number for The Board Of Trustees Of The University Of Illinois is 1043727571. It was assigned to this organization in the NPPES registry on January 5, 2018. The provider is doing business as Occupational Health Service Institute (ohsi).

Where is The Board Of Trustees Of The University Of Illinois located?

The Board Of Trustees Of The University Of Illinois is located at 835 S. Wolcott Suite E-144; Mc 684, Chicago, IL 60612. The listed phone number is (312) 996-7420.

What is The Board Of Trustees Of The University Of Illinois's specialty?

The primary specialty registered for this NPI is Preventive Medicine, specializing in Occupational Medicine, with taxonomy code 2083X0100X.

Is The Board Of Trustees Of The University Of Illinois enrolled in Medicare?

Yes. The Board Of Trustees Of The University Of Illinois is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through The Board Of Trustees Of The University Of Illinois?

According to the CMS Revalidation Reassignment List (October 2026 release), 2,107 clinicians in 71 Medicare specialties reassign their Medicare billing to The Board Of Trustees Of The University Of Illinois. 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 Nurse Practitioner (289), Pediatric Medicine (250) and Internal Medicine (153). Of these, 6 practice at this address and 1,202 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 The Board Of Trustees Of The University Of Illinois was last updated on July 11, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.