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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

DR. CHRISTOPHER JEAN KNAPP MD, MPH
NPI 1245201920
Preventive Medicine - Occupational Medicine in Granite City, IL

Active since January 30, 2006
2044 MADISON AVE, SUITE G6, GRANITE CITY, IL 62040(618) 798-3475(618) 798-3475 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Dr. Christopher Jean Knapp Md, Mph NPPES

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

DR. CHRISTOPHER JEAN KNAPP MD, MPH (NPI 1245201920) is an individual occupational medicine provider in Granite City, Illinois and active in the NPI registry since January 2006.

NPPES Registry Identity

NPI1245201920
Entity TypeIndividualMale
Primary Taxonomy2083X0100X
Provider Legal NameDR. CHRISTOPHER JEAN KNAPPCredential: MD, MPH
Location Address2044 MADISON AVE, SUITE G6Granite City, IL 62040-4641
Mailing Address26 Carlyle Plaza Dr, Pmb 135Belleville, IL 62221-6677 · (618) 798-3475 · Fax (618) 798-3868
Phone(618) 798-3475
Fax(618) 798-3475
Sole ProprietorNo
Enumeration DateJanuary 30, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1245201920 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ 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.
2044 MADISON AVE, Granite City, IL 62040
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Other Providers at the Same Location NPPES 17

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

GRANITE CITY ORTHOPEDIC PHYSICIANS COMPANY LLC
Durable Medical Equipment & Medical Supplies
2044 MADISON AVE
GRANITE CITY, IL 62040
Madison County (618) 451-0500
GRANITE CITY PHYSICIANS CORP
Internal Medicine
2044 MADISON AVE, SUITE 15
GRANITE CITY, IL 62040
Madison County (618) 798-8652
DIANE M SCHWIND NP
Nurse Practitioner (Adult Health)
2044 MADISON AVE, SUITE 15
GRANITE CITY, IL 62040
Madison County (618) 451-1500
BIJOY HEGDE MD, PC
Physical Medicine & Rehabilitation
2044 MADISON AVE, SUITE 15
GRANITE CITY, IL 62040
Madison County (618) 451-1500
GRANITE CITY CLINIC CORP
Family Medicine
2044 MADISON AVE, SUITE 27
GRANITE CITY, IL 62040
Madison County (618) 451-7600
LAWRENCE HARMON MD
Internal Medicine
2044 MADISON AVE, SUITE 23
GRANITE CITY, IL 62040
Madison County (618) 451-1500
BIOMEDICAL IMAGING, LLC
Physiological Laboratory
2044 MADISON AVE, SUITE 28
GRANITE CITY, IL 62040
Madison County (618) 877-3225
ABID NISAR
Internal Medicine (Hematology & Oncology)
2044 MADISON AVE, STE 28
GRANITE CITY, IL 62040
Madison County (618) 451-9953

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 Christopher Knapp's NPI number?

The NPI number for Christopher Knapp is 1245201920. It was assigned to this individual provider in the NPPES registry on January 30, 2006.

Where is Christopher Knapp located?

Christopher Knapp practices at 2044 Madison Ave Suite G6, Granite City, IL 62040. The listed phone number is (618) 798-3475.

What is Christopher Knapp's specialty?

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

When was this NPI record last updated?

The NPPES record for Christopher Knapp was last updated on July 13, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.