Christopher Jean Knapp, MD, MPH

Primary specialty

Occupational Medicine PhysicianTaxonomy code 2083X0100X

Practice address

2044 Madison Ave
Suite G6
Granite City, IL 62040-4641

Phone

(618) 798-3475

Fax

(618) 798-3475

NPI assigned

Jan 30, 2006

Sex

Male

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Interoperability endpoints

• Direct secure messaging: cknapp@yourcarecommunity.org

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• PC Associates, LLC

  • Primary Care Clinic/Center
  • O'Fallon, IL
  • NPI 1184717019
  NPD (past)

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1138579200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1245201920",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "26 CARLYLE PLAZA DR",
            "address_2": "PMB 135",
            "city": "BELLEVILLE",
            "state": "IL",
            "postal_code": "622216677",
            "telephone_number": "618-798-3475",
            "fax_number": "618-798-3868"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2044 MADISON AVE",
            "address_2": "SUITE G6",
            "city": "GRANITE CITY",
            "state": "IL",
            "postal_code": "620404641",
            "telephone_number": "618-798-3475",
            "fax_number": "618-798-3475"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "KNAPP",
        "first_name": "CHRISTOPHER",
        "middle_name": "JEAN",
        "name_prefix": "Dr.",
        "credential": "MD, MPH",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-01-30",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2083X0100X",
            "taxonomy_group": "",
            "desc": "Preventive Medicine, Occupational Medicine",
            "state": "IL",
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Erin Lee King, M.D.
• Stephanie King, FNP-BC
• Terri Lou Klawonn, LCPC
• Mark A Kleindorfer, O.D.
• Kristopher Michael Klint, CRNA
• Kendall Brennan Knobeloch, RN
• Timothy J Knox, PT, CHT
• Ashleigh Ann Kohrmann
• Louise E Komorek, CRNA
• Janae Marie Korte, NP-C

• Occupational Medicine Physician in Granite City, IL
• Providers in Granite City, IL by specialty
• Occupational Medicine Physician in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.