David Alan Janssen, M.D.

Primary specialty

Infectious Disease PhysicianTaxonomy code 207RI0200X

License

208810309 Issued in MO

Practice address

20 Progress Point Pkwy Ste 206
O Fallon, MO 63368-2207

Phone

(636) 344-2014

Fax

(314) 747-1476

NPI assigned

Aug 29, 2006

Sex

Male

Sole proprietor

No

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

Specialties & licenses 3

Addresses

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in MO, IL2 enrollments

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 2

Specialty

Infectious Disease

Education

Indiana University School of Medicine, 1988

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Fairview Heights Medical Group SCGroup PAC ID 6800784083, 448 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Parkland Health Center Hospital, Farmington, MO, CCN 260163
• Progress West Hospital Hospital, Ofallon, MO, CCN 260219
• Memorial Hospital Hospital, Belleville, IL, CCN 140185

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• FHIR API: https://epicproxy.et0965.epichosted.com/FHIRProxy/api/FHIR/DSTU2/

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

• Fairview Heights Medical Group SC

  • Multi-Specialty Clinic/Center
  • Saint Louis, MO
  • NPI 1679503668

  IL

  Medicare reassignment Care Compare group NPD
• Parkland Health Center

  • General Practice Physician
  • Farmington, MO
  • NPI 1922016112
  Medicare reassignment NPD
• Fairview Heights Medical Group SC

  • Multi-Specialty Clinic/Center
  • Saint Louis, MO
  • NPI 1073022000
  NPD
• Parkland Health Center

  • Rural Health Clinic/Center
  • Farmington, MO
  • NPI 1427806413
  NPD
• Parkland Health Center

  • Clinical Medical Laboratory
  • Farmington, MO
  • NPI 1891303053
  NPD (past)

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Parkland Health Center

  • General Acute Care Hospital
  • Farmington, MO
  • NPI 1003824061
  Care Compare affiliation
• Parkland Health Center

  • Psychiatric Hospital Unit
  • Farmington, MO
  • NPI 1902814866
  Care Compare affiliation
• Progress West Healthcare Center

  • General Acute Care Hospital
  • O Fallon, MO
  • NPI 1508938044
  Care Compare affiliation
• Protestant Memorial Medical Center, Inc.

  • General Acute Care Hospital
  • Belleville, IL
  • NPI 1982796181
  Care Compare affiliation

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

{
    "created_epoch": "1156809600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1761004800000",
    "number": "1700995339",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "20 PROGRESS POINT PKWY STE 206",
            "city": "O FALLON",
            "state": "MO",
            "postal_code": "633682207",
            "telephone_number": "636-344-2014",
            "fax_number": "314-747-1476"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "20 PROGRESS POINT PKWY STE 206",
            "city": "O FALLON",
            "state": "MO",
            "postal_code": "633682207",
            "telephone_number": "636-344-2014",
            "fax_number": "314-747-1476"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "621 S. New Ballas Road",
            "address_2": "Suite 70 Tower B",
            "address_purpose": "LOCATION",
            "city": "St. Louis",
            "state": "MO",
            "postal_code": "63141",
            "country_code": "US",
            "telephone_number": "314-251-5700",
            "fax_number": "314-251-5703",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "JANSSEN",
        "first_name": "DAVID",
        "middle_name": "ALAN",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-08-29",
        "last_updated": "2025-10-21",
        "certification_date": "2025-10-21",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RI0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Infectious Disease",
            "state": "MO",
            "license": "208810309",
            "primary": true
        },
        {
            "code": "174400000X",
            "taxonomy_group": "",
            "desc": "Specialist",
            "state": "MO",
            "license": "103905",
            "primary": false
        },
        {
            "code": "207RI0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Infectious Disease",
            "state": "IL",
            "license": "036176531",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://epicproxy.et0965.epichosted.com/FHIRProxy/api/FHIR/DSTU2/",
            "affiliation": "N",
            "endpointDescription": "BJC",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "contentType": "CSV",
            "contentTypeDescription": "CSV",
            "address_1": "20 Progress Point Pkwy Ste 206",
            "city": "O Fallon",
            "state": "MO",
            "country_code": "US",
            "postal_code": "633682207",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

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• Infectious Disease Physician in O Fallon, MO
• Providers in O Fallon, MO by specialty
• Infectious Disease Physician in Missouri

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 21, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.