William Louis Hollabaugh, MD

Primary specialty

Pediatric Sports Medicine PhysicianTaxonomy code 2080S0010X

License

2024016238 Issued in MO

Practice address

20 Progress Point Pkwy
Dept Orthopaedic Surgery, Ste 114
O Fallon, MO 63368-2206

Phone

(314) 514-3500

Fax

(314) 878-7678

NPI assigned

Apr 20, 2018

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

Other identifiers 1

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in MO

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 1

Specialty

Sports MedicineAlso: Pediatric Medicine

Education

Medical College of Wisconsin, 2014

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Washington UniversityGroup PAC ID 9830008770, 2,968 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Missouri Baptist Medical Center Hospital, Saint Louis, MO, CCN 260108
• Barnes Jewish Hospital Hospital, Saint Louis, MO, CCN 260032

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: whollabaugh404931@direct.vumc.org

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.

• Washington University

  • Multi-Specialty Clinic/Center
  • Saint Louis, MO
  • NPI 1679516033
  Medicare reassignment Care Compare group NPD
• Washington University

  • Multi-Specialty Clinic/Center
  • Saint Louis, MO
  • NPI 1962442475
  NPD
• Washington University

  • Multi-Specialty Clinic/Center
  • Saint Louis, MO
  • NPI 1134169568
  NPD (past)

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

• Barnes Jewish Hospital

  • General Acute Care Hospital
  • Saint Louis, MO
  • NPI 1649299827
  Care Compare affiliation
• Missouri Baptist Medical Center

  • General Acute Care Hospital
  • Saint Louis, MO
  • NPI 1487663506
  Care Compare affiliation

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

{
    "created_epoch": "1524182400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1744848000000",
    "number": "1659868040",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 7412011",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606742011",
            "telephone_number": "314-514-3500",
            "fax_number": "314-878-7678"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "20 PROGRESS POINT PKWY",
            "address_2": "DEPT ORTHOPAEDIC SURGERY, STE 114",
            "city": "O FALLON",
            "state": "MO",
            "postal_code": "633682206",
            "telephone_number": "314-514-3500",
            "fax_number": "314-878-7678"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HOLLABAUGH",
        "first_name": "WILLIAM",
        "middle_name": "LOUIS",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2018-04-20",
        "last_updated": "2025-04-17",
        "certification_date": "2022-03-16",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2080S0010X",
            "taxonomy_group": "",
            "desc": "Pediatrics, Sports Medicine",
            "state": "MO",
            "license": "2024016238",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "200148295",
            "state": "MO"
        }
    ],
    "endpoints": [
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://epicproxy.et0965.epichosted.com/FHIRProxy/api/FHIR/DSTU2/",
            "affiliation": "Y",
            "affiliationName": "Washington University",
            "address_1": "20 Progress Point Pkwy",
            "address_2": "Dept Orthopaedic Surgery, Ste 114",
            "city": "O Fallon",
            "state": "MO",
            "country_code": "US",
            "postal_code": "633682206",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Margaret Hoette, MOT OTR L
• Jennifer Lynn Hoff, PHARM D
• Jennifer Hoffmann, MA, PLPC
• Leonard M Hoffmann, M.D.
• Nolan Holcombe
• Samantha Holland, OD
• Robert F Holloway, MD
• Jade Alexandria Holman, FNP
• Patricia Ann Holschen
• Amber Holt, MA, PLPC

• Pediatric Sports Medicine Physician in O Fallon, MO
• Providers in O Fallon, MO by specialty
• Pediatric Sports Medicine Physician in Missouri

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 17, 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.