William Allen Cass, M.D.

Primary specialty

Anesthesiology PhysicianTaxonomy code 207L00000X

License

2005025929 Issued in MO

Practice address

1600 E Broadway
Columbia, MO 65201-5844

Phone

(573) 815-8000

NPI assigned

Dec 20, 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

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

Anesthesiology

Education

Other, 1989

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Mid-America Anesthesia Consultants PCGroup PAC ID 6305837626, 49 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Boone Hospital Center Hospital, Columbia, MO, CCN 260068

Merit-based Incentive Payment System (MIPS)

Final score

88.1 of 100Reported as group

Promoting interoperability

86

Improvement activities

40

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

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.

• Mid-America Anesthesia Consultants, PC

  • Anesthesiology Physician
  • Columbia, MO
  • NPI 1083728463
  Medicare reassignment Care Compare group NPD
• Columbia Orthopaedic Group, LLP

  • Orthopaedic Surgery Physician
  • Columbia, MO
  • NPI 1851392542
  Medicare reassignment NPD
• Orthomed Staffing LLC

  • Anesthesiology Physician
  • Addison, TX
  • NPI 1225514276

  MO

  Medicare reassignment NPD
• Columbia Orthopaedic Group, LLP

  • Durable Medical Equipment & Medical Supplies
  • Osage Beach, MO
  • NPI 1942986484
  NPD
• Mid-America Anesthesia Services, LLC

  • Anesthesiology Physician
  • Columbia, MO
  • NPI 1801161898
  NPD (past)

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

• CH Allied Services, Inc

  • Cardiac Rehabilitation Clinic/Center
  • Columbia, MO
  • NPI 1548734734

  Hospital

  Care Compare affiliation
• CH Allied Services, Inc.

  • General Acute Care Hospital
  • Columbia, MO
  • NPI 1902817844
  Care Compare affiliation

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

{
    "created_epoch": "1166572800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1784592000000",
    "number": "1710041207",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 843966",
            "city": "KANSAS CITY",
            "state": "MO",
            "postal_code": "641843966",
            "telephone_number": "573-884-3300",
            "fax_number": "573-884-0943"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1600 E BROADWAY",
            "city": "COLUMBIA",
            "state": "MO",
            "postal_code": "652015844",
            "telephone_number": "573-815-8000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1 Hospital Dr",
            "address_purpose": "LOCATION",
            "city": "Columbia",
            "state": "MO",
            "postal_code": "652015276",
            "country_code": "US",
            "telephone_number": "573-882-2568",
            "fax_number": "855-903-0985",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "CASS",
        "first_name": "WILLIAM",
        "middle_name": "ALLEN",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-12-20",
        "last_updated": "2026-07-21",
        "certification_date": "2026-07-21",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "MO",
            "license": "2005025929",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Jade Casey, RPH
• Jessica Casey, RRT
• Tyler Patrick Casey, MD
• Andrew L Cash
• Ricardo Michael Cason Jr., LAT, ATC
• John W Cassels Jr., MD
• Caitlyn Marie Cassimatis, MD
• Christopher Castelow, MD
• Benjamin Warren Casterline, MD
• Gamal El-Dine Castile

• Anesthesiology Physician in Columbia, MO
• Providers in Columbia, MO by specialty
• Anesthesiology Physician in Missouri

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 21, 2026; 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.