Robert F Schaefer Jr., M.D.

Primary specialty

Pain Medicine (Anesthesiology) PhysicianTaxonomy code 207LP2900X

License

R3K50 Issued in MO

Practice address

17050 Baxter Rd
Chesterfield Surgery Center, LLC, Suite 110
Chesterfield, MO 63005-1422

Phone

(636) 537-0122

Fax

(636) 537-0480

NPI assigned

Jun 22, 2005

Last updated

Jul 13, 2026By the provider in NPPES

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

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, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Western Anesthesiology Associates, Inc.

  dba Western Anesthesiology Pain Management

  • Anesthesiology Physician
  • Saint Louis, MO
  • NPI 1275646754

  Pain Medicine

  Medicare reassignment NPD

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

{
    "created_epoch": "1119398400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1396741666",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "351 CONSORT DR",
            "city": "BALLWIN",
            "state": "MO",
            "postal_code": "630114439",
            "telephone_number": "636-386-7246"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "17050 BAXTER RD",
            "address_2": "CHESTERFIELD SURGERY CENTER, LLC, SUITE 110",
            "city": "CHESTERFIELD",
            "state": "MO",
            "postal_code": "630051422",
            "telephone_number": "636-537-0122",
            "fax_number": "636-537-0480"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SCHAEFER",
        "first_name": "ROBERT",
        "middle_name": "F",
        "name_prefix": "Dr.",
        "name_suffix": "Jr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-06-22",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207LP2900X",
            "taxonomy_group": "",
            "desc": "Anesthesiology, Pain Medicine",
            "state": "MO",
            "license": "R3K50",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Ibrahim Osama Sayed-Ahmed, MD MS
• Elizabeth A Sayers, PA-C
• Joseph Scerba, PA
• Kristin N Schaaf
• Mary Jill Schaberg, CRNA
• Scott Bryan Schaeffer, PHD
• Marissa Ann Schaeuble, PT
• Richard Jay Schainker, DDS
• Bradley Schammel, RPH
• Shirley M Schaper, MSW LCSW

• Pain Medicine (Anesthesiology) Physician in Chesterfield, MO
• Providers in Chesterfield, MO by specialty
• Pain Medicine (Anesthesiology) Physician in Missouri

• 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.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.