Timothy J Guernsey

Primary specialty

Certified Registered Nurse AnesthetistTaxonomy code 367500000X

License

2019045630 Issued in MO

Practice address

12303 De Paul Dr
Bridgeton, MO 63044-2512

Phone

(314) 344-6000

NPI assigned

Jan 8, 2020

Last updated

Nov 17, 2025By 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 2

Addresses

Medicare fee-for-service enrollment

Enrolled in MO, IL2 enrollments

Enrollment records 2

Specialty

Certified Registered Nurse Anesthetist (Crna)

Education

Other, 2019

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

North American Partners in Anesthesia Illinois LLCGroup PAC ID 1052576519, 431 clinicians

Missouri Baptist Medical CenterGroup PAC ID 3476461955, 123 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Missouri Baptist Medical Center Hospital, Saint Louis, MO, CCN 260108
• HSHS St Elizabeth's Hospital Hospital, O Fallon, IL, CCN 140187
• Barnes Jewish Hospital Hospital, Saint Louis, MO, CCN 260032
• Parkland Health Center Hospital, Farmington, MO, CCN 260163

Medicare enrollment (NPD)

Enrolled

Credentials

Certified Registered Nurse

State licenses

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.

• Missouri Baptist Medical Center

  • Anesthesiology Physician
  • Saint Louis, MO
  • NPI 1609658905

  Nurse Anesthetist, Certified Registered

  Medicare reassignment Care Compare group NPD
• North American Partners in Anesthesia (Illinois), LLC

  • Anesthesiology Physician
  • Oak Park, IL
  • NPI 1699032524
  Medicare reassignment Care Compare group NPD
• Metro-West Anesthesia Group Inc

  • Anesthesiology Physician
  • Chesterfield, MO
  • NPI 1245427335

  Nurse Anesthetist, Certified Registered

  Medicare reassignment NPD
• Mid-West Anesthesia Partners, LLC

  • Anesthesiology Physician
  • Chesterfield, MO
  • NPI 1851254304
  NPD

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
• Parkland Health Center

  dba Parkland Health Center - Farmington

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

  dba Parkland Health Center - Farmington

  • Psychiatric Hospital Unit
  • Farmington, MO
  • NPI 1902814866
  Care Compare affiliation
• St Elizabeths Hospital of the Hospital Sisters of the Third Order

  dba HSHS St. Elizabeth's Hospital

  • General Acute Care Hospital
  • O'Fallon, IL
  • NPI 1629057302
  Care Compare affiliation

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

{
    "created_epoch": "1578441600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1763337600000",
    "number": "1063052918",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "400 S WOODS MILL RD STE 140",
            "city": "CHESTERFIELD",
            "state": "MO",
            "postal_code": "630173427",
            "telephone_number": "314-485-1101",
            "fax_number": "314-485-1104"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "12303 DE PAUL DR",
            "city": "BRIDGETON",
            "state": "MO",
            "postal_code": "630442512",
            "telephone_number": "314-344-6000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "GUERNSEY",
        "first_name": "TIMOTHY",
        "middle_name": "J",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2020-01-08",
        "last_updated": "2025-11-17",
        "certification_date": "2025-11-17",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "367500000X",
            "taxonomy_group": "",
            "desc": "Nurse Anesthetist, Certified Registered",
            "state": "MO",
            "license": "2019045630",
            "primary": true
        },
        {
            "code": "367500000X",
            "taxonomy_group": "",
            "desc": "Nurse Anesthetist, Certified Registered",
            "state": "IL",
            "license": "209031792",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Harley M Griffith, DPM
• Joshua Griner, MD
• Courtney C Grodie, PA
• Maggie Lynn Groshong, MOT, OTR/L
• Guardian Angel Healthcare I
• John Alexander Guiliano, PT
• Morgan Ashleigh Gumper
• Nicole Gundersen
• Michael Wayne Gunter
• Abigail Katherine Gutmann, MSW

• Certified Registered Nurse Anesthetist in Bridgeton, MO
• Providers in Bridgeton, MO by specialty
• Certified Registered Nurse Anesthetist in Missouri

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