TIMOTHY J GUERNSEY
NPI 1063052918
Nurse Anesthetist, Certified Registered in Bridgeton, MO

Q: What is Timothy Guernsey's NPI number?

The NPI number for Timothy Guernsey is 1063052918. It was assigned to this individual provider in the NPPES registry on January 8, 2020.

Q: What is Timothy Guernsey's specialty?

The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.

Q: When was this NPI record last updated?

The NPPES record for Timothy Guernsey was last updated on November 17, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since January 08, 2020PECOS EnrolledAccepts Medicare Assignment

12303 DE PAUL DR, BRIDGETON, MO 63044(314) 344-6000 Get Directions Write a Review

NPPES record last updated: November 17, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Nov 17, 2025, Jan 8, 2020 (2 updates tracked since 2020).

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About Timothy J Guernsey NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

TIMOTHY J GUERNSEY (NPI 1063052918) is an individual nurse anesthetist, certified registered in Bridgeton, Missouri, licensed in Missouri (2019045630) and active in the NPI registry since January 2020. He is enrolled in Medicare PECOS, is affiliated with Hshs St Elizabeth's Hospital, and is a graduate of Other (2019).

NPPES Registry Identity

NPI1063052918

Entity TypeIndividualMale

Primary Taxonomy367500000X

Provider Legal NameTIMOTHY J GUERNSEY

Location Address12303 DE PAUL DRBridgeton, MO 63044-2512

Mailing Address400 S Woods Mill Rd Ste 140Chesterfield, MO 63017-3427 · (314) 485-1101 · Fax (314) 485-1104

Phone(314) 344-6000

Sole ProprietorNo

Medical School CMSOtherGraduated 2019

Enumeration DateJanuary 8, 2020

Last NPPES UpdateNovember 17, 20252 updates tracked since enumeration

NPPES CertifiedNovember 17, 2025

✔ NPI 1063052918 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Anesthetist, Certified RegisteredPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code367500000X

Licenses✔ Licensed in MO · 2019045630✔ Licensed in IL · 209031792

Definition

(1) A licensed registered nurse with advanced specialty education in anesthesia who, in collaboration with appropriate health care professionals, provides preoperative, intraoperative, and postoperative care to patients and assists in management and resuscitation of critical patients in intensive care, coronary care, and emergency situations. Nurse anesthetists are certified following successful completion of credentials and state licensure review and a national examination directed by the Council on Certification of Nurse Anesthetists. (2) A registered nurse who is qualified by special training to administer anesthesia in collaboration with a physician or dentist and who can assist in the care of patients who are in critical condition.

12303 DE PAUL DR, Bridgeton, MO 63044

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Timothy J Guernsey is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID2062848831

PECOS Enrollment IDI20200214001915, I20251110000797

Eligible to Order & Refer✔ Part B Labs & Imaging– Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Timothy Guernsey reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Metro-West Anesthesia Group Inc

7.0 mi

Anesthesiology

400 S WOODS MILL RD, STE 140
Chesterfield, MO 63017

Reassigned Medicare billing, Missouri enrollment
221 clinicians in this Medicare group

NPI 1245427335 (314) 485-1101

Missouri Baptist Medical Center

7.9 mi

Anesthesiology

3015 N BALLAS RD
Saint Louis, MO 63131

Reassigned Medicare billing, Missouri enrollment
102 clinicians in this Medicare group

NPI 1609658905 (314) 996-5000

North American Partners In Anesthesia (illinois), LLC

258 mi

Anesthesiology

3 ERIE CT
Oak Park, IL 60302

Reassigned Medicare billing, Illinois enrollment
826 clinicians in this Medicare group

NPI 1699032524 (315) 413-5229

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 6

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope 00731

This procedure involves the use of an endoscope, a flexible tube with a light and camera, to examine your esophagus, stomach, or upper small bowel. Anesthesia ensures you are comfortable and pain-free during the procedure.

33 services32 patients

Anesthesia for other procedure on large bowel using an endoscope 00811

Anesthesia for an endoscopic procedure on the large bowel ensures comfort and relaxation during the procedure. You'll be given medication to make you drowsy or asleep, eliminating any discomfort. The medication can be administered through a vein or inhaled.

18 services18 patients

Anesthesia for procedure on gallbladder, pancreas, or liver using an endoscope 00732

This procedure involves using an endoscope, a flexible tube with a light and camera, to examine or treat your gallbladder, pancreas, or liver. Anesthesia is administered to ensure you're comfortable and pain-free during the procedure.

15 services15 patients

Anesthesia for procedure to assess heart electrical activity 00537

Anesthesia for a procedure to assess heart electrical activity helps ensure comfort and relaxation. It involves administering medication that either numbs a specific area or makes you sleep temporarily. This allows doctors to safely examine your heart's electrical signals without causing discomfort.

14 services14 patients

Anesthesia for x-ray on artery of brain, heart, or chest 01926

Anesthesia is given before an x-ray of the brain, heart, or chest artery to ensure comfort and stillness. It helps to eliminate discomfort or pain during the procedure. It's administered by a trained professional, ensuring a safe and smooth procedure.

14 services14 patients

Insertion of artery tube for blood sampling or infusion through skin 36620

This procedure involves placing a small tube into an artery, usually in the wrist or elbow, to collect blood samples or administer medication. It's done under local anesthesia and is a common, safe practice.

13 services13 patients

Hospital Affiliations CMS Care Compare 4

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Hshs St Elizabeth's Hospital

Acute Care Hospitals · O Fallon, IL

4/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number140187

LocationOne St Elizabeth BoulevardO Fallon, IL 62269 · St. Clair County

Emergency services Birthing friendly

Barnes Jewish Hospital

Acute Care Hospitals · Saint Louis, MO

4/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number260032

LocationOne Barnes-Jewish Hospital PlazaSaint Louis, MO 63110 · St. Louis City County

Emergency services Birthing friendly

Missouri Baptist Medical Center

Acute Care Hospitals · Town And Country, MO

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number260108

Location3015 N Ballas RdTown And Country, MO 63131 · St. Louis County

Emergency services Birthing friendly

Parkland Health Center

Acute Care Hospitals · Farmington, MO

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number260163

Location1101 W LibertyFarmington, MO 63640 · St. Francois County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63044 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$128.28 typical visit price

range $55.65 – $169.38

Typical copayment $32.07 (range $13.91 – $42.34)

Most-billed visit code 99204

Established Patient

$69.50 typical visit price

range $17.76 – $137.92

Typical copayment $17.37 (range $4.44 – $34.48)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ROBERT M FISCHER M.D.

Radiology (Diagnostic Radiology)

12303 DE PAUL DR, RADIOLOGY DEPT
BRIDGETON, MO 63044

St. Louis County (314) 770-9393

REBEKAH CHENG DPT

Physical Therapist