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THOMAS J RUZISKA
NPI 1700629540
Nurse Anesthetist, Certified Registered in Chesterfield, MO

Active since June 18, 2024Accepts Medicare Assignment
400 S WOODS MILL RD STE 140, CHESTERFIELD, MO 63017(314) 485-1101 Get Directions Write a Review

NPPES record last updated: June 18, 2024. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Thomas J Ruziska NPPES

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

THOMAS J RUZISKA (NPI 1700629540) is an individual nurse anesthetist, certified registered in Chesterfield, Missouri, licensed in Missouri (2024022665) and active in the NPI registry since June 2024. He is affiliated with Ssm St Clare Health Center and is a graduate of Other (2024).

NPPES Registry Identity

NPI1700629540
Entity TypeIndividualMale
Primary Taxonomy367500000X
Provider Legal NameTHOMAS J RUZISKA
Location Address400 S WOODS MILL RD STE 140Chesterfield, MO 63017-3427
Mailing Address400 S Woods Mill Rd Ste 140Chesterfield, MO 63017-3427 · (314) 485-1101
Phone(314) 485-1101
Sole ProprietorNo
Medical School CMSOtherGraduated 2024
Enumeration DateJune 18, 2024
NPPES CertifiedJune 18, 2024
✔ NPI 1700629540 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
License✔ Licensed in MO · 2024022665
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.
400 S WOODS MILL RD STE 140, Chesterfield, MO 63017
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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

Thomas J Ruziska 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 ID7719423227
PECOS Enrollment IDI20240720000238

Medicare Billing Reassignments

2

Medicare enrollment records show Thomas Ruziska reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Acuity Anesthesiology LLC
33 mi
Anesthesiology
1400 US HIGHWAY 61
Festus, MO 63028
  • Reassigned Medicare billing, Missouri enrollment
  • 31 clinicians in this Medicare group
NPI 1134353030 (314) 548-4739
Orthomed Staffing LLC
530 mi
Anesthesiology
15305 DALLAS PKWY STE 900
Addison, TX 75001
  • Reassigned Medicare billing, Missouri enrollment
  • 175 clinicians in this Medicare group
NPI 1225514276 (469) 863-9978

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

Hospital Affiliations CMS Care Compare 2

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

Ssm St Clare Health Center

Acute Care Hospitals · Fenton, MO
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260081
Location1015 BowlesFenton, MO 63026 · Jefferson County
Emergency services Birthing friendly

Ssm Health St Mary's Hospital - St Louis

Acute Care Hospitals · Richmond Heights, MO
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260091
Location6420 Clayton RdRichmond Heights, MO 63117 · St. Louis County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63017 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.

CAROLYN M HANSON
Nurse Anesthetist, Certified Registered
400 S WOODS MILL RD STE 140
CHESTERFIELD, MO 63017
St. Louis County (314) 485-1101
MEGAN C ARMSTRONG CRNA
Nurse Anesthetist, Certified Registered
400 S WOODS MILL RD STE 140
CHESTERFIELD, MO 63017
St. Louis County (314) 485-1101
HEIDI J ORTYN
Nurse Anesthetist, Certified Registered
400 S WOODS MILL RD STE 140
CHESTERFIELD, MO 63017
St. Louis County (314) 485-1101
JORDAN LANE MARKEL MD
Anesthesiology
400 S WOODS MILL RD STE 140
CHESTERFIELD, MO 63017
St. Louis County (314) 485-1101
MACKENZIE A LEE CRNA
Nurse Anesthetist, Certified Registered
400 S WOODS MILL RD STE 140
CHESTERFIELD, MO 63017
St. Louis County (314) 485-1101
MISS KRISTEN ELAINE MATTSON BSN, RN, SRNA
Nurse Anesthetist, Certified Registered
400 S WOODS MILL RD STE 140
CHESTERFIELD, MO 63017
St. Louis County (314) 485-1101
SYDNEY JALEA NASEMAN
Nurse Anesthetist, Certified Registered
400 S WOODS MILL RD STE 140
CHESTERFIELD, MO 63017
St. Louis County (314) 485-1101
BAILEY E STEIN
Nurse Anesthetist, Certified Registered
400 S WOODS MILL RD STE 140
CHESTERFIELD, MO 63017
St. Louis County (314) 485-1101

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Thomas Ruziska's NPI number?

The NPI number for Thomas Ruziska is 1700629540. It was assigned to this individual provider in the NPPES registry on June 18, 2024.

Where is Thomas Ruziska located?

Thomas Ruziska practices at 400 S Woods Mill Rd Ste 140, Chesterfield, MO 63017. The listed phone number is (314) 485-1101.

What is Thomas Ruziska's specialty?

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

Is Thomas Ruziska enrolled in Medicare?

Yes. Thomas Ruziska is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Thomas Ruziska's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Thomas Ruziska reassigns Medicare benefits to 2 organizations: Acuity Anesthesiology LLC (Festus, MO) and Orthomed Staffing LLC (Addison, TX). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Thomas Ruziska's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Thomas Ruziska affiliated with any hospitals?

According to CMS data, Thomas Ruziska is affiliated with Ssm St Clare Health Center and Ssm Health St Mary's Hospital - St Louis.

When was this NPI record last updated?

The NPPES record for Thomas Ruziska was last updated on June 18, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years 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.