Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

MS. MARIE FLORETTA CRNA
NPI 1336115369
Nurse Anesthetist, Certified Registered in St Louis, MO

Active since February 28, 2006Accepts Medicare Assignment
6420 CLAYTON ROAD, ST LOUIS, MO 63117(314) 768-8442(314) 768-8442 Get Directions Write a Review

NPPES record last updated: July 1, 2026. Verified against the NPPES registry weekly; last sync: July 19, 2026.

About Ms. Marie Floretta Crna NPPES

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

MS. MARIE FLORETTA CRNA (NPI 1336115369) is an individual nurse anesthetist, certified registered in St Louis, Missouri, licensed in Missouri (121731) and active in the NPI registry since February 2006. She is affiliated with Ssm St Clare Health Center, maintains a secondary practice location in Chesterfield, and is a graduate of Other (1996).

NPPES Registry Identity

NPI1336115369
Entity TypeIndividualFemale
Primary Taxonomy367500000X
Provider Legal NameMS. MARIE FLORETTACredential: CRNA
Location Address6420 CLAYTON ROADSt Louis, MO 63117-1811
Mailing Address6420 Clayton RoadSt Louis, MO 63117-1811 · (314) 768-8442 · Fax (314) 768-8918
Fax(314) 768-8442
Sole ProprietorNo
Medical School CMSOtherGraduated 1996
Enumeration DateFebruary 28, 2006
Last NPPES UpdateJuly 1, 2026
NPPES CertifiedJuly 1, 2026
NPI 1336115369 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 · 121731
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.

6420 CLAYTON ROAD, St Louis, MO 63117

Other Names 1

Other Name (5)Ms. Marie Leritz Crna

Secondary Practice Location 1

Location 117298 N Outer 40 Rd Ste 200Chesterfield, MO 63005-1456 · Phone (314) 529-4900 · Fax (314) 434-2679

Other Identifiers 3

Medicaid493840807IL
OtherP00449515MO · Rr Medicare
Medicaid918649237MO

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Ms. Marie Floretta Crna 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 ID3870571607
PECOS Enrollment IDI20040709000058

Areas of Expertise CMS Part B claims 3

Services this provider delivered to Medicare fee-for-service patients, from the 2024 & 2026 CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Anesthesia for exam of colon using an endoscope 00812
Anesthesia for a colon examination with an endoscope is a method used to ensure comfort during the procedure. It involves administering medication to help you relax or sleep, thus reducing discomfort as the endoscope, a thin, flexible tube, is navigated through your colon.
67 services67 patients
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.
21 services21 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.
11 services11 patients

Hospital Affiliations CMS Care Compare

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63117 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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

Reported Quality Measures

Pre-operative OSA assessment
Percentage of patients who undergo a surgical procedure in the operating room/procedure room that have a pre-operative assessment for Obstructive Sleep Apnea (OSA)
100%123 patients5/55-star benchmark: 100%
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

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.

Anesthesiology
6420 CLAYTON ROAD
ST LOUIS, MO 63117
Anesthesiology
6420 CLAYTON ROAD
ST LOUIS, MO 63117
Nurse Anesthetist, Certified Registered
6420 CLAYTON ROAD
ST LOUIS, MO 63117
Anesthesiology
6420 CLAYTON ROAD
ST LOUIS, MO 63117
Internal Medicine
6420 CLAYTON ROAD
ST LOUIS, MO 63117
Internal Medicine
6420 CLAYTON ROAD, SSM ST MARYS HEALTH CENTER/ DEPT OF INTERNAL MEDICINE
ST LOUIS, MO 63117
Student in an Organized Health Care Education/Training Program
6420 CLAYTON ROAD, ST MARY'S HEALTH CENTER
ST LOUIS, MO 63117
Internal Medicine
6420 CLAYTON ROAD, ST.MARY'S HEALTH CENTER,DEPARTMENT OF INTERNAL MEDICINE
SAINT LOUIS, MO 63117

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1336115369, enumerated as an "individual" on February 28, 2006.

The provider is located at 6420 CLAYTON ROAD ST LOUIS, MO 63117 and the phone number is (314) 768-8442.

Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.

The provider might be accepting Accepts: Medicare, Medicaid and Railroad Medicare. Please consult your insurance carrier or call the provider to verify.

Marie Floretta is affiliated with: SSM ST CLARE HEALTH CENTER.