Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Marietta R Caiarelli, FNP

Individual provider Family Nurse Practitioner · NPI 1891993481

Marietta R Caiarelli, FNP is a Nurse Practitioner in Saint Louis, Missouri. Qualified in 1996, 30 years ago. Practices with Emergency Physicians of St Lukes LLC, a 64-clinician group and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
30
Licensed in
MO
In the registry since
2007
What do these letters mean?
FNP — Family Nurse Practitioner
A nurse practitioner who treats patients of all ages, much like a family doctor.

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Practice location Address checks out

3646 Fairview Ave
Saint Louis, MO 63116-4747 Not confirmed with CMS for 17 years — call before visiting
Phone: (314) 664-5565
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence 142745 (MO)

Record details

NPI number1891993481
Entity typeIndividual (Type 1)
GenderFemale
Credentials FNP
Sole proprietorNo
NPI enumeratedJuly 5, 2007
Last updated in NPPESMay 12, 2009

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 1996 (30 years in practice)
Group practice Emergency Physicians Of St Lukes Llc — 64 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations8 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients188
Services billed 206 a service is one billed item, such as a visit, a test or a procedure
Average patient age77

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Emergency Physicians of St Lukes LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 64 clinicians in the practice; 12 are shown here.

Other providers in Saint Louis