Marietta R. Caiarelli, FNP
Family Nurse Practitioner · Saint Louis, MO
Marietta R. Caiarelli, FNP is a family nurse practitioner with a practice address in Saint Louis, Missouri, and NPI 1891993481, issued on Jul 5, 2007. Check the license (Missouri 142745, as entered in NPPES) with the Missouri board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Marietta R. Caiarelli
- Credential
- FNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 142745 MO
Self-reported in NPPES; status is on the state search - Practice location
- 3646 Fairview Ave, Saint Louis, MO 63116
- Phone
- (314) 664-5565
- Enumerated
- Jul 5, 2007
- Record last updated
- May 12, 2009 (not updated in 17 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20090403000198); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 5,226 in Missouri → Look up another NPI →
Verify Marietta R. Caiarelli in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Missouri board licenses this profession
Search for license 142745Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average family nurse practitioner in 2024
148 Medicare Part D claims for 121 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims.
Most prescribed
- Amoxicillin-Clavulanate Potass24 claims
- Nitrofurantoin Mono-Macro24 claims
- Doxycycline Hyclate16 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 89.2 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- Emergency Physicians OF St Lukes LLCSaint Louis, MO
- Premier Medical Physicians LLCDes Peres, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marietta R. Caiarelli among 5,226 family nurse practitioner records in Missouri
Marietta R. Caiarelli, FNP is one of 5,226 family nurse practitioner records with a practice address in Missouri. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 10% of them.
- NPI issued2007 · 10% of these records are older, 86% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated1996 · median 2018 among the 3,339 with a school on file
- Record last updated2009 · 44% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
714 family nurse practitioner records list a practice address in Saint Louis
They are 714 of the 27,605 NPPES records with a practice address in Saint Louis, and 5,226 family nurse practitioner records in Missouri.
All 5,226 in Missouri → Every provider in Saint Louis → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Betty Callier-GreenSaint Louis, MO 631161093007965
- Esther Copeland, FNPSaint Louis, MO 631161346707338
- Shawna Harney, FNPSaint Louis, MO 631161275081366
- Otuomasirichi Onyema, DNP, MPH, FNP-BCSaint Louis, MO 631161861048225
- Rachael Brewer, FNPSaint Louis, MO 631171073718409
- Christina Cammon, FNP-BCSaint Louis, MO 631171770028953
- Brandy Friemel, FNPSaint Louis, MO 631171760888614
- Lucy KamauSaint Louis, MO 631151932728466
Common questions
What is Marietta R. Caiarelli, FNP's NPI number?
Marietta R. Caiarelli, FNP's National Provider Identifier (NPI) is 1891993481, issued on Jul 5, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Marietta R. Caiarelli, FNP located?
The NPPES record lists a practice address at 3646 Fairview Ave, Saint Louis, MO, 63116. Phone: (314) 664-5565. Providers update this record themselves, so call before visiting.
How can I verify Marietta R. Caiarelli, FNP's license?
NPPES lists Missouri license number 142745, as entered by the provider. Search the Missouri board that licenses this profession; the NPPES record confirms identity only.
How much does Marietta R. Caiarelli, FNP prescribe under Medicare Part D?
In 2024, Marietta R. Caiarelli, FNP had 148 Medicare Part D claims for 121 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
What is Marietta R. Caiarelli, FNP's MIPS final score?
The 2023 MIPS final score is 89.2 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.