Marissa Leigh Smith, FNP
Family Nurse Practitioner · Saint Louis, MO
Marissa Leigh Smith, FNP is a family nurse practitioner with a practice address in Saint Louis, Missouri, and NPI 1720480015, issued on Sep 18, 2014. Check the license (Missouri 2021009802, as entered in NPPES) with the Missouri board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Marissa Leigh Smith
- Credential
- FNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 2021009802 MO
Self-reported in NPPES; status is on the state search - Practice location
- 1600 S Brentwood Blvd, Saint Louis, MO 63144
- Phone
- (314) 362-1408
- Enumerated
- Sep 18, 2014
- Record last updated
- Nov 15, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (314) 747-4342
- Medicaid ID
- 420097107 MO
- Medicare enrollment
- Enrolled (PECOS I20231218000910); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 5,226 in Missouri → Look up another NPI →
Also registered at 1600 S Brentwood Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Marissa Leigh Smith in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Missouri board licenses this profession
Search for license 2021009802Check 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 67 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D.
Most prescribed
- Gabapentin31 claims
- Cefdinir13 claims
- Trazodone Hcl11 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 practice group's MIPS final score for 2023 (Medicare payment program): 79.3 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Cep America-Illinois Hospitalists, LLPO Fallon, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marissa Leigh Smith among 5,226 family nurse practitioner records in Missouri
Marissa Leigh Smith, 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 2014, is newer than 29% of them.
- NPI issued2014 · 29% of these records are older, 66% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2014 · median 2018 among the 3,339 with a school on file
- Record last updated2021 · 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
- Jennifer Berry, FNP-BCSaint Louis, MO 631441366719072
- Kristine FreschiBrentwood, MO 631441972613990
- Catherine Goebel, FNPSaint Louis, MO 631441447706924
- Ronita Hayes, FNPSaint Louis, MO 631441851639173
- Barbara King, FNP, BC, CNPSaint Louis, MO 631441508981820
- Megan Lehr, APRNBrentwood, MO 631441396991410
- Debra Rieger, FNPBrentwood, MO 631441992188288
- Keiko Sawano, FNPSaint Louis, MO 631441114369881
Common questions
What is Marissa Leigh Smith, FNP's NPI number?
Marissa Leigh Smith, FNP's National Provider Identifier (NPI) is 1720480015, issued on Sep 18, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Marissa Leigh Smith, FNP located?
The NPPES record lists a practice address at 1600 S Brentwood Blvd, Saint Louis, MO, 63144. Phone: (314) 362-1408. Providers update this record themselves, so call before visiting.
How can I verify Marissa Leigh Smith, FNP's license?
NPPES lists Missouri license number 2021009802, as entered by the provider. Search the Missouri board that licenses this profession; the NPPES record confirms identity only.
How much does Marissa Leigh Smith, FNP prescribe under Medicare Part D?
In 2024, Marissa Leigh Smith, FNP had 148 Medicare Part D claims for 67 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
What is Marissa Leigh Smith, FNP's MIPS final score?
The 2023 MIPS final score is 79.3 of 100, reported for the practice group. 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.