Michelle Louise Bay, FNP-C
Family Nurse Practitioner · Saint Louis, MO
Michelle Louise Bay, FNP-C is a family nurse practitioner with a practice address in Saint Louis, Missouri, and NPI 1679113708, issued on Jan 7, 2020. Check the license (Missouri 2019002146, as entered in NPPES) with the Missouri board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Michelle Louise Bay
- Credential
- FNP-C
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License numbers
- 2019002146 MO
3-002902 AL
TEMP343137 AZ
5855 HI
A190248 IA
Self-reported in NPPES; status is on the state search - Practice location
- 100 S 4TH St Ste 550, Saint Louis, MO 63102
- Phone
- (866) 849-0692
- Enumerated
- Jan 7, 2020
- Record last updated
- Jul 23, 2026
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 5,226 in Missouri → Look up another NPI →
Also registered at 100 S 4TH St Ste 550
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Megan Augustine, APRN, FNP-CFamily Nurse Practitioner1558737874
- Bobbie Bode, FNP-CFamily Nurse Practitioner1811310915
- Danielle CodyChore Provider1164807483
- Arkila Covington, LMFT, IBNFMarriage & Family Therapist1568631497
- Korrin Einertson, PA-CPhysician Assistant1710553540
- Hannah Harper, PA-CPhysician Assistant1154889392
Verify Michelle Louise Bay in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Missouri board licenses this profession
Search for license 2019002146Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% fewer Medicare Part D claims than the average family nurse practitioner in 2024
158 Medicare Part D claims for 47 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D.
Most prescribed
- Meloxicam14 claims
- Trazodone Hcl13 claims
- Ipratropium-Albuterol12 claims
- Nyamyc11 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): 76 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).
Michelle Louise Bay among 5,226 family nurse practitioner records in Missouri
Michelle Louise Bay, FNP-C 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 2020, is newer than 66% of them.
- NPI issued2020 · 66% of these records are older, 28% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 64% of these records are
- Record last updated2026 · 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
- Megan Augustine, APRN, FNP-CSaint Louis, MO 631021558737874
- Bobbie Bode, FNP-CSaint Louis, MO 631021811310915
- Karen Bolhuis, MSN FNPSaint Louis, MO 631021609051226
- Erica Evans, FNP-CSaint Louis, MO 631021902577042
- Leesa McBroom, APRN, FNP-CSaint Louis, MO 631021346252368
- Maurine Sachs, APRN, FNP-CSaint Louis, MO 631021003271040
- Lynne Schifreen, RN, FNPSaint Louis, MO 631021063512564
- Stephanie Wood, NPSaint Louis, MO 631021528602539
Common questions
What is Michelle Louise Bay, FNP-C's NPI number?
Michelle Louise Bay, FNP-C's National Provider Identifier (NPI) is 1679113708, issued on Jan 7, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Michelle Louise Bay, FNP-C located?
The NPPES record lists a practice address at 100 S 4TH St Ste 550, Saint Louis, MO, 63102. Phone: (866) 849-0692. Providers update this record themselves, so call before visiting.
How can I verify Michelle Louise Bay, FNP-C's license?
NPPES lists Missouri license number 2019002146, as entered by the provider. Search the Missouri board that licenses this profession; the NPPES record confirms identity only.
How much does Michelle Louise Bay, FNP-C prescribe under Medicare Part D?
In 2024, Michelle Louise Bay, FNP-C had 158 Medicare Part D claims for 47 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
What is Michelle Louise Bay, FNP-C's MIPS final score?
The 2023 MIPS final score is 76 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.