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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MICHELLE LOUISE BAY FNP-C
NPI 1679113708
Nurse Practitioner - Family in Saint Louis, MO

Active since January 07, 2020PECOS Enrolled
75.96/100
CMS Quality Rating
100 S 4TH ST STE 550, SAINT LOUIS, MO 63102(866) 849-0692 Get Directions Write a Review

NPPES record last updated: July 23, 2026. Verified against the NPPES registry weekly; last sync: August 30, 2026.

Record update history: Jul 23, 2026, Apr 14, 2026, Jun 12, 2024 and 3 more (6 updates tracked since 2020).

About Michelle Louise Bay Fnp-c NPPES

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

MICHELLE LOUISE BAY FNP-C (NPI 1679113708) is an individual family provider in Saint Louis, Missouri, licensed in Missouri (2019002146) and active in the NPI registry since January 2020. She is enrolled in Medicare PECOS and maintains a secondary practice location in Springfield.

NPPES Registry Identity

NPI1679113708
Entity TypeIndividualFemale
Primary Taxonomy363LF0000X
Provider Legal NameMICHELLE LOUISE BAYCredential: FNP-C
Location Address100 S 4TH ST STE 550Saint Louis, MO 63102-1897
Mailing AddressPo Box 735378Chicago, IL 60673-5378 · (877) 787-3430
Phone(866) 849-0692
Sole ProprietorNo
Enumeration DateJanuary 7, 2020
Last NPPES UpdateJuly 23, 20266 updates tracked since enumeration
NPPES CertifiedJuly 23, 2026
✔ NPI 1679113708 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LF0000X
Licenses✔ Licensed in MO · 2019002146✔ Licensed in AL · 3-002902✔ Licensed in AZ · TEMP343137✔ Licensed in HI · 5855
Also ListedNurse Practitioner · Primary CareTaxonomy 363LP2300X · License 2019002146 (MO), A190248 (IA)
100 S 4TH ST STE 550, Saint Louis, MO 63102
Open in Google Maps ↗

Secondary Practice Location 1

Location 12401 W Grand StSpringfield, MO 65802-4967 · Phone (417) 864-4545

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Kansas City.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Michelle Louise Bay Fnp-c is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 7

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

Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes 99309
A follow-up nursing facility visit per day is a daily check-in by a healthcare professional. This 25-minute visit typically involves monitoring your health progress, addressing any concerns, and adjusting treatment plans as necessary. It's a vital part of ensuring your ongoing wellbeing.
363 services67 patients
Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more 99308
A follow-up nursing facility visit per day is a daily check-up service provided by healthcare professionals. It lasts around 15 minutes and involves assessing your health status, monitoring your recovery progress, and addressing any concerns you may have about your health or treatment.
260 services47 patients
Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more 99308
A follow-up nursing facility visit per day is a daily check-up service provided by healthcare professionals. It lasts around 15 minutes and involves assessing your health status, monitoring your recovery progress, and addressing any concerns you may have about your health or treatment.
184 services67 patients
Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes 99309
A follow-up nursing facility visit per day is a daily check-in by a healthcare professional. This 25-minute visit typically involves monitoring your health progress, addressing any concerns, and adjusting treatment plans as necessary. It's a vital part of ensuring your ongoing wellbeing.
131 services35 patients
Removal of skin and tissue, 20.0 sq cm or less 11042
This procedure involves the surgical removal of skin and tissue, up to 20.0 square cm in size. It's often performed to treat conditions like skin cancer or to remove moles, warts, and other skin lesions. The area is numbed and the unwanted tissue is carefully cut out.
54 services20 patients
Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes 99310
A follow-up nursing facility visit is a routine check-up that typically lasts about 35 minutes. During this visit, your health status is evaluated, any changes in your condition are noted, and necessary adjustments to your care plan are made. It's an essential part of maintaining your health.
50 services32 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63102 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
$86.32 typical visit price
range $55.65 – $169.38
Typical copayment $21.58 (range $13.91 – $42.34)
Most-billed visit code 99203
Established Patient
$98.37 typical visit price
range $17.76 – $137.92
Typical copayment $24.59 (range $4.44 – $34.48)
Most-billed visit code 99214
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.

75.96/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality82.3
Improvement Activities40
Cost19.01

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.

MRS. MAURINE BETH SACHS APRN, FNP-C
Nurse Practitioner (Family)
100 S 4TH ST STE 550
SAINT LOUIS, MO 63102
St. Louis City (866) 849-0692
DK HOME HEALTHCARE, LLC
Home Health
100 S 4TH ST STE 550
SAINT LOUIS, MO 63102
St. Louis City (314) 643-1861
DAVIS RELIABLE HOME HEALTHCARE AGENCY
Home Health
100 S 4TH ST STE 550
SAINT LOUIS, MO 63102
St. Louis City (314) 371-8043
DK HOME HEALTHCARE, LLC
In Home Supportive Care
100 S 4TH ST STE 550
SAINT LOUIS, MO 63102
St. Louis City (314) 643-1861
MS. LYNNE MARJORIE SCHIFREEN RN, FNP
Nurse Practitioner (Family)
100 S 4TH ST STE 550
SAINT LOUIS, MO 63102
St. Louis City (866) 849-0692
MICHAEL CONNER
Home Health
100 S 4TH ST STE 550
SAINT LOUIS, MO 63102
St. Louis City (314) 366-0000
MISSOURI PROFESSIONAL HEALTH SERVICES
Home Health
100 S 4TH ST STE 550
SAINT LOUIS, MO 63102
St. Louis City (612) 644-0026
HANNAH MARIA HARPER PA-C
Physician Assistant
100 S 4TH ST STE 550
SAINT LOUIS, MO 63102
St. Louis City (919) 391-7202

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Michelle Bay's NPI number?

The NPI number for Michelle Bay is 1679113708. It was assigned to this individual provider in the NPPES registry on January 7, 2020.

Where is Michelle Bay located?

Michelle Bay practices at 100 S 4th St Ste 550, Saint Louis, MO 63102. The listed phone number is (866) 849-0692.

What is Michelle Bay's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

Is Michelle Bay enrolled in Medicare?

Yes. Michelle Bay is registered in the Medicare PECOS enrollment system.

What insurance does Michelle Bay accept?

Health plans from Blue Cross and Blue Shield of Kansas City list Michelle Bay as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Michelle Bay was last updated on July 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 41 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.