MRS. MARGAUX ANN WELLER I FNP-BC
NPI 1083153589
Nurse Practitioner - Family in Saint Charles, MO

Active since February 16, 2017PECOS EnrolledAccepts Medicare Assignment
300 1ST CAPITOL DR, SAINT CHARLES, MO 63301(636) 947-5000 Get Directions Write a Review

NPPES record last updated: November 10, 2020. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Nov 10, 2020, Feb 16, 2017 (2 updates tracked since 2017).

About Mrs. Margaux Ann Weller I Fnp-bc NPPES

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

MRS. MARGAUX ANN WELLER I FNP-BC (NPI 1083153589) is an individual family provider in Saint Charles, Missouri, licensed in Missouri (2011019986) and active in the NPI registry since February 2017. She is enrolled in Medicare PECOS, is affiliated with Ssm St Joseph Health Center, and maintains a secondary practice location in Saint Charles.

NPPES Registry Identity

NPI1083153589
Entity TypeIndividualFemale
Primary Taxonomy363LF0000X
Provider Legal NameMRS. MARGAUX ANN WELLER ICredential: FNP-BC
Location Address300 1ST CAPITOL DRSaint Charles, MO 63301-2844
Mailing AddressPo Box 955534Saint Louis, MO 63195-5534
Sole ProprietorNo
Medical School CMSOtherGraduated 2014
Enumeration DateFebruary 16, 2017
Last NPPES UpdateNovember 10, 20202 updates tracked since enumeration
NPPES CertifiedNovember 10, 2020
NPI 1083153589 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LF0000X
License Licensed in MO · 2011019986
300 1ST CAPITOL DR, Saint Charles, MO 63301

Secondary Practice Location 1

Location 1400 1st Capitol Dr Ste 201Saint Charles, MO 63301-2882 · Phone (636) 669-2332

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Mrs. Margaux Ann Weller I Fnp-bc is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID4587949425
PECOS Enrollment IDI20170316000580
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 4

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.

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
32 services31 patients
Advance care planning, first 30 minutes 99497
Advance care planning is a process where you discuss your healthcare preferences with your doctor. This conversation, lasting up to 30 minutes, helps ensure your wishes are respected if you're unable to communicate them in the future. It's about your care, your way.
27 services26 patients
Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes 99221
Initial hospital inpatient care refers to the first day of your stay in the hospital. This service typically includes a 30-minute check-up with a healthcare professional. They'll assess your health, discuss your condition, and plan your treatment. It's part of ensuring you receive the best possible care.
18 services18 patients
Advance care planning, each additional 30 minutes 99498
Advance care planning involves discussing and documenting your future health care preferences in case you're unable to make decisions for yourself. Each additional 30 minutes allows more time to explore your wishes, values, and goals for treatment.
15 services13 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Ssm St Joseph Health Center

Acute Care Hospitals · Saint Charles, MO
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260005
Location300 1st Capitol DrSaint Charles, MO 63301 · St. Charles County
Emergency services

Ssm St Joseph Hospital West

Acute Care Hospitals · Lake Saint Louis, MO
3/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number260200
Location100 Medical PlazaLake Saint Louis, MO 63367 · St. Charles County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63301 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.

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.

Physician Assistant
300 1ST CAPITOL DR
SAINT CHARLES, MO 63301
Nurse Anesthetist, Certified Registered
300 1ST CAPITOL DR
SAINT CHARLES, MO 63301
Internal Medicine
300 1ST CAPITOL DR
SAINT CHARLES, MO 63301
Dietitian, Registered
300 1ST CAPITOL DR
SAINT CHARLES, MO 63301
Occupational Therapist
300 1ST CAPITOL DR
SAINT CHARLES, MO 63301
Internal Medicine (Pulmonary Disease)
300 1ST CAPITOL DR
SAINT CHARLES, MO 63301
Pharmacist
300 1ST CAPITOL DR
SAINT CHARLES, MO 63301
Emergency Medicine
300 1ST CAPITOL DR
SAINT CHARLES, MO 63301

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 Margaux Weller's NPI number?

The NPI number for Margaux Weller is 1083153589. It was assigned to this individual provider in the NPPES registry on February 16, 2017.

Where is Margaux Weller located?

Margaux Weller practices at 300 1st Capitol Dr, Saint Charles, MO 63301. The listed phone number is (636) 947-5000.

What is Margaux Weller's specialty?

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

Is Margaux Weller enrolled in Medicare?

Yes. Margaux Weller is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is Margaux Weller affiliated with any hospitals?

According to CMS data, Margaux Weller is affiliated with Ssm St Joseph Health Center and Ssm St Joseph Hospital West.

When was this NPI record last updated?

The NPPES record for Margaux Weller was last updated on November 10, 2020. NPI Profile syncs with the weekly NPPES data releases published by CMS.