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DR. ALEXANDRA GYBBON FALLON MD
NPI 1427440577
Hospitalist in Saint Louis, MO

Active since February 26, 2015PECOS Enrolled
1 CHILDRENS PL, DIV PED HOSPITALIST MED, SAINT LOUIS, MO 63110(314) 454-2076(314) 747-8953 Get Directions Write a Review

NPPES record last updated: April 17, 2025. Verified against the NPPES registry weekly; last sync: August 23, 2026.

Record update history: Apr 25, 2024, Apr 10, 2024, Aug 30, 2023 and 3 more (6 updates tracked since 2020).

About Dr. Alexandra Gybbon Fallon Md NPPES

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

DR. ALEXANDRA GYBBON FALLON MD (NPI 1427440577) is an individual hospitalist provider in Saint Louis, Missouri, licensed in Missouri (2022039175) and active in the NPI registry since February 2015. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1427440577
Entity TypeIndividualFemale
Primary Taxonomy208M00000X
Provider Legal NameDR. ALEXANDRA GYBBON FALLONCredential: MD
Location Address1 CHILDRENS PL, DIV PED HOSPITALIST MEDSaint Louis, MO 63110-1002
Mailing AddressPo Box 7412011Chicago, IL 60674-2011 · (314) 454-2076 · Fax (314) 747-8953
Phone(314) 454-2076
Fax(314) 747-8953
Sole ProprietorNo
Enumeration DateFebruary 26, 2015
Last NPPES UpdateApril 17, 20256 updates tracked since enumeration
NPPES CertifiedMarch 31, 2023
✔ NPI 1427440577 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians
Taxonomy Code208M00000X
License✔ Licensed in MO · 2022039175
Definition
Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.
Also ListedPediatricsTaxonomy 208000000X · License 2022039175 (MO)
1 CHILDRENS PL, Saint Louis, MO 63110
Open in Google Maps ↗

Other Identifiers 1

Medicaid200120034MO

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Alexandra Gybbon Fallon Md 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63110 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
$128.28 typical visit price
range $55.65 – $169.38
Typical copayment $32.07 (range $13.91 – $42.34)
Most-billed visit code 99204
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.

ARIE BAKER MSW, LCSW
Social Worker (Clinical)
1 CHILDRENS PL, CAMPUS BOX 8116
SAINT LOUIS, MO 63110
St. Louis City (314) 747-6169
SUSAN CHEUNG WALSH AUD
Audiologist-Hearing Aid Fitter
1 CHILDRENS PL
SAINT LOUIS, MO 63110
St. Louis City (314) 454-4649
MS. JENNIFER MARIE JACOBI PNP
Nurse Practitioner (Pediatrics)
1 CHILDRENS PL, DEPT NEUROLOGICAL SURGERY, STE 4E
SAINT LOUIS, MO 63110
St. Louis City (314) 362-3577
MS. EMILY LINCOLN RN, NNP-BC
Nurse Practitioner (Neonatal, Critical Care)
1 CHILDRENS PL
SAINT LOUIS, MO 63110
St. Louis City (314) 454-6000
MS. MARISSA ROSE PEREZ-MAGNELLI PNP
Nurse Practitioner (Pediatrics)
1 CHILDRENS PL, DEPT NEUROLOGY, STE 2130
SAINT LOUIS, MO 63110
St. Louis City (314) 454-6120
DR. WILLIAM L RIVES MD
Hospitalist
1 CHILDRENS PL, DIV PED HOSPITALIST MED
SAINT LOUIS, MO 63110
St. Louis City (314) 454-2076
DR. PETER M KILBRIDGE MD
Pediatrics
1 CHILDRENS PL, SUITE C
SAINT LOUIS, MO 63110
St. Louis City (314) 454-2479
DR. JEFFREY MAGEE MD
Pediatrics (Pediatric Hematology-Oncology)
1 CHILDRENS PL, DIV PED HEMATOLOGY AND ONC, STE 9S
SAINT LOUIS, MO 63110
St. Louis City (314) 454-6018

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 Alexandra Fallon's NPI number?

The NPI number for Alexandra Fallon is 1427440577. It was assigned to this individual provider in the NPPES registry on February 26, 2015.

Where is Alexandra Fallon located?

Alexandra Fallon practices at 1 Childrens Pl Div Ped Hospitalist Med, Saint Louis, MO 63110. The listed phone number is (314) 454-2076.

What is Alexandra Fallon's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Is Alexandra Fallon enrolled in Medicare?

Yes. Alexandra Fallon is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Alexandra Fallon was last updated on April 17, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 months 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.