DR. MOLLY BARR MD
NPI 1821659145
Pediatrics - Pediatric Gastroenterology in Saint Louis, MO

Active since June 26, 2019PECOS Enrolled
1 CHILDRENS PL CB 8116, SAINT LOUIS, MO 63110(314) 454-6173(314) 454-2412 Get Directions Write a Review

NPPES record last updated: April 1, 2025. Verified against the NPPES registry weekly; last sync: July 19, 2026.

Record update history: Apr 1, 2025, Feb 5, 2025, Apr 6, 2022 (3 updates tracked since 2022).

About Dr. Molly Barr Md NPPES

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

DR. MOLLY BARR MD (NPI 1821659145) is an individual pediatric gastroenterology provider in Saint Louis, Missouri, licensed in Missouri (2021036581) and active in the NPI registry since June 2019. She is enrolled in Medicare PECOS, maintains a secondary practice location in Saint Louis, and is a graduate of Indiana University School Of Medicine (2019).

NPPES Registry Identity

NPI1821659145
Entity TypeIndividualFemale
Primary Taxonomy2080P0206X
Provider Legal NameDR. MOLLY BARRCredential: MD
Location Address1 CHILDRENS PL CB 8116Saint Louis, MO 63110
Mailing Address1 Childrens Pl Cb 8116Saint Louis, MO 63110 · (314) 454-6173 · Fax (314) 454-2412
Fax(314) 454-2412
Sole ProprietorNo
Medical School CMSIndiana University School Of MedicineGraduated 2019
Enumeration DateJune 26, 2019
Last NPPES UpdateApril 1, 20253 updates tracked since enumeration
NPPES CertifiedApril 1, 2025
NPI 1821659145 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyPediatrics · Pediatric GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code2080P0206X
License Licensed in MO · 2021036581
Definition

A pediatrician who specializes in the diagnosis and treatment of diseases of the digestive systems of infants, children and adolescents. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using lighted scopes to see internal organs.

Also ListedPediatricsTaxonomy 208000000X · License 2021036581 (MO)
1 CHILDRENS PL CB 8116, Saint Louis, MO 63110

Other Names 1

Former Name (1)Molly Knecht

Secondary Practice Location 1

Location 11465 S Grand BlvdSaint Louis, MO 63104-1003 · Phone (314) 617-2000

Accepted 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)

Dr. Molly Barr Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID6800326505
PECOS Enrollment IDI20251003003883
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 14

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Pediatrics
1 CHILDRENS PL CB 8116
ST. LOUIS, MO 63110
Pediatrics (Pediatric Critical Care Medicine)
1 CHILDRENS PL CB 8116
SAINT LOUIS, MO 63110
Pediatrics
1 CHILDRENS PL CB 8116
SAINT LOUIS, MO 63110
Pediatrics
1 CHILDRENS PL CB 8116
SAINT LOUIS, MO 63110
Pediatrics
1 CHILDRENS PL CB 8116
SAINT LOUIS, MO 63110
Pediatrics (Pediatric Hematology-Oncology)
1 CHILDRENS PL CB 8116
SAINT LOUIS, MO 63110
Pediatrics
1 CHILDRENS PL CB 8116
SAINT LOUIS, MO 63110
Pediatrics
1 CHILDRENS PL CB 8116
SAINT LOUIS, MO 63110

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 Molly Barr's NPI number?

The NPI number for Molly Barr is 1821659145. It was assigned to this individual provider in the NPPES registry on June 26, 2019. The provider is also known as Molly Knecht.

Where is Molly Barr located?

Molly Barr practices at 1 Childrens Pl Cb 8116, Saint Louis, MO 63110. The listed phone number is (314) 454-6173.

What is Molly Barr's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Gastroenterology, with taxonomy code 2080P0206X.

Is Molly Barr enrolled in Medicare?

Yes. Molly Barr is registered in the Medicare PECOS enrollment system.

What insurance does Molly Barr accept?

Health plans from Anthem Blue Cross and Blue Shield and Oscar Insurance Company list Molly Barr 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 Molly Barr was last updated on April 1, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.