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DAVID AARON SIMON DO
NPI 1306290374
Pediatrics - Pediatric Gastroenterology in Saint Louis, MO

Active since April 15, 2016PECOS Enrolled
1465 S GRAND BLVD, SAINT LOUIS, MO 63104(314) 577-5647(314) 268-2775 Get Directions Write a Review

NPPES record last updated: July 3, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jul 3, 2024, Jun 22, 2021, Jul 3, 2018 (3 updates tracked since 2018).

About David Aaron Simon Do NPPES

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

DAVID AARON SIMON DO (NPI 1306290374) is an individual pediatric gastroenterology provider in Saint Louis, Missouri, licensed in Missouri (2018020636) and active in the NPI registry since April 2016. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1306290374
Entity TypeIndividualMale
Primary Taxonomy2080P0206X
Provider Legal NameDAVID AARON SIMONCredential: DO
Location Address1465 S GRAND BLVDSaint Louis, MO 63104-1003
Mailing Address1465 S Grand BlvdSaint Louis, MO 63104-1003 · (314) 577-5647 · Fax (314) 268-2775
Phone(314) 577-5647
Fax(314) 268-2775
Sole ProprietorNo
Enumeration DateApril 15, 2016
Last NPPES UpdateJuly 3, 20243 updates tracked since enumeration
NPPES CertifiedJuly 3, 2024
✔ NPI 1306290374 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 · 2018020636
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 2018020636 (MO)
1465 S GRAND BLVD, Saint Louis, MO 63104
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arkansas Health & Wellness, Ambetter from Sunflower Health Plan, Ambetter Health and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

David Aaron Simon Do 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.

Medicare Billing Reassignments

2

Medicare enrollment records show David Simon reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Ssm Health Care Group
0.2 mi
Internal Medicine
1225 SOUTH GRAND BLVD, 2L - DOOR 3,4
Saint Louis, MO 63104
  • Reassigned Medicare billing, Missouri enrollment
  • 1,294 clinicians in this Medicare group
NPI 1306589544 (314) 977-6100
Ssm Cardinal Glennon Childrens Hospital
13 mi
Pediatrics
2927 S . KINGS HIGHWAY BLVD
Saint Louis, MO 63139
  • Reassigned Medicare billing, Missouri enrollment
  • Medicare enrollment name: Ssm Cardinal Glennon Children's Hospital
  • 414 clinicians in this Medicare group
NPI 1073568226 (314) 268-4070

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63104 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.

DR. SARAH MARGARET HANLY PH.D.
Psychologist (Clinical)
1465 S GRAND BLVD
SAINT LOUIS, MO 63104
St. Louis City (314) 577-5667
KAVIPRIYA KOMESWARAN
Pediatrics (Pediatric Critical Care Medicine)
1465 S GRAND BLVD
SAINT LOUIS, MO 63104
St. Louis City (314) 617-2000
ALEXIS HAAS STEWART
Anesthesiologist Assistant
1465 S GRAND BLVD
SAINT LOUIS, MO 63104
St. Louis City (314) 977-5700
NATALIE DRURY RD, LD
Dietitian, Registered (Nutrition, Pediatric)
1465 S GRAND BLVD
SAINT LOUIS, MO 63104
St. Louis City (314) 577-5387
MS. MASHAL AZIZ RANA MBBS
Student in an Organized Health Care Education/Training Program
1465 S GRAND BLVD
ST.LOUIS, MO 63104
St. Louis City (314) 577-5382
TIMOTHY J KUTZ MD
Pediatrics (Child Abuse Pediatrics)
1465 S GRAND BLVD
SAINT LOUIS, MO 63104
St. Louis City (314) 268-6406
CHRISTOPHER SALLEE MD
Pediatrics
1465 S GRAND BLVD
ST. LOUIS, MO 63104
St. Louis City (314) 577-1607
AMBER GRANA DO
Pediatrics (Pediatric Critical Care Medicine)
1465 S GRAND BLVD, DIVISION OF PEDIATRIC CRITICAL CARE
SAINT LOUIS, MO 63104
St. Louis City (314) 577-5695

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 David Simon's NPI number?

The NPI number for David Simon is 1306290374. It was assigned to this individual provider in the NPPES registry on April 15, 2016.

Where is David Simon located?

David Simon practices at 1465 S Grand Blvd, Saint Louis, MO 63104. The listed phone number is (314) 577-5647.

What is David Simon's specialty?

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

Is David Simon enrolled in Medicare?

Yes. David Simon is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for David Simon's services?

According to the CMS Revalidation Reassignment List (October 2026 release), David Simon reassigns Medicare benefits to 2 organizations: Ssm Health Care Group (Saint Louis, MO) and Ssm Cardinal Glennon Childrens Hospital (Saint Louis, MO). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for David Simon's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does David Simon accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Arkansas Health & Wellness, Ambetter from Sunflower Health Plan and Ambetter of Oklahoma and 4 other insurers list David Simon 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 David Simon was last updated on July 3, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years 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.