DR. DANIEL S PLAX MD
NPI 1336115252
Pediatrics in Saint Louis, MO

Q: What is Daniel Plax's NPI number?

The NPI number for Daniel Plax is 1336115252. It was assigned to this individual provider in the NPPES registry on February 28, 2006.

Q: What is Daniel Plax's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Q: When was this NPI record last updated?

The NPPES record for Daniel Plax 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 18 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.

Active since February 28, 2006PECOS Enrolled

8888 LADUE RD, STE 100, SAINT LOUIS, MO 63124(314) 862-4050(314) 862-1141 Get Directions Write a Review

NPPES record last updated: April 17, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Apr 25, 2024, Apr 10, 2024, Nov 15, 2021 and 1 more (4 updates tracked since 2021).

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About Dr. Daniel S Plax Md NPPES

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

DR. DANIEL S PLAX MD (NPI 1336115252) is an individual pediatrics provider in Saint Louis, Missouri, licensed in Missouri (104090) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1336115252

Entity TypeIndividualMale

Primary Taxonomy208000000X

Provider Legal NameDR. DANIEL S PLAXCredential: MD

Location Address8888 LADUE RD, STE 100Saint Louis, MO 63124-2326

Mailing AddressPo Box 7412125Chicago, IL 60674-2125 · (314) 862-4050 · Fax (314) 862-1141

Phone(314) 862-4050

Fax(314) 862-1141

Sole ProprietorNo

Enumeration DateFebruary 28, 2006

Last NPPES UpdateApril 17, 20254 updates tracked since enumeration

✔ NPI 1336115252 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians

Taxonomy Code208000000X

License✔ Licensed in MO · 104090

Definition

A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.

8888 LADUE RD, Saint Louis, MO 63124

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Other Identifiers 1

Medicaid205013501MO

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Cox HealthPlans, UnitedHealthcare.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Daniel S Plax 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.

Medicare Billing Reassignment

Medicare enrollment records show Daniel Plax reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Washington University

Same address

Multi-Specialty

8888 LADUE RD STE 100
Saint Louis, MO 63124

Reassigned Medicare billing, Missouri enrollment
12 clinicians in this Medicare group

NPI 1346847233 (314) 862-4050

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 63124 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.

DR. KIMBERLY S SIRL PH.D.

Psychologist (Clinical)

8888 LADUE RD, #120
SAINT LOUIS, MO 63124

St. Louis County (314) 454-6069

WOLKEN DENTAL D D S P C

Durable Medical Equipment & Medical Supplies (Customized Equipment)

8888 LADUE RD
SAINT LOUIS, MO 63124

St. Louis County (314) 727-6676

WOLKEN DENTAL

Dentist (General Practice)

8888 LADUE RD, STE 200
ST. LOUIS, MO 63124

St. Louis County (314) 727-6676

DR. ELIZABETH L ATKINSON MD

Pediatrics

8888 LADUE RD, STE 100
SAINT LOUIS, MO 63124

St. Louis County (314) 862-4050

DR. CHRISTOPHER M WOLKEN DDS

Dentist

8888 LADUE RD, STE 200
SAINT LOUIS, MO 63124

St. Louis County (314) 727-6676

DR. ARCHNA GOEL CALFEE MD

Pediatrics

8888 LADUE RD, STE 100
SAINT LOUIS, MO 63124

St. Louis County (314) 862-4050

DR. JENNIFER ANNE HORST MD

Pediatrics

8888 LADUE RD, STE 100
SAINT LOUIS, MO 63124

St. Louis County (314) 862-4050

DR. SUSAN C SYLVIA PH.D.

Psychologist (Clinical)

8888 LADUE RD, #120
SAINT LOUIS, MO 63124

St. Louis County (314) 454-6069

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 Daniel Plax's NPI number?

The NPI number for Daniel Plax is 1336115252. It was assigned to this individual provider in the NPPES registry on February 28, 2006.

Where is Daniel Plax located?

Daniel Plax practices at 8888 Ladue Rd Ste 100, Saint Louis, MO 63124. The listed phone number is (314) 862-4050.

What is Daniel Plax's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Is Daniel Plax enrolled in Medicare?

Yes. Daniel Plax is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Daniel Plax's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Daniel Plax reassigns Medicare benefits to Washington University (Saint Louis, MO). The 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 Daniel Plax's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Daniel Plax accept?

Health plans from Cox HealthPlans and UnitedHealthcare list Daniel Plax 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 Daniel Plax 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 18 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.