1. Home
  2. Directory
  3. Missouri
  4. Chesterfield
  5. Physician Assistant
  6. NPI Profile

LAUREN OSIAS
NPI 1275345951
Physician Assistant in Chesterfield, MO

Active since January 21, 2025PECOS EnrolledAccepts Medicare Assignment
226 S WOODS MILL RD STE 58W, CHESTERFIELD, MO 63017(314) 878-2888(314) 576-8187 Get Directions Write a Review

NPPES record last updated: May 1, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Lauren Osias NPPES

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

LAUREN OSIAS (NPI 1275345951) is an individual physician assistant in Chesterfield, Missouri and active in the NPI registry since January 2025. She is enrolled in Medicare PECOS, is affiliated with St Lukes Hospital, and is a graduate of Other (2024).

NPPES Registry Identity

NPI1275345951
Entity TypeIndividualFemale
Primary Taxonomy363A00000X
Provider Legal NameLAUREN OSIAS
Location Address226 S WOODS MILL RD STE 58WChesterfield, MO 63017-3664
Mailing Address16244 Port Of Nantucket DrWildwood, MO 63040-1531
Phone(314) 878-2888
Fax(314) 576-8187
Sole ProprietorNo
Medical School CMSOtherGraduated 2024
Enumeration DateJanuary 21, 2025
Last NPPES UpdateMay 1, 2025
NPPES CertifiedMay 1, 2025
✔ NPI 1275345951 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPhysician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363A00000X
Definition
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
226 S WOODS MILL RD STE 58W, Chesterfield, MO 63017
Open in Google Maps ↗

Accepted Insurance

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

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

Lauren Osias 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 ID9032636253
PECOS Enrollment IDI20250509002635
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.

Hospital Affiliations CMS Care Compare

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

St Lukes Hospital

Acute Care Hospitals · Chesterfield, MO
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260179
Location232 S Woods Mill RdChesterfield, MO 63017 · St. Louis County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63017 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
$69.50 typical visit price
range $17.76 – $137.92
Typical copayment $17.37 (range $4.44 – $34.48)
Most-billed visit code 99213
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 2

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

MS. CATHY SCHROY AUD
Audiologist
226 S WOODS MILL RD STE 58W, STE 58W
CHESTERFIELD, MO 63017
St. Louis County (314) 453-0001
JENNIFER SUMMERS PA-C, RD
Physician Assistant (Surgical)
226 S WOODS MILL RD STE 58W
CHESTERFIELD, MO 63017
St. Louis County (314) 878-2888

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 Lauren Osias's NPI number?

The NPI number for Lauren Osias is 1275345951. It was assigned to this individual provider in the NPPES registry on January 21, 2025.

Where is Lauren Osias located?

Lauren Osias practices at 226 S Woods Mill Rd Ste 58W, Chesterfield, MO 63017. The listed phone number is (314) 878-2888.

What is Lauren Osias's specialty?

The primary specialty registered for this NPI is Physician Assistant with taxonomy code 363A00000X.

Is Lauren Osias enrolled in Medicare?

Yes. Lauren Osias 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.

What insurance does Lauren Osias accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Arkansas Health & Wellness, Ambetter from Home State Health and Ambetter from Sunflower Health Plan and 2 other insurers list Lauren Osias 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.

Is Lauren Osias affiliated with any hospitals?

According to CMS data, Lauren Osias is affiliated with St Lukes Hospital.

When was this NPI record last updated?

The NPPES record for Lauren Osias was last updated on May 1, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.