LORI ANN ORSO
NPI 1952084873
Nurse Practitioner - Family in Ellisville, MO
About Lori Ann Orso NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
LORI ANN ORSO (NPI 1952084873) is an individual family provider in Ellisville, Missouri, licensed in Missouri (2023022287) and active in the NPI registry since August 2023. She is enrolled in Medicare PECOS, is affiliated with St Lukes Hospital, and is a graduate of Other (2021).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Lori Ann Orso 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.
Medicare Billing Reassignments
4Medicare enrollment records show Lori Orso reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Chesterfield, MO 63017
- Reassigned Medicare billing, Missouri enrollment
- Medicare enrollment name: Emergency Physicians Of St Lukes LLC
- 124 clinicians in this Medicare group
Saint Louis, MO 63122
- Reassigned Medicare billing, Missouri enrollment
- 34 clinicians in this Medicare group
Creve Coeur, MO 63141
- Reassigned Medicare billing, Missouri enrollment
- Medicare enrollment name: St. Luke's Immediate Care, LLC
- 48 clinicians in this Medicare group
Imperial, MO 63052
- Reassigned Medicare billing, Missouri enrollment
- 26 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 3
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
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, MOPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 63011 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 11
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
ELLISVILLE, MO 63011
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 Lori Orso's NPI number?
The NPI number for Lori Orso is 1952084873. It was assigned to this individual provider in the NPPES registry on August 8, 2023.
Where is Lori Orso located?
Lori Orso practices at 233 Clarkson Rd, Ellisville, MO 63011. The listed phone number is (636) 256-8644.
What is Lori Orso's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Lori Orso enrolled in Medicare?
Yes. Lori Orso 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.
Which organizations bill Medicare for Lori Orso's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Lori Orso reassigns Medicare benefits to 4 organizations: Emergency Physicians Of St. Luke's, LLC (Chesterfield, MO), Premier Medical Physicians LLC (Saint Louis, MO), St Lukes Immediate Care LLC (Creve Coeur, MO) and Family Medicine - Slmg South, LLC (Imperial, 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 Lori Orso's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Lori Orso accept?
Health plans from Ambetter Health, Ambetter from Arkansas Health & Wellness, Ambetter from Sunflower Health Plan, Ambetter of Oklahoma and Ambetter of Tennessee and 3 other insurers list Lori Orso 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 Lori Orso affiliated with any hospitals?
According to CMS data, Lori Orso is affiliated with St Lukes Hospital.
When was this NPI record last updated?
The NPPES record for Lori Orso was last updated on October 30, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.
# Lori Ann Orso · NPI 1952084873
Family physician in Ellisville, Missouri. Individual provider, active in the CMS NPPES registry since August 8, 2023.
## Identity
- **NPI:** 1952084873 (Entity type: Individual)
- **Enumerated:** August 8, 2023
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 2023022287 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 233 CLARKSON RD, Ellisville, MO 63011-2219
- **Phone:** (636) 256-8644
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): Emergency Physicians Of St. Luke's, LLC (NPI 1215359815, Chesterfield, MO); Premier Medical Physicians LLC (NPI 1417459207, Saint Louis, MO); St Lukes Immediate Care LLC (NPI 1679426514, Creve Coeur, MO); Family Medicine - Slmg South, LLC (NPI 1164077822, Imperial, MO) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2021
## Record status
- **NPPES last updated:** October 30, 2025
- **Other identifiers:** Medicaid 420133789 (MO)
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Source: [NPI Profile](https://npiprofile.com/npi/1952084873) · Data from the CMS NPPES public registry.