DR. BARBARA A ELLZEY MD
NPI 1235116492
Emergency Medicine in Saint Louis, MO
About Dr. Barbara A Ellzey Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. BARBARA A ELLZEY MD (NPI 1235116492) is an individual emergency medicine provider in Saint Louis, Missouri, licensed in Missouri (R9742) and active in the NPI registry since December 2005. She is enrolled in Medicare PECOS, is affiliated with Memorial Hospital, and is a graduate of University Of Texas Southwestern Medical School At Dallas (1978).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 5
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
Dr. Barbara A Ellzey Md 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
3Medicare enrollment records show Barbara Ellzey reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Saint Louis, MO 63122
- Reassigned Medicare billing, Missouri enrollment
- 34 clinicians in this Medicare group
Chesterfield, MO 63017
- Reassigned Medicare billing, Missouri enrollment
- Medicare enrollment name: Emergency Physicians Of St Lukes LLC
- 124 clinicians in this Medicare group
Chester, IL 62233
- Reassigned Medicare billing, Illinois enrollment
- 62 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 4
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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Memorial Hospital
Critical Access Hospitals · Chester, ILSt Lukes Hospital
Acute Care Hospitals · Chesterfield, MOPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 63123 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 7
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAINT LOUIS, MO 63123
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 Barbara Ellzey's NPI number?
The NPI number for Barbara Ellzey is 1235116492. It was assigned to this individual provider in the NPPES registry on December 29, 2005.
Where is Barbara Ellzey located?
Barbara Ellzey practices at 11123 S Towne Sq Suite E, Saint Louis, MO 63123. The listed phone number is (314) 487-4537.
What is Barbara Ellzey's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Barbara Ellzey enrolled in Medicare?
Yes. Barbara Ellzey 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 Barbara Ellzey's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Barbara Ellzey reassigns Medicare benefits to 3 organizations: Premier Medical Physicians LLC (Saint Louis, MO), Emergency Physicians Of St. Luke's, LLC (Chesterfield, MO) and Memorial Hospital (Chester, IL). 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 Barbara Ellzey's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Barbara Ellzey accept?
Health plans from Medica and Oscar Insurance Company list Barbara Ellzey 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 Barbara Ellzey affiliated with any hospitals?
According to CMS data, Barbara Ellzey is affiliated with Memorial Hospital and St Lukes Hospital.
When was this NPI record last updated?
The NPPES record for Barbara Ellzey was last updated on October 14, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.
# Dr. Barbara A Ellzey, MD · NPI 1235116492
Emergency Medicine physician in Saint Louis, Missouri. Individual provider, active in the CMS NPPES registry since December 29, 2005.
## Identity
- **NPI:** 1235116492 (Entity type: Individual)
- **Enumerated:** December 29, 2005
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** R9742 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 11123 S TOWNE SQ, SUITE E, Saint Louis, MO 63123-7816
- **Phone:** (314) 487-4537 · **Fax:** (314) 487-8971
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Premier Medical Physicians LLC (NPI 1417459207, Saint Louis, MO); Emergency Physicians Of St. Luke's, LLC (NPI 1215359815, Chesterfield, MO); Memorial Hospital (NPI 1851390132, Chester, IL) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Texas Southwestern Medical School At Dallas, class of 1978
## Record status
- **NPPES last updated:** October 14, 2008
- **Other identifiers:** Medicare PIN 147400007 (MO); Medicaid 1235116492 (MO); Medicaid 036116352 (IL); and 2 more
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Source: [NPI Profile](https://npiprofile.com/npi/1235116492) · Data from the CMS NPPES public registry.