MARY BRIGID HOLLORAN-SCHWARTZ M.D.
NPI 1184655474
Obstetrics & Gynecology in Saint Louis, MO
About Mary Brigid Holloran-schwartz M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARY BRIGID HOLLORAN-SCHWARTZ M.D. (NPI 1184655474) is an individual obstetrics & gynecology provider in Saint Louis, Missouri, licensed in Missouri (110456) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS, is affiliated with Ssm St Joseph Health Center, and is a graduate of Saint Louis University School Of Medicine (1996).
NPPES Registry Identity
Specialties & Licenses 3
Other Names 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
Mary Brigid Holloran-schwartz M.d. 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 Reassignment
Medicare enrollment records show Mary Holloran-schwartz reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Saint Louis, MO 63104
- Reassigned Medicare billing, Missouri enrollment
- 1,294 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
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 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Ssm St Joseph Health Center
Acute Care Hospitals · Saint Charles, MOSsm Health St Mary's Hospital - St Louis
Acute Care Hospitals · Richmond Heights, MOSt Lukes Hospital
Acute Care Hospitals · Chesterfield, MOPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 63117 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAINT LOUIS, MO 63117
SAINT LOUIS, MO 63117
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 Mary Holloran-schwartz's NPI number?
The NPI number for Mary Holloran-schwartz is 1184655474. It was assigned to this individual provider in the NPPES registry on July 5, 2006. The provider is also known as Mary Brigid Holloran.
Where is Mary Holloran-schwartz located?
Mary Holloran-schwartz practices at 1031 Bellevue Ave Suite 400, Saint Louis, MO 63117. The listed phone number is (314) 977-7455.
What is Mary Holloran-schwartz's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is Mary Holloran-schwartz enrolled in Medicare?
Yes. Mary Holloran-schwartz 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 organization bills Medicare for Mary Holloran-schwartz's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Holloran-schwartz reassigns Medicare benefits to Ssm Health Care Group (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 Mary Holloran-schwartz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mary Holloran-schwartz 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 Mary Holloran-schwartz 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 Mary Holloran-schwartz affiliated with any hospitals?
According to CMS data, Mary Holloran-schwartz is affiliated with Ssm St Joseph Health Center, Ssm Health St Mary's Hospital - St Louis and St Lukes Hospital.
When was this NPI record last updated?
The NPPES record for Mary Holloran-schwartz was last updated on August 9, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.
# Mary Brigid Holloran-Schwartz, M.D. · NPI 1184655474
Obstetrics & Gynecology physician in Saint Louis, Missouri. Individual provider, active in the CMS NPPES registry since July 5, 2006.
## Identity
- **NPI:** 1184655474 (Entity type: Individual)
- **Enumerated:** July 5, 2006
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** 110456 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 1031 BELLEVUE AVE, SUITE 400, Saint Louis, MO 63117-1818
- **Phone:** (314) 977-7455 · **Fax:** (314) 977-7477
## 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:** Ssm Health Care Group (NPI 1306589544, Saint Louis, MO), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Saint Louis University School Of Medicine, class of 1996
## Record status
- **NPPES last updated:** August 9, 2010
---
Source: [NPI Profile](https://npiprofile.com/npi/1184655474) · Data from the CMS NPPES public registry.