DR. MARY S FALLER MD
NPI 1942271796
Anesthesiology in Saint Louis, MO
About Dr. Mary S Faller Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARY S FALLER MD (NPI 1942271796) is an individual anesthesiology provider in Saint Louis, Missouri, licensed in Missouri (115335) and active in the NPI registry since January 2006. She is enrolled in Medicare PECOS, is affiliated with Mercy Hospital St Louis, and is a graduate of University Of Missouri, Columbia School Of Medicine (1998).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
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. Mary S Faller 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 Reassignment
Medicare enrollment records show Mary Faller reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Saint Louis, MO 63141
- Reassigned Medicare billing, Missouri enrollment
- 309 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mercy Hospital St Louis
Acute Care Hospitals · Saint Louis, MOOther 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 63141
SAINT LOUIS, MO 63141
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 Faller's NPI number?
The NPI number for Mary Faller is 1942271796. It was assigned to this individual provider in the NPPES registry on January 30, 2006.
Where is Mary Faller located?
Mary Faller practices at 615 S New Ballas Rd Sjmmc - Dept. Of Anesthesia, Saint Louis, MO 63141. The listed phone number is (636) 386-9224.
What is Mary Faller's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Mary Faller enrolled in Medicare?
Yes. Mary Faller 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 Faller's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Faller reassigns Medicare benefits to Western Anesthesiology Associates, Inc. (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 Faller's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Mary Faller affiliated with any hospitals?
According to CMS data, Mary Faller is affiliated with Mercy Hospital St Louis.
When was this NPI record last updated?
The NPPES record for Mary Faller was last updated on October 30, 2007. 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. Mary S Faller, MD · NPI 1942271796
Anesthesiology physician in Saint Louis, Missouri. Individual provider, active in the CMS NPPES registry since January 30, 2006.
## Identity
- **NPI:** 1942271796 (Entity type: Individual)
- **Enumerated:** January 30, 2006
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 115335 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 615 S NEW BALLAS RD, SJMMC - DEPT. OF ANESTHESIA, Saint Louis, MO 63141-8221
- **Phone:** (636) 386-9224 · **Fax:** (636) 386-9224
## 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:** Western Anesthesiology Associates, Inc. (NPI 1275646754, Saint Louis, MO), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Missouri, Columbia School Of Medicine, class of 1998
## Record status
- **NPPES last updated:** October 30, 2007
- **Other identifiers:** Medicare UPIN H93610 (MO)
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Source: [NPI Profile](https://npiprofile.com/npi/1942271796) · Data from the CMS NPPES public registry.