ANDREW J RIESTER M.D.
NPI 1336450188
Anesthesiology in Saint Louis, MO
About Andrew J Riester M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ANDREW J RIESTER M.D. (NPI 1336450188) is an individual anesthesiology provider in Saint Louis, Missouri, licensed in Missouri (2010017083) and active in the NPI registry since June 2010. He is enrolled in Medicare PECOS, is affiliated with Mercy Catholic Medical Center- Mercy Fitzgerald, and is a graduate of University Of Arkansas College Of Medicine (2010).
NPPES Registry Identity
Specialties & Licenses
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
Andrew J Riester 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 Reassignments
3Medicare enrollment records show Andrew Riester reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Hazleton, PA 18201
- Reassigned Medicare billing, Pennsylvania enrollment
- Medicare enrollment name: Hazleton Anesthesia Services PC
- 81 clinicians in this Medicare group
Darby, PA 19023
- Reassigned Medicare billing, Pennsylvania enrollment
- 140 clinicians in this Medicare group
Darby, PA 19023
- Reassigned Medicare billing, Pennsylvania enrollment
- 400 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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mercy Catholic Medical Center- Mercy Fitzgerald
Acute Care Hospitals · Darby, PAMedicare 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 6
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
ST. LOUIS, MO 63103
SAINT LOUIS, MO 63103
SAINT LOUIS, MO 63103
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 Andrew Riester's NPI number?
The NPI number for Andrew Riester is 1336450188. It was assigned to this individual provider in the NPPES registry on June 27, 2010.
Where is Andrew Riester located?
Andrew Riester practices at 1 N Grand Blvd, Saint Louis, MO 63103. The listed phone number is (479) 462-8224.
What is Andrew Riester's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Andrew Riester enrolled in Medicare?
Yes. Andrew Riester 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 Andrew Riester's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Andrew Riester reassigns Medicare benefits to 3 organizations: Hazleton Anesthesia Services, P.C. (Hazleton, PA), Cep America - Anesthesia PC (Darby, PA) and Northstar Anesthesia Of Pennsylvania, LLC (Darby, PA). 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 Andrew Riester's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Andrew Riester affiliated with any hospitals?
According to CMS data, Andrew Riester is affiliated with Mercy Catholic Medical Center- Mercy Fitzgerald.
When was this NPI record last updated?
The NPPES record for Andrew Riester was last updated on September 29, 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.
# Andrew J Riester, M.D. · NPI 1336450188
Anesthesiology physician in Saint Louis, Missouri. Individual provider, active in the CMS NPPES registry since June 27, 2010.
## Identity
- **NPI:** 1336450188 (Entity type: Individual)
- **Enumerated:** June 27, 2010
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 2010017083 (Missouri)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1 N GRAND BLVD, Saint Louis, MO 63103-2006
- **Phone:** (479) 462-8224
## 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): Hazleton Anesthesia Services, P.C. (NPI 1073841698, Hazleton, PA); Cep America - Anesthesia PC (NPI 1013807247, Darby, PA); Northstar Anesthesia Of Pennsylvania, LLC (NPI 1700218989, Darby, PA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Arkansas College Of Medicine, class of 2010
## Record status
- **NPPES last updated:** September 29, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1336450188) · Data from the CMS NPPES public registry.