DR. ANDREW S OSTER M.D.
NPI 1508200775
Anesthesiology - Pediatric Anesthesiology in Saint Louis, MO
About Dr. Andrew S Oster M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ANDREW S OSTER M.D. (NPI 1508200775) is an individual pediatric anesthesiology provider in Saint Louis, Missouri, licensed in Missouri (2013021775) and active in the NPI registry since April 2013. He is enrolled in Medicare PECOS and is a graduate of Saint Louis University School Of Medicine (2013).
NPPES Registry Identity
Specialties & Licenses
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. Andrew S Oster 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 Andrew Oster 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 63104 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 63104
SAINT LOUIS, MO 63104
ST.LOUIS, MO 63104
SAINT LOUIS, MO 63104
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 Oster's NPI number?
The NPI number for Andrew Oster is 1508200775. It was assigned to this individual provider in the NPPES registry on April 18, 2013.
Where is Andrew Oster located?
Andrew Oster practices at 1465 S Grand Blvd, Saint Louis, MO 63104. The listed phone number is (314) 577-8750.
What is Andrew Oster's specialty?
The primary specialty registered for this NPI is Anesthesiology, specializing in Pediatric Anesthesiology, with taxonomy code 207LP3000X.
Is Andrew Oster enrolled in Medicare?
Yes. Andrew Oster 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 Andrew Oster's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Andrew Oster 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 Andrew Oster's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Andrew Oster accept?
Health plans from Oscar Insurance Company list Andrew Oster 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.
When was this NPI record last updated?
The NPPES record for Andrew Oster was last updated on September 6, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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. Andrew S Oster, M.D. · NPI 1508200775
Pediatric Anesthesiology physician in Saint Louis, Missouri. Individual provider, active in the CMS NPPES registry since April 18, 2013.
## Identity
- **NPI:** 1508200775 (Entity type: Individual)
- **Enumerated:** April 18, 2013
- **Primary specialty:** Anesthesiology - Pediatric Anesthesiology · taxonomy 207LP3000X
- **State license:** 2013021775 (Missouri)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1465 S GRAND BLVD, Saint Louis, MO 63104-1003
- **Phone:** (314) 577-8750 · **Fax:** (314) 268-5102
## 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 2013
## Record status
- **NPPES last updated:** September 6, 2019
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Source: [NPI Profile](https://npiprofile.com/npi/1508200775) · Data from the CMS NPPES public registry.