STEWART SCHAEFER M.D.
NPI 1669867834
Internal Medicine in Austin, TX
About Stewart Schaefer M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
STEWART SCHAEFER M.D. (NPI 1669867834) is an individual internal medicine provider in Austin, Texas, licensed in Texas (R6475) and active in the NPI registry since April 2015. He is enrolled in Medicare PECOS, is affiliated with Ascension Seton Medical Center Austin, and is a graduate of University Of Texas Medical School At San Antonio (2015).
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
Stewart Schaefer 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 Stewart Schaefer reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Austin, TX 78712
- Reassigned Medicare billing, Texas enrollment
- 1,188 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.
Ascension Seton Medical Center Austin
Acute Care Hospitals · Austin, TXDell Seton Med Center At The University Of Tx
Acute Care Hospitals · Austin, TXPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 78701 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.
Referred Medical Equipment & Supplies CMS DME claims 2
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
AUSTIN, TX 78701
AUSTIN, TX 78701
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 Stewart Schaefer's NPI number?
The NPI number for Stewart Schaefer is 1669867834. It was assigned to this individual provider in the NPPES registry on April 3, 2015.
Where is Stewart Schaefer located?
Stewart Schaefer practices at 601 E 15th St, Austin, TX 78701. The listed phone number is (206) 324-7000.
What is Stewart Schaefer's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Stewart Schaefer enrolled in Medicare?
Yes. Stewart Schaefer 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 Stewart Schaefer's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Stewart Schaefer reassigns Medicare benefits to Seton Family Of Doctors (Austin, TX). 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 Stewart Schaefer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Stewart Schaefer accept?
Health plans from Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and Ambetter of Oklahoma and 4 other insurers list Stewart Schaefer 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 Stewart Schaefer affiliated with any hospitals?
According to CMS data, Stewart Schaefer is affiliated with Ascension Seton Medical Center Austin and Dell Seton Med Center At The University Of Tx.
When was this NPI record last updated?
The NPPES record for Stewart Schaefer was last updated on August 12, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Stewart Schaefer, M.D. · NPI 1669867834
Internal Medicine physician in Austin, Texas. Individual provider, active in the CMS NPPES registry since April 3, 2015.
## Identity
- **NPI:** 1669867834 (Entity type: Individual)
- **Enumerated:** April 3, 2015
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** R6475 (Texas)
- **Sole proprietor:** No
## Practice location
- **Address:** 601 E 15TH ST, Austin, TX 78701-1930
- **Phone:** (206) 324-7000
## 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:** Seton Family Of Doctors (NPI 1588997233, Austin, TX), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Texas Medical School At San Antonio, class of 2015
## Record status
- **NPPES last updated:** August 12, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1669867834) · Data from the CMS NPPES public registry.