SETH NELSON MD
NPI 1669828646
Anesthesiology in Marble Falls, TX
About Seth Nelson Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SETH NELSON MD (NPI 1669828646) is an individual anesthesiology provider in Marble Falls, Texas, licensed in Texas (S0034) and active in the NPI registry since May 2016. He is enrolled in Medicare PECOS, is affiliated with St David's South Austin Medical Center, and maintains a secondary practice location in Dallas.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 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
Seth Nelson 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 Reassignments
2Medicare enrollment records show Seth Nelson reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Austin, TX 78759
- Reassigned Medicare billing, Texas enrollment
- 840 clinicians in this Medicare group
Pflugerville, TX 78660
- Reassigned Medicare billing, Texas enrollment
- 2,795 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 3
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.
St David's South Austin Medical Center
Acute Care Hospitals · Austin, TXRound Rock Medical Center
Acute Care Hospitals · Round Rock, TXNorth Austin Medical Center
Acute Care Hospitals · Austin, TXOther Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
MARBLE FALLS, TX 78654
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 Seth Nelson's NPI number?
The NPI number for Seth Nelson is 1669828646. It was assigned to this individual provider in the NPPES registry on May 10, 2016.
Where is Seth Nelson located?
Seth Nelson practices at 810 W Highway 71, Marble Falls, TX 78654. The listed phone number is (830) 201-8000.
What is Seth Nelson's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Seth Nelson enrolled in Medicare?
Yes. Seth Nelson 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 Seth Nelson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Seth Nelson reassigns Medicare benefits to 2 organizations: Austin Anesthesiology Group, PLLC (Austin, TX) and Scott & White Clinic (Pflugerville, TX). 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 Seth Nelson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Seth Nelson accept?
Health plans from Blue Cross and Blue Shield of Texas and Sendero Health Plans, Local Nonprofit list Seth Nelson 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 Seth Nelson affiliated with any hospitals?
According to CMS data, Seth Nelson is affiliated with St David's South Austin Medical Center, Round Rock Medical Center and North Austin Medical Center.
When was this NPI record last updated?
The NPPES record for Seth Nelson was last updated on January 20, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.
# Seth Nelson, MD · NPI 1669828646
Anesthesiology physician in Marble Falls, Texas. Individual provider, active in the CMS NPPES registry since May 10, 2016.
## Identity
- **NPI:** 1669828646 (Entity type: Individual)
- **Enumerated:** May 10, 2016
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** S0034 (Texas)
- **Sole proprietor:** No
## Practice location
- **Address:** 810 W HIGHWAY 71, Marble Falls, TX 78654-8602
- **Phone:** (830) 201-8000 · **Fax:** (830) 201-8008
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Austin Anesthesiology Group, PLLC (NPI 1598724304, Austin, TX); Scott & White Clinic (NPI 1679691729, Pflugerville, TX) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Texas Medical Branch At Galveston, class of 2016
## Record status
- **NPPES last updated:** January 20, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1669828646) · Data from the CMS NPPES public registry.