SYLVIA EMMA KEISER DO
NPI 1366063463
Internal Medicine - Gastroenterology in San Antonio, TX
About Sylvia Emma Keiser Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SYLVIA EMMA KEISER DO (NPI 1366063463) is an individual gastroenterology provider in San Antonio, Texas, licensed in Texas (W6278) and active in the NPI registry since April 2020. She is enrolled in Medicare PECOS, is affiliated with University Health System, and is a graduate of Other (2020).
NPPES Registry Identity
Specialties & Licenses 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Sylvia Emma Keiser Do is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
University Health System
Acute Care Hospitals · San Antonio, TXPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 78229 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
SAN ANTONIO, TX 78229
SAN ANTONIO, TX 78229
SAN ANTONIO, TX 78229
SAN ANTONIO, TX 78229
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 Sylvia Keiser's NPI number?
The NPI number for Sylvia Keiser is 1366063463. It was assigned to this individual provider in the NPPES registry on April 29, 2020.
Where is Sylvia Keiser located?
Sylvia Keiser practices at 8435 Wurzbach Rd, San Antonio, TX 78229. The listed phone number is (210) 450-9800.
What is Sylvia Keiser's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.
Is Sylvia Keiser enrolled in Medicare?
Yes. Sylvia Keiser is registered in the Medicare PECOS enrollment system.
Is Sylvia Keiser affiliated with any hospitals?
According to CMS data, Sylvia Keiser is affiliated with University Health System.
When was this NPI record last updated?
The NPPES record for Sylvia Keiser was last updated on June 24, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 46 days 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.
# Sylvia Emma Keiser, DO · NPI 1366063463
Gastroenterology physician in San Antonio, Texas. Individual provider, active in the CMS NPPES registry since April 29, 2020.
## Identity
- **NPI:** 1366063463 (Entity type: Individual)
- **Enumerated:** April 29, 2020
- **Primary specialty:** Internal Medicine - Gastroenterology · taxonomy 207RG0100X
- **State license:** W6278 (Texas)
- **Sole proprietor:** No
## Practice location
- **Address:** 8435 WURZBACH RD, San Antonio, TX 78229-3921
- **Phone:** (210) 450-9800
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Medical school:** Other, class of 2020
## Record status
- **NPPES last updated:** June 24, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1366063463) · Data from the CMS NPPES public registry.