Sylvia Emma Keiser, DO
Gastroenterology Physician · San Antonio, TX
Sylvia Emma Keiser, DO is a gastroenterology physician with a practice address in San Antonio, Texas, and NPI 1366063463, issued on Apr 29, 2020. Check the license (Texas W6278, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Sylvia Emma Keiser
- Credential
- DO
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- W6278 TX
Self-reported in NPPES; status is on the state search - Practice location
- 8435 Wurzbach RD, San Antonio, TX 78229
- Phone
- (210) 450-9800
- Enumerated
- Apr 29, 2020
- Record last updated
- Jun 24, 2026
- Medicare enrollment
- Enrolled (PECOS I20260605002841); may accept Medicare assignment
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 1,478 in Texas → Look up another NPI →
Also registered at 8435 Wurzbach RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ginnie Abarbanell, MDPediatric Cardiology Physician1760427371
- Wajid Ali, MDNephrology Physician1942085923
- Andrea Alvarez Eslava, M.D.Endocrinology, Diabetes & Metabolism Physician1154504157
- Layth Alzubaidy, M.D.Gastroenterology Physician1144883380
- Suzanne Ashley, APRNFamily Nurse Practitioner1508539925
- Danielle Dixon, D.O.Infectious Disease Physician1174977078
Verify Sylvia Emma Keiser in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license W6278Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average gastroenterology physician in 2024
19 Medicare Part D claims, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $371.36
11 payments; by number, the most common kind was food and beverage; the largest payer was Janssen Scientific Affairs, LLC. The 13,350 providers of this specialty with any payment received $5,015.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Sylvia Emma Keiser among 1,478 gastroenterology physician records in Texas
Sylvia Emma Keiser, DO is one of 1,478 gastroenterology physician records with a practice address in Texas. 89% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 97% of them.
- NPI issued2020 · 97% of these records are older, 1% newer
- In a Medicare fileYes · 89% of these records are
- In the CMS Doctors and Clinicians fileYes · 79% of these records are
- Graduated2020 · median 2003 among the 1,175 with a school on file
- Record last updated2026 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Texas
There are 1,478 gastroenterology physician records in Texas.
All 1,478 in Texas → Every provider in San Antonio → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Prabhleen Chahal, M.D.San Antonio, TX 782291841265527
- Delbert Chumley, M.D.San Antonio, TX 782291740272962
- Sunil Dwivedi, M.D.San Antonio, TX 782291003854076
- Homero Garza, M.D.San Antonio, TX 782291609831353
- Fred Goldner, MDSan Antonio, TX 782291932193695
- Gary Gossen, M.D.San Antonio, TX 782291124091079
- Leon Kundrotas, MDSan Antonio, TX 782291447287743
- Gabriel Magraner, MDSan Antonio, TX 782291346279452
Common questions
What is Sylvia Emma Keiser, DO's NPI number?
Sylvia Emma Keiser, DO's National Provider Identifier (NPI) is 1366063463, issued on Apr 29, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Sylvia Emma Keiser, DO located?
The NPPES record lists a practice address at 8435 Wurzbach RD, San Antonio, TX, 78229. Phone: (210) 450-9800. Providers update this record themselves, so call before visiting.
How can I verify Sylvia Emma Keiser, DO's license?
NPPES lists Texas license number W6278, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Sylvia Emma Keiser, DO prescribe under Medicare Part D?
In 2024, Sylvia Emma Keiser, DO had 19 Medicare Part D claims; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.