Chad Siewers, DO
Emergency Medicine Physician · San Antonio, TX
Chad Siewers, DO is an emergency medicine physician with a practice address in San Antonio, Texas, and NPI 1316487903, issued on Mar 1, 2017. Check the license (Texas U2323, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Chad Siewers
- Credential
- DO
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- U2323 TX
0102205630 VA
Self-reported in NPPES; status is on the state search - Practice location
- 3551 Roger Brooke Dr, San Antonio, TX 78234
- Phone
- (210) 916-4141
- Enumerated
- Mar 1, 2017
- Record last updated
- Feb 26, 2024
- Medicare enrollment
- Enrolled (PECOS I20230614003973); accepts Medicare assignment
- Medical or professional school
- Edward Via Col Of Osteo Medicine-Virginia Campus, 2017
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 4,885 in Texas → Look up another NPI →
Also registered at 3551 Roger Brooke Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Richard Adams, RNRegistered Nurse1861202160
- Thomas Adams, MDAnatomic Pathology & Clinical Pathology Physician1215050497
- Jamilia Adams-Henderson, CRNACertified Registered Nurse Anesthetist1518211176
- Mabel Aguirre, IDMTIndependent Duty Medical Technicians1083009179
- Alejandro Alejandrez CisnerosGeneral Practice Physician1518568161
Verify Chad Siewers in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license U2323Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% fewer Medicare Part D claims than the average emergency medicine physician in 2024
35 Medicare Part D claims for 21 beneficiaries, against an average of 226 among the 54,106 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.
Bills Medicare through 2 group practices
- Comal Emergency Physicians PLLCNew Braunfels, TX
- Emergency Medicine Services OF TX, PLLCLive Oak, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Chad Siewers among 4,885 emergency medicine physician records in Texas
Chad Siewers, DO is one of 4,885 emergency medicine physician records with a practice address in Texas. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 74% of them.
- NPI issued2017 · 74% of these records are older, 23% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2017 · median 2013 among the 2,779 with a school on file
- Record last updated2024 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
400 emergency medicine physician records list a practice address in San Antonio
They are 400 of the 37,749 NPPES records with a practice address in San Antonio, and 4,885 emergency medicine physician records in Texas.
All 4,885 in Texas → Every provider in San Antonio → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Eric Chin, M.D.Fort Sam Houston, TX 782341447240411
- Marc Daymude, M.D.Fort Sam Houston, TX 782341821089806
- Gary Dufresne, DOFort Sam Houston, TX 782341689664930
- David Foss, MDSan Antonio, TX 782341669454880
- Guyon Hill, M.D.Fort Sam Houston, TX 782341629059316
- Michael Hilliard, MDFort Sam Houston, TX 782341538140397
- Curtis Hunter, M.D.Fort Sam Houston, TX 782341447241427
- Sean Meadows, M.D.Fort Sam Houston, TX 782341770560039
Common questions
What is Chad Siewers, DO's NPI number?
Chad Siewers, DO's National Provider Identifier (NPI) is 1316487903, issued on Mar 1, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Chad Siewers, DO located?
The NPPES record lists a practice address at 3551 Roger Brooke Dr, San Antonio, TX, 78234. Phone: (210) 916-4141. Providers update this record themselves, so call before visiting.
How can I verify Chad Siewers, DO's license?
NPPES lists Texas license number U2323, 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 Chad Siewers, DO prescribe under Medicare Part D?
In 2024, Chad Siewers, DO had 35 Medicare Part D claims for 21 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.