Walter John Zawislak, MD
Emergency Medicine Physician · Mission, TX
Walter John Zawislak, MD is an emergency medicine physician with a practice address in Mission, Texas, and NPI 1992787568, issued on Nov 18, 2005. Check the license (Texas K8596, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Walter John Zawislak
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- K8596 TX
Self-reported in NPPES; status is on the state search - Practice location
- 900 S Bryan RD, Mission, TX 78572
- Phone
- (956) 580-9000
- Enumerated
- Nov 18, 2005
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicaid ID
- 133633113 TX
- Entity
- Type 1 · individual
Also registered at 900 S Bryan RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Heriberto Alanis, MDEmergency Medicine Physician1770565673
- Cecilia AlmaguerNeonatal Nurse Practitioner1205881562
- Addievi Amper, APNNurse Practitioner1346671401
- Joseph Ballard, CRNACertified Registered Nurse Anesthetist1588688378
- Cesar Barbin, CRNACertified Registered Nurse Anesthetist1982645933
- Juan Bernal, CSFASurgical Assistant1205476280
Verify Walter John Zawislak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license K8596Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average emergency medicine physician in 2024
20 Medicare Part D claims, 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.
10 emergency medicine physician records list a practice address in Mission
They are 10 of the 912 NPPES records with a practice address in Mission, and 4,885 emergency medicine physician records in Texas.
All 10 in Mission → All 4,885 in Texas → Every provider in Mission →
Other emergency medicine physician records in Texas
- Gordon Aalund, MDDallas, TX1740265263
- Kevin AbadiAustin, TX1104403443
- Kelechi AbarikwuHouston, TX1316527609
- George Abatso, MDArlington, TX1265417786
- Lailah Abawi, D.O.Frisco, TX1023274164
- Tazeen AbbasCollege Station, TX1700346962
- Abraham Abbott, MDBellaire, TX1023197175
- Mira Abdel Sattar, DOIrving, TX1417586728
- Mohammed Abdel-Al, M.D., M.S., M.SCHouston, TX1568810679
- Yousef Abdel-Raziq, MDTyler, TX1215432695
Common questions
What is Walter John Zawislak, MD's NPI number?
Walter John Zawislak, MD's National Provider Identifier (NPI) is 1992787568, issued on Nov 18, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Walter John Zawislak, MD located?
The NPPES record lists a practice address at 900 S Bryan RD, Mission, TX, 78572. Phone: (956) 580-9000. Providers update this record themselves, so call before visiting.
How can I verify Walter John Zawislak, MD's license?
NPPES lists Texas license number K8596, 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 Walter John Zawislak, MD prescribe under Medicare Part D?
In 2024, Walter John Zawislak, MD had 20 Medicare Part D claims; 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.