What is Walter Zawislak's NPI number?

Walter Zawislak's National Provider Identifier (NPI) is 1992787568, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Walter Zawislak's specialty?

Walter Zawislak is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).

Where is Walter Zawislak located?

Walter Zawislak's practice location on file with NPPES is 900 S Bryan Rd, Mission, TX 78572-6613.

What is Walter Zawislak's phone number?

The practice phone number listed in the NPPES registry for Walter Zawislak is (956) 580-9000.

Is Walter Zawislak's NPI active?

Yes — Walter Zawislak's NPI (1992787568) is active in the NPPES registry as of the last update on 2007-07-08.

IndividualActive

Walter Zawislak, MD

NPI 1992787568 · Emergency Medicine Physician · Mission, TX

Walter Zawislak, MD is a Emergency Medicine Physician provider in Mission, TX (NPI 1992787568).

Provider details

NPI number: 1992787568
Entity type: Individual
Primary specialty: Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Male
Sole proprietor: No
License: K8596 (TX)

Practice location

900 S Bryan Rd

Mission, TX 78572-6613

Phone: (956) 580-9000

Street-level locationGet directions

More TX providers

Mailing address

3601 N Bicentennial Blvd

Mcallen, TX 78501-3804

Specialties & taxonomies

Emergency Medicine PhysicianPrimary207P00000XLicense K8596 (TX)
Allopathic & Osteopathic Physicians

Profile Score

Detailed profile(91/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
20 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
1 documented practice location

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Enumerated: 2005-11-18
Last updated: 2007-07-08

Frequently asked questions

What is Walter Zawislak's NPI number?: Walter Zawislak's National Provider Identifier (NPI) is 1992787568, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Walter Zawislak's specialty?: Walter Zawislak is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
Where is Walter Zawislak located?: Walter Zawislak's practice location on file with NPPES is 900 S Bryan Rd, Mission, TX 78572-6613.
What is Walter Zawislak's phone number?: The practice phone number listed in the NPPES registry for Walter Zawislak is (956) 580-9000.
Is Walter Zawislak's NPI active?: Yes — Walter Zawislak's NPI (1992787568) is active in the NPPES registry as of the last update on 2007-07-08.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

Registry dates

Frequently asked questions

Specialties & taxonomies

Profile Score

Frequently asked questions