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Mark Viator, LCSW
NPI 1679691174 · Clinical Social Worker · Austin, TX
Mark Viator, LCSW is a Clinical Social Worker provider in Austin, TX (NPI 1679691174).
Provider details
- NPI number
- 1679691174
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Male
- Sole proprietor
- Yes
- License
- 30524 (TX)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(89/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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.
Practice location
3215 Steck Ave
Suite 100
Austin, TX 78757-7566
Phone: (512) 452-2929
Fax: (512) 452-5656
Street-level locationGet directions
Mailing address
5204 Greenheart Dr
Austin, TX 78745-2283
Registry dates
- Enumerated
- 2007-03-26
- Last updated
- 2007-07-08
Frequently asked questions
- What is Mark Viator's NPI number?
- Mark Viator's National Provider Identifier (NPI) is 1679691174, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Viator's specialty?
- Mark Viator is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Mark Viator located?
- Mark Viator's practice location on file with NPPES is 3215 Steck Ave, Austin, TX 78757-7566.
- What is Mark Viator's phone number?
- The practice phone number listed in the NPPES registry for Mark Viator is (512) 452-2929.
- Is Mark Viator's NPI active?
- Yes — Mark Viator's NPI (1679691174) 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.