Walter Diak, PH.D.
NPI 1235446741 · Counseling Psychologist · Clearwater, FL
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Walter Diak, PH.D. is a Counseling Psychologist provider in Clearwater, FL (NPI 1235446741).
Provider details
- NPI number
- 1235446741
- Entity type
- Individual
- Primary specialty
- Counseling PsychologistBehavioral Health & Social Service Providers
- Credential
- PH.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- PY 8129 (FL)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
15 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
Mailing address
Registry dates
- Enumerated
- 2010-09-03
- Last updated
- 2012-03-02
Frequently asked questions
- What is Walter Diak's NPI number?
- Walter Diak's National Provider Identifier (NPI) is 1235446741, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Walter Diak's specialty?
- Walter Diak is listed in the NPPES registry with a primary specialty of Counseling Psychologist (Behavioral Health & Social Service Providers).
- Where is Walter Diak located?
- Walter Diak's practice location on file with NPPES is 28870 US 19 N, Clearwater, FL 33761-2596.
- What is Walter Diak's phone number?
- The practice phone number listed in the NPPES registry for Walter Diak is (727) 280-6569.
- Does Walter Diak accept Medicare?
- Walter Diak is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Walter Diak's NPI active?
- Yes — Walter Diak's NPI (1235446741) is active in the NPPES registry as of the last update on 2012-03-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.