IndividualActive
Stephan Siwiec, PHD
NPI 1487509972 · Clinical Psychologist · Madison, WI
Stephan Siwiec, PHD is a Clinical Psychologist provider in Madison, WI (NPI 1487509972).
Provider details
- NPI number
- 1487509972
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PHD
- Sex
- Male
- Sole proprietor
- No
- License
- 3987-57 (WI)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Established profile(53/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
Under 1 yr in 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
6402 Odana Rd Ste 304
Madison, WI 53719-1123
Phone: (608) 465-4565
Street-level locationGet directions
Mailing address
4501 Bellingrath St
Mcfarland, WI 53558-8752
Registry dates
- Enumerated
- 2026-03-02
- Last updated
- 2026-03-02
- Certified
- 2026-03-02
Frequently asked questions
- What is Stephan Siwiec's NPI number?
- Stephan Siwiec's National Provider Identifier (NPI) is 1487509972, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephan Siwiec's specialty?
- Stephan Siwiec is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Stephan Siwiec located?
- Stephan Siwiec's practice location on file with NPPES is 6402 Odana Rd Ste 304, Madison, WI 53719-1123.
- What is Stephan Siwiec's phone number?
- The practice phone number listed in the NPPES registry for Stephan Siwiec is (608) 465-4565.
- Is Stephan Siwiec's NPI active?
- Yes — Stephan Siwiec's NPI (1487509972) is active in the NPPES registry as of the last update on 2026-03-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.