Thomas Marx, PHD
NPI 1790895233 · Clinical Psychologist · Greenfield, WI
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thomas Marx, PHD is a Clinical Psychologist provider in Greenfield, WI (NPI 1790895233).
Provider details
- NPI number
- 1790895233
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PHD
- Sex
- Male
- Sole proprietor
- No
- License
- 594057 (WI)
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
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
Mailing address
Registry dates
- Enumerated
- 2006-08-30
- Last updated
- 2007-07-09
Frequently asked questions
- What is Thomas Marx's NPI number?
- Thomas Marx's National Provider Identifier (NPI) is 1790895233, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas Marx's specialty?
- Thomas Marx is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Thomas Marx located?
- Thomas Marx's practice location on file with NPPES is 4848 S 76th St, Greenfield, WI 53220-4361.
- What is Thomas Marx's phone number?
- The practice phone number listed in the NPPES registry for Thomas Marx is (414) 325-7741.
- Does Thomas Marx accept Medicare?
- Thomas Marx is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thomas Marx's NPI active?
- Yes — Thomas Marx's NPI (1790895233) is active in the NPPES registry as of the last update on 2007-07-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.