Philip Liethen, PHD
NPI 1689659526 · Clinical Neuropsychologist · Fort Gratiot, MI
Philip Liethen, PHD is a Clinical Neuropsychologist provider in Fort Gratiot, MI (NPI 1689659526).
Provider details
- NPI number
- 1689659526
- Entity type
- Individual
- Primary specialty
- Clinical NeuropsychologistBehavioral Health & Social Service Providers
- Credential
- PHD
- Sex
- Male
- License
- 3063 (MI)
Specialties & taxonomies
Behavioral Health & Social Service Providers
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
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-12-14
- Last updated
- 2007-07-08
Frequently asked questions
- What is Philip Liethen's NPI number?
- Philip Liethen's National Provider Identifier (NPI) is 1689659526, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Philip Liethen's specialty?
- Philip Liethen is listed in the NPPES registry with a primary specialty of Clinical Neuropsychologist (Behavioral Health & Social Service Providers).
- Where is Philip Liethen located?
- Philip Liethen's practice location on file with NPPES is 2616 Whitney Pl, Fort Gratiot, MI 48059-3952.
- What is Philip Liethen's phone number?
- The practice phone number listed in the NPPES registry for Philip Liethen is (586) 246-5746.
- Is Philip Liethen's NPI active?
- Yes — Philip Liethen's NPI (1689659526) 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.