William Nason, M.S.
NPI 1851513378 · Clinical Psychologist · Grand Blanc, MI
William Nason, M.S. is a Clinical Psychologist provider in Grand Blanc, MI (NPI 1851513378).
Provider details
- NPI number
- 1851513378
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- M.S.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 6301003841 (MI)
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
- 2007-05-03
- Last updated
- 2015-07-28
Frequently asked questions
- What is William Nason's NPI number?
- William Nason's National Provider Identifier (NPI) is 1851513378, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Nason's specialty?
- William Nason is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is William Nason located?
- William Nason's practice location on file with NPPES is 5207 Wishing Well Dr, Grand Blanc, MI 48439-4373.
- What is William Nason's phone number?
- The practice phone number listed in the NPPES registry for William Nason is (586) 263-8700.
- Is William Nason's NPI active?
- Yes — William Nason's NPI (1851513378) is active in the NPPES registry as of the last update on 2015-07-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.