Lewis Okun, PH.D.
NPI 1265581458 · Clinical Psychologist · Ann Arbor, MI
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lewis Okun, PH.D. is a Clinical Psychologist provider in Ann Arbor, MI (NPI 1265581458).
Provider details
- NPI number
- 1265581458
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PH.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 6301002860 (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
- 2007-01-09
- Last updated
- 2022-09-08
- Certified
- 2022-09-08
Frequently asked questions
- What is Lewis Okun's NPI number?
- Lewis Okun's National Provider Identifier (NPI) is 1265581458, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lewis Okun's specialty?
- Lewis Okun is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Lewis Okun located?
- Lewis Okun's practice location on file with NPPES is 2301 S Huron Pkwy Ste 3a, Ann Arbor, MI 48104-5133.
- What is Lewis Okun's phone number?
- The practice phone number listed in the NPPES registry for Lewis Okun is (734) 223-1248.
- Does Lewis Okun accept Medicare?
- Lewis Okun is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lewis Okun's NPI active?
- Yes — Lewis Okun's NPI (1265581458) is active in the NPPES registry as of the last update on 2022-09-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.