John Lewandowski, PSYD
NPI 1104307917 · Psychologist · Crystal Lake, IL
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Lewandowski, PSYD is a Psychologist provider in Crystal Lake, IL (NPI 1104307917).
Provider details
- NPI number
- 1104307917
- Entity type
- Individual
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Credential
- PSYD
- Sex
- Male
- Sole proprietor
- Yes
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
7 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 1701 E Woodfield Rd Ste 1000Schaumburg, IL 60173-5113Phone: (847) 240-2211Fax: (847) 240-2418
Registry dates
- Enumerated
- 2018-08-29
- Last updated
- 2018-08-29
Frequently asked questions
- What is John Lewandowski's NPI number?
- John Lewandowski's National Provider Identifier (NPI) is 1104307917, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Lewandowski's specialty?
- John Lewandowski is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).
- Where is John Lewandowski located?
- John Lewandowski's practice location on file with NPPES is 350 E Congress Pkwy Ste C, Crystal Lake, IL 60014-6284.
- What is John Lewandowski's phone number?
- The practice phone number listed in the NPPES registry for John Lewandowski is (815) 356-5050.
- Does John Lewandowski accept Medicare?
- John Lewandowski is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Lewandowski's NPI active?
- Yes — John Lewandowski's NPI (1104307917) is active in the NPPES registry as of the last update on 2018-08-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.