Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.

Dr. Chet F Lesniak, PHD

Individual provider Clinical Child & Adolescent Psychologist · NPI 1164575064

Dr. Chet F Lesniak, PHD is a Clinical Child & Adolescent Psychologist in Portsmouth, New Hampshire. Practices as a sole proprietor. Licensed in New Hampshire and New York.

Licensed in
NH, NY
In the registry since
2007
Specialties on file
15
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

See every abbreviation used in this directory →

Practice location Address checks out

7 Portwalk Pl Unit 1229
Portsmouth, NH 03801-7003
Phone: (603) 437-2069
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X · Licence 011086 (NY)
Clinical Child & Adolescent Psychologist Taxonomy 103TC2200X · Licence 999 (NH)
Health Service Psychologist Taxonomy 103TH0100X · Licence 011086 (NY)
Health Service Psychologist Taxonomy 103TH0100X · Licence 999 (NH)
Intellectual & Developmental Disabilities Psychologist Taxonomy 103TM1800X · Licence 999 (NH)
Clinical Neuropsychologist Taxonomy 103G00000X · Licence 011086 (NY)
Clinical Neuropsychologist Taxonomy 103G00000X · Licence 999 (NH)
Psychologist Taxonomy 103T00000X · Licence 999 (NH)
Adult Development & Aging Psychologist Taxonomy 103TA0700X · Licence 011086 (NY)
Adult Development & Aging Psychologist Taxonomy 103TA0700X · Licence 999 (NH)
Cognitive & Behavioral Psychologist Taxonomy 103TB0200X · Licence 011086 (NY)
Cognitive & Behavioral Psychologist Taxonomy 103TB0200X · Licence 999 (NH)
Clinical Psychologist Taxonomy 103TC0700X · Licence 011086 (NY)
Clinical Psychologist Taxonomy 103TC0700X · Licence 999 (NH)
Clinical Child & Adolescent Psychologist Taxonomy 103TC2200X · Licence 011086 (NY)

Record details

NPI number1164575064
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedJanuary 22, 2007
Last updated in NPPESJune 24, 2022
Certification dateJune 24, 2022

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients50
Services billed 306 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.