Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Les Perkowski, DO

Individual provider Psychiatry Physician · NPI 1710955604

Dr. Les Perkowski, DO is a Psychiatry Physician in Dixon, Illinois. Licensed in Illinois. Registered with an NPI since 2006.

Licensed in
IL
In the registry since
2006
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

See every abbreviation used in this directory →

Practice location Address checks out

403 E 1st St
Dixon, IL 61021-3116
Phone: (815) 285-5635
Fax: (815) 285-5851
Show map & directions

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

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X (IL)

Record details

NPI number1710955604
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedMarch 8, 2006
Last updated in NPPESJuly 13, 2026
Mailing address403 E 1st St, Dixon, IL 61021-3116