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

Dr. Johnny Lee Williamson, MD

Individual provider Child & Adolescent Psychiatry Physician · NPI 1144310509

Dr. Johnny Lee Williamson, MD is a Psychiatry in New Lenox, Illinois. Graduated from Meharry Medical College School of Medicine in 1997, 29 years ago. Practices with Connections Medical Group Associates LLC, a 14-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in California, Illinois, Maryland and North Carolina.

Years since qualifying
29
Trained at
Meharry Medical College School of Medicine
Licensed in
CA, IL, MD, NC
In the registry since
2006
Specialties on file
6
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

2081 Calistoga Dr Ste 2S
New Lenox, IL 60451-4831
Phone: (815) 418-6070
Fax: (779) 803-3119
Show map & directions

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

Additional practice locations (1)

  • 3000 New Bern Ave, Raleigh, NC 27610-1231 — (919) 350-8000

Specialties & licences

Child & Adolescent Psychiatry Physician (primary) Taxonomy 2084P0804X · Licence 036100519 (IL)
Child & Adolescent Psychiatry Physician Taxonomy 2084P0804X · Licence 2022-02652 (NC)
Child & Adolescent Psychiatry Physician Taxonomy 2084P0804X · Licence 169712 (CA)
Psychiatry Physician Taxonomy 2084P0800X · Licence D0090783 (MD)
Psychiatry Physician Taxonomy 2084P0800X · Licence 036100519 (IL)
Psychiatry Physician Taxonomy 2084P0800X · Licence 169712 (CA)

Record details

NPI number1144310509
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 13, 2006
Last updated in NPPESDecember 26, 2025
Certification dateDecember 26, 2025
Mailing address2081 Calistoga Dr Ste 2s, New Lenox, IL 60451-4833

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPSYCHIATRY
Also practisesGERIATRIC PSYCHIATRY
Medical schoolMEHARRY MEDICAL COLLEGE SCHOOL OF MEDICINE
Graduated 1997 (29 years in practice)
Group practice Connections Medical Group Associates Llc — 14 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations4 on file with Medicare