Dr Johnny Lee Williamson, MD - Medicare Psychiatry in New Lenox, IL

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Dr Johnny Lee Williamson, MD is a medicare enrolled "Psychiatry & Neurology - Child & Adolescent Psychiatry" physician in New Lenox, Illinois. He went to Meharry Medical College School Of Medicine and graduated in 1997 and has 28 years of diverse experience with area of expertise as Psychiatry. He is a member of the group practice Connections Medical Group Associates Llc, Regional Hospital Healthcare Partners Llc, Carson Tahoe Physician Clinics and his current practice location is 2081 Calistoga Dr, Suite 2s, New Lenox, Illinois. You can reach out to his office (for appointments etc.) via phone at (815) 418-6070.

Dr Johnny Lee Williamson is licensed to practice in Illinois (license number 036100519) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1144310509.

Contact Information

Dr Johnny Lee Williamson, MD
2081 Calistoga Dr, Suite 2s,
New Lenox, IL 60451-4831
(815) 418-6070
(779) 803-3119

Map and Direction




Physician's Profile

Full NameDr Johnny Lee Williamson
GenderMale
SpecialityPsychiatry
Experience28 Years
Location2081 Calistoga Dr, New Lenox, Illinois
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr Johnny Lee Williamson attended and graduated from Meharry Medical College School Of Medicine in 1997
  NPI Data:
  • NPI Number: 1144310509
  • Provider Enumeration Date: 10/13/2006
  • Last Update Date: 09/22/2025
  Medicare PECOS Information:
  • PECOS PAC ID: 9335277631
  • Enrollment ID: I20100506000811

Medical Identifiers

Medical identifiers for Dr Johnny Lee Williamson such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1144310509NPI-NPPES
036100519MedicaidIL

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
2084P0804XPsychiatry & Neurology - Child & Adolescent Psychiatry 2022-02652 (North Carolina)Secondary
2084P0804XPsychiatry & Neurology - Child & Adolescent Psychiatry 169712 (California)Secondary
2084P0804XPsychiatry & Neurology - Child & Adolescent Psychiatry 036100519 (Illinois)Primary
2084P0800XPsychiatry & Neurology - Psychiatry 036100519 (Illinois)Secondary
2084P0800XPsychiatry & Neurology - Psychiatry 169712 (California)Secondary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Adventist Hinsdale HospitalHinsdale, ILHospital
Carson Tahoe Regional Medical CenterCarson city, NVHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Connections Medical Group Associates Llc236566251718
Regional Hospital Healthcare Partners Llc145649944115
Carson Tahoe Physician Clinics1153479027109

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Dr Johnny Lee Williamson allows following entities to bill medicare on his behalf.
Entity NameUhs Of Hartgrove, Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1396012951
PECOS PAC ID: 3173611738
Enrollment ID: O20120817000145
Entity NameConnections Medical Group Associates Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1548697618
PECOS PAC ID: 2365662517
Enrollment ID: O20141009002643

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Dr Johnny Lee Williamson is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Dr Johnny Lee Williamson, MD
2081 Calistoga Dr Ste 2s,
New Lenox, IL 60451-4833

Ph: (815) 418-6070		Dr Johnny Lee Williamson, MD
2081 Calistoga Dr, Suite 2s,
New Lenox, IL 60451-4831

Ph: (815) 418-6070

Reviews and Comments


Psychiatry & Neurology Doctors in New Lenox, IL

Arlene Angela Paden, M.D.
Psychiatry & Neurology
Medicare: Accepting Medicare Assignments
Practice Location: 2081 Calistoga Dr, Suite 2s, New Lenox, IL 60451
Phone: 815-418-6070    Fax: 779-803-3119
Bassel Kazkaz, MD
Psychiatry & Neurology
Medicare: Accepting Medicare Assignments
Practice Location: 1890 Silver Cross Blvd Ste 345, New Lenox, IL 60451
Phone: 630-933-4056    Fax: 630-933-4057
Dr. Charles R Harris, MD
Psychiatry & Neurology
Medicare: Medicare Enrolled
Practice Location: 12230 Cashlenan Ln, New Lenox, IL 60451
Phone: 815-463-8994    Fax: 815-463-8946

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.