Doctor profile · Federal record
Dr. Johnny Williamson, MD
Child & Adolescent Psychiatry Physician (CMS: Psychiatry) · Child & Adolescent Psychiatry Physician · Child & Adolescent Psychiatry Physician · Psychiatry Physician · Psychiatry Physician · Psychiatry Physician · New Lenox, IL
- NPI 1144310509
- Accepts Medicare
- 29 yrs in practice
- Licensed in 4 states
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
2081 Calistoga Dr, Suite 2S
New Lenox, IL 604514831
(815) 418-6070
fax (779) 803-3119 - Additional location
-
3000 New Bern Ave
Raleigh, NC 276101231
(919) 350-8000
fax (919) 350-7204 - Mailing address
-
2081 Calistoga Dr Ste 2S
New Lenox, IL 604514833
Credentials & registration
- NPI registered
- October 2006 — 20 yrs on file
- Profile last updated
- December 26, 2025
- Year of graduation
- 1997 — 29 yrs since
- Specialty taxonomy
- 2084P0804X — NUCC code
- State licenses (4)
- Illinois #036100519 · North Carolina #2022-02652 · California #169712 · Maryland #D0090783
- Medicaid
- IL #036100519
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1144310509. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
63
Distinct HCPCS
1
Medicare allowed
$8,181
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
90837 |
Psychotherapy, 1 hour | 63 | 23 | $130 |
In context: peer comparison
Among 1 peers in New Lenox Child & Adolescent Psychiatry Physician, average services per provider: 63. This provider delivers 1.0× the peer median.Open Payments
Industry payments received
All-time total
$55
Transactions
3
Manufacturers
3
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Iti, INC. (D/B/A Intra-Cellular Therapies, INC.) | 1 | $23.75 | |
| Lundbeck LLC | 1 | $16.04 | |
| Otsuka America Pharmaceutical, INC. | 1 | $14.95 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
39
Patients
0
Total drug cost
$1,425
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Fluvoxamine Maleate | Generic | 17 | 0 | $687 |
| Clonazepam | Generic | 11 | 0 | $210 |
| Gabapentin | Generic | 11 | 0 | $528 |
Frequently asked questions
What is Dr. Johnny Williamson's medical specialty?
Dr. Johnny Williamson practices Child & Adolescent Psychiatry Physician in New Lenox, IL.
Where does Dr. Johnny Williamson practice?
Dr. Johnny Williamson practices at 2081 Calistoga Dr, New Lenox, IL 604514831. Office phone: 8154186070.
What is Dr. Johnny Williamson's NPI?
Dr. Johnny Williamson's National Provider Identifier (NPI) is 1144310509, issued by NPPES.
Does Dr. Johnny Williamson accept Medicare assignment?
Yes. Dr. Johnny Williamson accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Johnny Williamson commonly perform?
Top Medicare-reported procedures in 2023: Psychotherapy (HCPCS 90837). Source: CMS Medicare Physician & Other Practitioners file.