Doctor profile · Federal record
Dr. James Marks, M.D.
Psychiatry Physician (CMS: Neuropsychiatry) · Vernon Hills, IL
- NPI 1841305018
- Accepts Medicare
- 38 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
977 Lakeview Pkwy, Suite 170
Vernon Hills, IL 600611400
(847) 367-1611
fax (847) 367-4079 - Additional location
-
977 Lakeview Pkwy Ste 190
Vernon Hills, IL 600611429
(847) 592-4447
fax (847) 881-0191
Credentials & registration
- NPI registered
- August 2006 — 20 yrs on file
- Profile last updated
- October 21, 2025
- Year of graduation
- 1988 — 38 yrs since
- Specialty taxonomy
- 2084P0800X — NUCC code
- State license (1)
- Illinois #036-080975
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1841305018. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
445
Distinct HCPCS
1
Medicare allowed
$41,645
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 445 | 135 | $94 |
In context: peer comparison
Among 4 peers in Vernon Hills Psychiatry Physician, average services per provider: 256. This provider delivers 1.7× the peer median.Open Payments
Industry payments received
All-time total
$2,168
Transactions
4
Manufacturers
2
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Abbvie INC. | 3 | $2,153.35 | |
| Brainsway USA INC | 1 | $14.21 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,960
Patients
305
Total drug cost
$43,311
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Bupropion Xl (Bupropion Hcl) | Brand | 296 | 64 | $10,484 |
| Sertraline Hcl | Generic | 223 | 37 | $2,115 |
| Trazodone Hcl | Generic | 208 | 40 | $5,964 |
| Fluoxetine Hcl | Generic | 169 | 22 | $1,989 |
| Escitalopram Oxalate | Generic | 135 | 25 | $1,979 |
| Risperidone | Generic | 134 | 0 | $1,167 |
| Buspirone Hcl | Generic | 125 | 23 | $2,579 |
| Duloxetine Hcl | Generic | 112 | 27 | $5,210 |
| Lorazepam | Generic | 99 | 16 | $762 |
| Lamotrigine | Generic | 95 | 18 | $1,440 |
Frequently asked questions
What is Dr. James Marks's medical specialty?
Dr. James Marks practices Psychiatry Physician in Vernon Hills, IL.
Where does Dr. James Marks practice?
Dr. James Marks practices at 977 Lakeview Pkwy, Vernon Hills, IL 600611400. Office phone: 8473671611.
What is Dr. James Marks's NPI?
Dr. James Marks's National Provider Identifier (NPI) is 1841305018, issued by NPPES.
Does Dr. James Marks accept Medicare assignment?
Yes. Dr. James Marks accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. James Marks commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.