Doctor profile · Federal record
Dr. Gerald Lewis, CNS, BC
Psychiatric/Mental Health Clinical Nurse Specialist (CMS: Certified Clinical Nurse Specialist (CNS)) · Merrillville, IN
- NPI 1639279177
- Accepts Medicare
- 22 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
9120 Connecticut St Ste A
Merrillville, IN 464107015
(219) 793-1233
fax (219) 793-1244 - Additional location
-
3000 Murvihill RD
Valparaiso, IN 463835960
(219) 286-3907
fax (219) 286-3911
Credentials & registration
- NPI registered
- September 2006 — 20 yrs on file
- Profile last updated
- November 13, 2023
- Year of graduation
- 2004 — 22 yrs since
- Specialty taxonomy
- 364SP0808X — NUCC code
- State license (1)
- Indiana #70000167
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1639279177. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
939
Distinct HCPCS
4
Medicare allowed
$76,999
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 529 | 261 | $69 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 352 | 169 | $99 | |
90833 |
Psychotherapy with evaluation and management visit, 30 minutes | 35 | 18 | $54 | |
90792 |
Psychiatric diagnostic evaluation with medical services | 23 | 23 | $158 |
In context: peer comparison
Among 2 peers in this city , average services per provider: 167. This provider delivers 5.6× the peer median.Open Payments
Industry payments received
All-time total
$84,279
Transactions
287
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Neurocrine Biosciences, Inc. | 32 | $30,910.26 | |
| Axsome Therapeutics, Inc. | 33 | $15,273.53 | |
| Otsuka America Pharmaceutical, Inc. | 50 | $14,714.62 | |
| ABBVIE INC. | 35 | $8,564.54 | |
| Janssen Pharmaceuticals, Inc | 20 | $6,706.31 | |
| Almatica Pharma LLC | 27 | $5,584.22 | |
| ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.) | 15 | $478.95 | |
| JAZZ PHARMACEUTICALS INC. | 7 | $279.20 | |
| Corium, LLC | 11 | $257.57 | |
| Avadel CNS Pharmaceuticals, LLC | 6 | $215.52 | |
| Supernus Pharmaceuticals, Inc. | 16 | $206.70 | |
| IDORSIA PHARMACEUTICALS US INC | 8 | $203.30 | |
| Tris Pharma Inc | 11 | $197.84 | |
| Lundbeck LLC | 12 | $132.27 | |
| HARMONY BIOSCIENCES LLC | 4 | $107.13 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
4,660
Patients
915
Total drug cost
$129,590
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Alprazolam | Generic | 622 | 100 | $5,849 |
| Clonazepam | Generic | 463 | 84 | $5,799 |
| Trazodone Hcl | Generic | 447 | 94 | $7,282 |
| Mirtazapine | Generic | 357 | 79 | $6,094 |
| Duloxetine Hcl | Generic | 345 | 65 | $13,155 |
| Fluoxetine Hcl | Generic | 334 | 67 | $5,256 |
| Quetiapine Fumarate | Generic | 267 | 49 | $7,890 |
| Lamotrigine | Generic | 264 | 54 | $3,539 |
| Bupropion Xl (Bupropion Hcl) | Brand | 257 | 46 | $6,445 |
| Aripiprazole | Generic | 250 | 64 | $37,414 |
Frequently asked questions
What is Dr. Gerald Lewis's medical specialty?
Dr. Gerald Lewis practices Psychiatric/Mental Health Clinical Nurse Specialist in Merrillville, IN.
Where does Dr. Gerald Lewis practice?
Dr. Gerald Lewis practices at 9120 Connecticut St Ste A, Merrillville, IN 464107015. Office phone: 2197931233.
What is Dr. Gerald Lewis's NPI?
Dr. Gerald Lewis's National Provider Identifier (NPI) is 1639279177, issued by NPPES.
Does Dr. Gerald Lewis accept Medicare assignment?
Yes. Dr. Gerald Lewis accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Gerald Lewis commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99214); Psychotherapy with evaluation and management visit (HCPCS 90833). Source: CMS Medicare Physician & Other Practitioners file.