Psychiatry and Neurology, Neurology · O Fallon, MO
NPI
1255539789
Since 2007
Specialty
Psychiatry and Neurology, Neurology
Code 2084N0400X
Group practices
2
Medicare group memberships
Hospitals
4
Hospital affiliations
20 Progress Point Pkwy Ste 200
O Fallon, MO, 63368
Phone (636) 916-7060
Groups this clinician bills Medicare through
Medicare paid, 2024
$7,883
143 services
Medicare patients, 2024
68
Average age 63
Drug cost, 2024
$1.7M
1,254 prescriptions
Company payments, 2025
$6,609
From 5 companies
Procedures and visits billed to Original Medicare, 2024
In 2024, the most common Medicare service billed by Salim Chahin was code G2211 (visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's), 54 times for 50 patients. In total Salim Chahin billed 143 services in 11 codes, and Medicare paid $7,883.
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2026-04-02.
| Code | Setting | Services | Patients | Paid per service | Medicare paid |
|---|---|---|---|---|---|
| G2211 Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's | Office | 54 | 50 | $11.45 | $618 |
| 99214 Office E&M - Established | Office | 34 | 32 | $72.49 | $2,465 |
| 99215 Office E&M - Established | Office | 23 | 22 | $117.30 | $2,698 |
By year: 2022 $11K for 119 services; 2023 $12K for 144 services; 2024 $7,883 for 143 services.
Medicare prescription drug claims, 2024
In 2024, the drug Salim Chahin prescribed most often to Medicare patients was Baclofen, with 214 prescriptions and refills. In total Salim Chahin wrote 1,254 Medicare prescriptions that cost $1.7M.
| Drug | Claims | 30-day fills | Patients | Cost |
|---|---|---|---|---|
| Baclofen Generic | 214 | 385 | 46 | $5,255 |
| Gabapentin Generic | 128 | 210 | 25 | $2,785 |
| Fingolimod Fingolimod Hcl | 71 | 71 | Under 11 | $193K |
| Dimethyl Fumarate Generic | 58 | 59 | Under 11 | $119K |
| Amitriptyline Hcl Generic | 52 | 80 | Under 11 | $1,115 |
| Modafinil Generic | 50 | 56 | 11 | $2,359 |
| Topiramate Generic | 41 | 53 | Under 11 | $729 |
| Dalfampridine Er Dalfampridine | 40 | 56 | Under 11 | $8,589 |
| Copaxone Glatiramer Acetate | 39 | 39 | Under 11 | $256K |
| Duloxetine Hcl Generic | 29 | 47 | Under 11 | $553 |
| Carbamazepine Generic | 28 | 40 | Under 11 | $1,133 |
| Tizanidine Hcl Generic | 28 | 52 | Under 11 | $521 |
| Amantadine Amantadine Hcl | 27 | 48 | Under 11 | $958 |
| Glatopa Glatiramer Acetate | 26 | 34 | Under 11 | $94K |
| Mayzent Siponimod | 25 | 25 | Under 11 | $255K |
Brand drugs: - claims; generic drugs: 1,097 claims.
Money and other things of value reported by the companies
In 2025, drug and medical device companies paid Salim Chahin $6,609 ($6,609 in general payments such as food, travel and fees) from 5 companies. The largest payer was Amgen Inc. with $5,826.
Official US government data on Original Medicare services, Medicare prescription drug plans and the payments drug and device companies must report. Services with fewer than 11 patients and drugs with fewer than 11 claims are not published. Procedure codes are shown by number with their public category.