Doctor profile · Federal record
Dr. Mark St. Cyr, MD
Emergency Medical Services (Emergency Medicine) Physician (CMS: Internal Medicine) · Lafayette, LA
- NPI 1184678997
- 40 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
2100 Jefferson St
Lafayette, LA 705018556
(337) 261-0734
Credentials & registration
- NPI registered
- May 2006 — 20 yrs on file
- Profile last updated
- April 15, 2008
- Year of graduation
- 1986 — 40 yrs since
- Specialty taxonomy
- 207PE0004X — NUCC code
- State license (1)
- Louisiana #018991
- Medicaid
- LA #1365963
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1184678997. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
192
Distinct HCPCS
6
Medicare allowed
$20,489
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99284 |
Emergency department visit with moderate level of medical decision making | 62 | 58 | $119 | |
99285 |
Emergency department visit with high level of medical decision making | 43 | 43 | $173 | |
99282 |
Emergency department visit with straightforward medical decision making | 31 | 30 | $41 | |
99283 |
Emergency department visit with low level of medical decision making | 29 | 28 | $70 | |
93010 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | 16 | 16 | $8 | |
99291 |
Critical care, first 30-74 minutes | 11 | 11 | $207 |
In context: peer comparison
Among 2 peers in this city , average services per provider: 39. This provider delivers 4.9× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
692
Patients
116
Total drug cost
$62,595
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Buprenorphine Hcl | Generic | 124 | 11 | $12,229 |
| Buprenorphine-Naloxone (Buprenorphine Hcl/Naloxone Hcl) | Brand | 92 | 0 | $27,637 |
| Alprazolam | Generic | 90 | 0 | $488 |
| Clonazepam | Generic | 70 | 0 | $596 |
| Diazepam | Generic | 64 | 0 | $559 |
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 62 | 45 | $1,043 |
| Oxycodone Hcl | Generic | 32 | 0 | $372 |
| Belbuca (Buprenorphine Hcl) | Brand | 29 | 0 | $16,125 |
| Sulfamethoxazole-Trimethoprim (Sulfamethoxazole/Trimethoprim) | Brand | 24 | 24 | $104 |
| Cyclobenzaprine Hcl | Generic | 20 | 0 | $106 |
Hospital affiliations
Frequently asked questions
What is Dr. Mark St. Cyr's medical specialty?
Dr. Mark St. Cyr practices Emergency Medical Services (Emergency Medicine) Physician in Lafayette, LA.
Where does Dr. Mark St. Cyr practice?
Dr. Mark St. Cyr practices at 2100 Jefferson St, Lafayette, LA 705018556. Office phone: 3372610734.
What is Dr. Mark St. Cyr's NPI?
Dr. Mark St. Cyr's National Provider Identifier (NPI) is 1184678997, issued by NPPES.
Does Dr. Mark St. Cyr accept Medicare assignment?
Dr. Mark St. Cyr does not accept Medicare assignment for all services. Patients may be billed amounts beyond Medicare-allowed charges.
What procedures does Dr. Mark St. Cyr commonly perform?
Top Medicare-reported procedures in 2023: Emergency department visit with moderate level of medical decision making (HCPCS 99284); Emergency department visit with high level of medical decision making (HCPCS 99285); Emergency department visit with straightforward medical decision making (HCPCS 99282). Source: CMS Medicare Physician & Other Practitioners file.