Doctor profile · Federal record
Dr. Marc Klementowski, M.D.
Emergency Medicine Physician · Williamsville, NY
- NPI 1134196728
- 20 yrs on file
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
6653 Main St
Williamsville, NY 142215906
(716) 204-4500
fax (716) 204-4501
Credentials & registration
- NPI registered
- March 2006 — 20 yrs on file
- Profile last updated
- November 20, 2007
- Specialty taxonomy
- 207P00000X — NUCC code
- State license (1)
- New York #188748
- Medicaid
- NY #01795308
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1134196728. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
235
Distinct HCPCS
4
Medicare allowed
$31,565
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99285 |
Emergency department visit with high level of medical decision making | 128 | 116 | $169 | |
99284 |
Emergency department visit with moderate level of medical decision making | 64 | 61 | $116 | |
93010 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | 32 | 30 | $8 | |
99291 |
Critical care, first 30-74 minutes | 11 | 11 | $205 |
In context: peer comparison
Among 4 peers in Williamsville Emergency Medicine Physician, average services per provider: 70. This provider delivers 3.4× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
235
Patients
229
Total drug cost
$1,302
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Prednisone | Generic | 57 | 56 | $157 |
| Ondansetron Odt (Ondansetron) | Brand | 43 | 43 | $194 |
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 37 | 35 | $180 |
| Ibuprofen | Generic | 23 | 23 | $142 |
| Cefdinir | Generic | 20 | 20 | $306 |
| Sulfamethoxazole-Trimethoprim (Sulfamethoxazole/Trimethoprim) | Brand | 15 | 15 | $78 |
| Azithromycin | Generic | 14 | 14 | $53 |
| Pantoprazole Sodium | Generic | 14 | 11 | $139 |
| Cephalexin | Generic | 12 | 12 | $53 |
Frequently asked questions
What is Dr. Marc Klementowski's medical specialty?
Dr. Marc Klementowski practices Emergency Medicine Physician in Williamsville, NY.
Where does Dr. Marc Klementowski practice?
Dr. Marc Klementowski practices at 6653 Main St, Williamsville, NY 142215906. Office phone: 7162044500.
What is Dr. Marc Klementowski's NPI?
Dr. Marc Klementowski's National Provider Identifier (NPI) is 1134196728, issued by NPPES.
What procedures does Dr. Marc Klementowski commonly perform?
Top Medicare-reported procedures in 2023: Emergency department visit with high level of medical decision making (HCPCS 99285); Emergency department visit with moderate level of medical decision making (HCPCS 99284); Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (HCPCS 93010). Source: CMS Medicare Physician & Other Practitioners file.