Doctor profile · Federal record
Dr. Mark Darnell, MD
Emergency Medicine Physician (CMS: Emergency Medicine) · Lancaster, OH
- NPI 1902891088
- Accepts Medicare
- 39 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
401 N Ewing St
Lancaster, OH 431303372
(740) 687-8000
fax (740) 687-8939 - Mailing address
-
Po Box 713464
Cincinnati, OH 452710001
Credentials & registration
- NPI registered
- September 2005 — 21 yrs on file
- Profile last updated
- June 3, 2011
- Year of graduation
- 1987 — 39 yrs since
- Specialty taxonomy
- 207P00000X — NUCC code
- State license (1)
- Ohio #35057532D
- Medicaid
- OH #0816237
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1902891088. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
223
Distinct HCPCS
4
Medicare allowed
$20,777
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
93010 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | 103 | 97 | $8 | |
99285 |
Emergency department visit with high level of medical decision making | 63 | 63 | $171 | |
99284 |
Emergency department visit with moderate level of medical decision making | 30 | 30 | $119 | |
99291 |
Critical care, first 30-74 minutes | 27 | 27 | $209 |
In context: peer comparison
Among 4 peers in Lancaster Emergency Medicine Physician, average services per provider: 82. This provider delivers 2.7× the peer median.Open Payments
Industry payments received
All-time total
$34
Transactions
2
Manufacturers
2
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Inari Medical, INC. | 1 | $18.99 | |
| Chiesi USA, INC. | 1 | $14.53 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
11
Patients
11
Total drug cost
$111
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Cephalexin | Generic | 11 | 11 | $111 |
Hospital affiliations
Frequently asked questions
What is Dr. Mark Darnell's medical specialty?
Dr. Mark Darnell practices Emergency Medicine Physician in Lancaster, OH.
Where does Dr. Mark Darnell practice?
Dr. Mark Darnell practices at 401 N Ewing St, Lancaster, OH 431303372. Office phone: 7406878000.
What is Dr. Mark Darnell's NPI?
Dr. Mark Darnell's National Provider Identifier (NPI) is 1902891088, issued by NPPES.
Does Dr. Mark Darnell accept Medicare assignment?
Yes. Dr. Mark Darnell accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mark Darnell commonly perform?
Top Medicare-reported procedures in 2023: Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (HCPCS 93010); Emergency department visit with high level of medical decision making (HCPCS 99285); Emergency department visit with moderate level of medical decision making (HCPCS 99284). Source: CMS Medicare Physician & Other Practitioners file.