Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. Mark Darnell, MD

Individual provider Emergency Medicine Physician · NPI 1902891088

Dr. Mark Darnell, MD practises Emergency Medicine in Lancaster, Ohio. Graduated from West Virginia University School of Medicine in 1987, 39 years ago. Practices with Emergency Medicine Physicians of Lancaster Ltd, a 7-clinician group and accepts Medicare assignment. Licensed in Ohio.

Years since qualifying
39
Trained at
West Virginia University School of Medicine
Licensed in
OH
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

401 N Ewing St
Lancaster, OH 43130-3372 Not confirmed with CMS for 15 years — call before visiting
Phone: (740) 687-8000
Fax: (740) 687-8939
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 35057532D (OH)

Record details

NPI number1902891088
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 15, 2005
Last updated in NPPESJune 3, 2011

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyEMERGENCY MEDICINE
Medical schoolWEST VIRGINIA UNIVERSITY SCHOOL OF MEDICINE
Graduated 1987 (39 years in practice)
Group practice Emergency Medicine Physicians Of Lancaster Ltd — 7 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients128
Services billed 189 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Emergency Medicine Physicians of Lancaster Ltd

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 7 clinicians in the practice; 5 are shown here.

Other providers in Lancaster