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

Individual provider Family Medicine Physician · NPI 1588669642

David L. Duff, MD practises Emergency Medicine in London, Ohio. Graduated from Ohio State University College of Medicine in 1997, 29 years ago. Practices with Ohio Emergency Professionals Inc, a 6-clinician group and accepts Medicare assignment. Licensed in Ohio.

Years since qualifying
29
Trained at
Ohio State University College 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

210 N Main St
London, OH 43140-1115 Not confirmed with CMS for 13 years — call before visiting
Phone: (740) 845-7333
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 35078018 (OH)

Record details

NPI number1588669642
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 16, 2005
Last updated in NPPESJune 24, 2013

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolOHIO STATE UNIVERSITY COLLEGE OF MEDICINE
Graduated 1997 (29 years in practice)
Group practice Ohio Emergency Professionals Inc — 6 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 patients182
Services billed 220 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.

  • Madison Health Hospital · London, OH

Colleagues at Ohio Emergency Professionals Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 6 clinicians in the practice; 3 are shown here.

Other providers in London