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

Mark Ainsley Innis, MD

Individual provider Emergency Medicine Physician · NPI 1740450220

Mark Ainsley Innis, MD practises Emergency Medicine in Portsmouth, Virginia. Graduated from Ohio State University College of Medicine in 2004, 22 years ago. Practices with Ainsley Medical LLC, a 2-clinician group and works from 2 locations. Licensed in Indiana, New York and Virginia.

Years since qualifying
22
Trained at
Ohio State University College of Medicine
Licensed in
IN, NY, VA
In the registry since
2008
Specialties on file
3
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

3636 High St
Portsmouth, VA 23707-3236
Phone: (757) 398-2200
Fax: (757) 398-2359
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 2200 N Section St, Sullivan, IN 47882-7523 — (812) 268-4311

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 0101243430 (VA)
Emergency Medicine Physician Taxonomy 207P00000X · Licence 248590 (NY)
Emergency Medicine Physician Taxonomy 207P00000X · Licence 01078891A (IN)

Record details

NPI number1740450220
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 11, 2008
Last updated in NPPESApril 3, 2026
Certification dateApril 3, 2026

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 2004 (22 years in practice)
Group practice Ainsley Medical Llc — 2 clinicians
Accepts Medicare assignment Not indicated
Practice locations2 on file with Medicare

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 patients418
Services billed 468 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

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. Those with a page here are linked.

Colleagues at Ainsley Medical LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice.

Other providers in Portsmouth