MARK AINSLEY INNIS MD
NPI 1740450220
Emergency Medicine in Portsmouth, VA
About Mark Ainsley Innis Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARK AINSLEY INNIS MD (NPI 1740450220) is an individual emergency medicine provider in Portsmouth, Virginia, licensed in Virginia (0101243430) and active in the NPI registry since March 2008. He is enrolled in Medicare PECOS, is affiliated with Brookdale Hospital Medical Center, and maintains a secondary practice location in Sullivan.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Mark Ainsley Innis Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
15Medicare enrollment records show Mark Innis reassigns Medicare billing to 15 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Chesapeake, VA 23320
- Reassigned Medicare billing, Virginia enrollment
- 56 clinicians in this Medicare group
Franklin, VA 23851
- Reassigned Medicare billing, Virginia enrollment
- 219 clinicians in this Medicare group
Culpeper, VA 22701
- Reassigned Medicare billing, Virginia enrollment
- 1,294 clinicians in this Medicare group
Burlington, NC 27215
- Reassigned Medicare billing, Virginia enrollment
- 3 clinicians in this Medicare group
Salem, VA 24153
- Reassigned Medicare billing, Virginia enrollment
- 130 clinicians in this Medicare group
Myrtle Beach, SC 29572
- Reassigned Medicare billing, South Carolina enrollment
- 559 clinicians in this Medicare group
Beckley, WV 25801
- Reassigned Medicare billing, West Virginia enrollment
- 183 clinicians in this Medicare group
Charlotte, NC 28210
- Reassigned Medicare billing, North Carolina enrollment
- 230 clinicians in this Medicare group
Brooklyn, NY 11212
- Reassigned Medicare billing, New York enrollment
- 782 clinicians in this Medicare group
Brooklyn, NY 11213
- Reassigned Medicare billing, New York enrollment
- Medicare enrollment name: Interfaith Emergency Medicine PC
- 145 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 4
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Brookdale Hospital Medical Center
Acute Care Hospitals · Brooklyn, NYBon Secours Maryview Medical Center
Acute Care Hospitals · Portsmouth, VASovah Health Danville
Acute Care Hospitals · Danville, VAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 23707 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
PORTSMOUTH, VA 23707
PORTSMOUTH, VA 23707
PORTSMOUTH, VA 23707
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Mark Innis's NPI number?
The NPI number for Mark Innis is 1740450220. It was assigned to this individual provider in the NPPES registry on March 11, 2008.
Where is Mark Innis located?
Mark Innis practices at 3636 High St, Portsmouth, VA 23707. The listed phone number is (757) 398-2200.
What is Mark Innis's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Mark Innis enrolled in Medicare?
Yes. Mark Innis is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Mark Innis's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Innis reassigns Medicare benefits to 15 organizations: Tidewater Emergency Medical Care, Ltd. (Chesapeake, VA), Alexandria Springfield Emergency Physicians PC (Franklin, VA), Emergency Medicine Associates P.A., P.C. (Culpeper, VA), Ainsley Medical LLC (Burlington, NC), Lake Spring Emergency Group, LLC (Salem, VA) and 10 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Mark Innis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mark Innis accept?
Health plans from Oscar Health and Oscar Insurance Company list Mark Innis as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Mark Innis affiliated with any hospitals?
According to CMS data, Mark Innis is affiliated with Brookdale Hospital Medical Center, Bon Secours Maryview Medical Center and Sovah Health Danville.
When was this NPI record last updated?
The NPPES record for Mark Innis was last updated on April 3, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Mark Ainsley Innis, MD · NPI 1740450220
Emergency Medicine physician in Portsmouth, Virginia. Individual provider, active in the CMS NPPES registry since March 11, 2008.
## Identity
- **NPI:** 1740450220 (Entity type: Individual)
- **Enumerated:** March 11, 2008
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 0101243430 (Virginia)
- **Sole proprietor:** No
## Practice location
- **Address:** 3636 HIGH ST, Portsmouth, VA 23707-3236
- **Phone:** (757) 398-2200 · **Fax:** (757) 398-2359
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 15 organizations under Medicare reassignment (form CMS-855R): Tidewater Emergency Medical Care, Ltd. (NPI 1710991153, Chesapeake, VA); Alexandria Springfield Emergency Physicians PC (NPI 1740529700, Franklin, VA); Emergency Medicine Associates P.A., P.C. (NPI 1881559102, Culpeper, VA); Ainsley Medical LLC (NPI 1265124689, Burlington, NC); Lake Spring Emergency Group, LLC (NPI 1215429600, Salem, VA); and 10 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Ohio State University College Of Medicine, class of 2004
## Record status
- **NPPES last updated:** April 3, 2026
- **Other identifiers:** Medicaid 1740450220 (VA)
---
Source: [NPI Profile](https://npiprofile.com/npi/1740450220) · Data from the CMS NPPES public registry.