Mark Ainsley Innis, MD
Emergency Medicine Physician · Portsmouth, VA
Mark Ainsley Innis, MD is an emergency medicine physician with a practice address in Portsmouth, Virginia, and NPI 1740450220, issued on Mar 11, 2008. Check the license (Virginia 0101243430, as entered in NPPES) on the Virginia Department of Health Professions; the Medicare figures below come from public CMS files.
- Name
- Mark Ainsley Innis
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- 0101243430 VA
01078891A IN
248590 NY
Self-reported in NPPES; status is on the state search - Practice location
- 3636 High St, Portsmouth, VA 23707
- Phone
- (757) 398-2200
- Enumerated
- Mar 11, 2008
- Record last updated
- Apr 3, 2026
- Fax
- (757) 398-2359
- Medicaid ID
- 1740450220 VA
- Medicare enrollment
- Enrolled (PECOS I20080725000496); may accept Medicare assignment
- Medical or professional school
- Ohio State University College Of Medicine, 2004
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,715 in Virginia → Look up another NPI →
Also registered at 3636 High St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Brian Ahearn, MDEmergency Medicine Physician1386140879
- Reem Alhawas, MDEmergency Medicine Physician1144668344
- Chaitanya Allikayala, M. D.Hospitalist Physician1932528932
- Odelkys AlvarezCertified Registered Nurse Anesthetist1033651633
- Angelo Ambridge, CRNACertified Registered Nurse Anesthetist1518582188
- Olumide Ayeni, MDFamily Medicine Physician1881335479
Verify Mark Ainsley Innis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersVirginia Department of Health Professions
Search for license 0101243430Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Most of these Medicare Part D claims are vaccines, 88% of the cost of the top drugs
716 Medicare Part D claims for 519 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 52% of claims. 51 claims were for opioids.
Most prescribed
Pharmacies often give vaccines under a standing order that names one clinician, and CMS counts every such claim under that clinician's NPI. These claims are therefore not a measure of this clinician's own prescribing.
- Arexvy285 claims
- Oxycodone-Acetaminophen33 claims
- Cephalexin27 claims
- Prednisone25 claims
- Meclizine Hcl16 claims
- Azithromycin15 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $36.03
2 payments; by number, the most common kind was food and beverage; the largest payer was ViiV Healthcare Company. The 12,335 providers of this specialty with any payment received $953.79 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Ainsley Medical LLCDanville, VA
- Interfaith Emergency Medicine PCBrooklyn, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Ainsley Innis among 1,715 emergency medicine physician records in Virginia
Mark Ainsley Innis, MD is one of 1,715 emergency medicine physician records with a practice address in Virginia. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 49% of them.
- NPI issued2008 · 49% of these records are older, 46% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 56% of these records are
- Graduated2004 · median 2011 among the 956 with a school on file
- Record last updated2026 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Virginia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
78 emergency medicine physician records list a practice address in Portsmouth
They are 78 of the 2,857 NPPES records with a practice address in Portsmouth, and 1,715 emergency medicine physician records in Virginia.
All 1,715 in Virginia → Every provider in Portsmouth → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Brian Ahearn, MDPortsmouth, VA 237071386140879
- Reem Alhawas, MDPortsmouth, VA 237071144668344
- Reva Eichin, MDPortsmouth, VA 237071124758982
- Audrey Grant, M.D.Portsmouth, VA 237071194765826
- Johnathan Kinzer, MDPortsmouth, VA 237071063909059
- Daniel Salomonsky, DOPortsmouth, VA 237071144490624
- Keneth Sarpong, MDPortsmouth, VA 237071114554235
- Christopher Taylor, MDPortsmouth, VA 237071790273365
Common questions
What is Mark Ainsley Innis, MD's NPI number?
Mark Ainsley Innis, MD's National Provider Identifier (NPI) is 1740450220, issued on Mar 11, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Mark Ainsley Innis, MD located?
The NPPES record lists a practice address at 3636 High St, Portsmouth, VA, 23707. Phone: (757) 398-2200. Providers update this record themselves, so call before visiting.
How can I verify Mark Ainsley Innis, MD's license?
NPPES lists Virginia license number 0101243430, as entered by the provider. Search the Virginia Department of Health Professions at https://dhp.virginiainteractive.org/lookup/index. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mark Ainsley Innis, MD prescribe under Medicare Part D?
In 2024, Mark Ainsley Innis, MD had 716 Medicare Part D claims for 519 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.