Marc Thomas Johannsen, D.O.
Diagnostic Radiology Physician · Portsmouth, VA
Marc Thomas Johannsen, D.O. is a diagnostic radiology physician with a practice address in Portsmouth, Virginia, and NPI 1538329644, issued on Jun 11, 2008. Check the license on the Virginia Department of Health Professions; the Medicare figures below come from public CMS files.
- Name
- Marc Thomas Johannsen
- Credential
- D.O.
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License number
- OS15809 FL
Self-reported in NPPES; status is on the state search - Practice location
- 620 John Paul Jones Cir, Portsmouth, VA 23708
- Phone
- (757) 953-5000
- Enumerated
- Jun 11, 2008
- Record last updated
- Mar 28, 2023
- Medicaid ID
- 113776200 FL
- Medicare enrollment
- Enrolled (PECOS I20190116001698); accepts Medicare assignment
- Medical or professional school
- Philadelphia College Of Osteopathic Medicine, 2008
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 1,158 in Virginia → Look up another NPI →
Also registered at 620 John Paul Jones Cir
A shared address usually means a shared clinic or building; it does not show who employs whom.
- John Aalto, DPMFoot & Ankle Surgery Podiatrist1518196054
- Joy Aaron, RNRegistered Nurse1083765911
- Mark Abadilla, CRNACertified Registered Nurse Anesthetist1447135793
- Jason Abbot, PHARMDPharmacotherapy Pharmacist1215907324
- Renee AbernathyStudent in an Organized Health Care Education/Training Program1124969670
- Vivek Abraham, MDStudent in an Organized Health Care Education/Training Program1942829494
Verify Marc Thomas Johannsen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersVirginia Department of Health ProfessionsCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through 6 group practices
- East Central Florida Outpatient Imaging LLCFleming Island, FL
- Inverness Medical Imaging LLCFleming Island, FL
- Ocala Health Imaging Services LLCOcala, FL
- Ohri LLCAltamonte Springs, FL
- Orlando Health Medical Group IncOrlando, FL
- Radiology Imaging Associates LLCSt Augustine, FL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marc Thomas Johannsen among 1,158 diagnostic radiology physician records in Virginia
Marc Thomas Johannsen, D.O. is one of 1,158 diagnostic radiology physician records with a practice address in Virginia. 72% 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 63% of them.
- NPI issued2008 · 63% of these records are older, 32% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2008 · median 2004 among the 786 with a school on file
- Record last updated2023 · 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 2085R0202X and a Virginia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
34 diagnostic radiology physician records list a practice address in Portsmouth
They are 34 of the 2,857 NPPES records with a practice address in Portsmouth, and 1,158 diagnostic radiology physician records in Virginia.
All 1,158 in Virginia → Every provider in Portsmouth → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Lynn Bergren, D.O.Portsmouth, VA 237081669446134
- David Besachio, D.O.Portsmouth, VA 237081508837600
- David Delonga, M.D., PHD.Portsmouth, VA 237081811977309
- Benjamin Drinkwine, M.D.Portsmouth, VA 237081336114214
- Van Thong Ho, M.D.Portsmouth, VA 237081457314965
- Brian Krause, M.D.Portsmouth, VA 237081487858270
- Lawrence Leclair, M.D.Portsmouth, VA 237081790765501
- Tina Liebig, MDPortsmouth, VA 237081427019850
Common questions
What is Marc Thomas Johannsen, D.O.'s NPI number?
Marc Thomas Johannsen, D.O.'s National Provider Identifier (NPI) is 1538329644, issued on Jun 11, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Marc Thomas Johannsen, D.O. located?
The NPPES record lists a practice address at 620 John Paul Jones Cir, Portsmouth, VA, 23708. Phone: (757) 953-5000. Providers update this record themselves, so call before visiting.
How can I verify Marc Thomas Johannsen, D.O.'s license?
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.
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.