Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Marc Thomas Johannsen, DO

Individual provider Diagnostic Radiology Physician · NPI 1538329644

Marc Thomas Johannsen, DO is a Diagnostic Radiology in Portsmouth, Virginia. Graduated from Philadelphia College of Osteopathic Medicine in 2008, 18 years ago. Practices with Radiology Imaging Associates LLC, a 181-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Florida.

Years since qualifying
18
Trained at
Philadelphia College of Osteopathic Medicine
Licensed in
FL
In the registry since
2008
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

620 John Paul Jones Cir
Portsmouth, VA 23708-2111
Phone: (757) 953-5000
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 52 W Underwood St, Orlando, FL 32806-1110 — (321) 842-8475

Specialties & licences

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X · Licence OS15809 (FL)

Record details

NPI number1538329644
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorYes
NPI enumeratedJune 11, 2008
Last updated in NPPESMarch 28, 2023
Certification dateMarch 28, 2023
Mailing address1520 Vineland Cir, Unit B, Fleming Island, FL 32003-3298

Medicare enrollment

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

Medicare specialtyDIAGNOSTIC RADIOLOGY
Medical schoolPHILADELPHIA COLLEGE OF OSTEOPATHIC MEDICINE
Graduated 2008 (18 years in practice)
Group practice Radiology Imaging Associates Llc — 181 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations9 on file with Medicare

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