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

Jonathan K. Marx, MD

Individual provider Vascular & Interventional Radiology Physician · NPI 1619991726

Jonathan K. Marx, MD practises Interventional Radiology in Fulton, Maryland. Graduated from Rutgers, Robert Woood Johnson Medical School in 1998, 28 years ago. Practices with Frederick Health Medical Group LLC, a 202-clinician group and accepts Medicare assignment. Licensed in Maryland.

Years since qualifying
28
Trained at
Rutgers, Robert Woood Johnson Medical School
Licensed in
MD
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

7788 Elmwood Rd
Fulton, MD 20759-2503
Phone: (973) 769-3444
Show map & directions

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

Specialties & licences

Vascular & Interventional Radiology Physician (primary) Taxonomy 2085R0204X · Licence D64735 (MD)

Record details

NPI number1619991726
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 26, 2006
Last updated in NPPESJanuary 26, 2023
Certification dateJanuary 26, 2023

Medicare enrollment

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

Medicare specialtyINTERVENTIONAL RADIOLOGY
Medical schoolRUTGERS, ROBERT WOOOD JOHNSON MEDICAL SCHOOL
Graduated 1998 (28 years in practice)
Group practice Frederick Health Medical Group Llc — 202 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 patients14
Services billed 15 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

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.

Colleagues at Frederick Health Medical Group LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 202 clinicians in the practice; 12 are shown here.

Other providers in Fulton