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

John E Marx, MD

Individual provider Family Medicine Physician · NPI 1720491731

John E Marx, MD is registered under Family Practice in Fort Wayne, Indiana. Graduated from Indiana University School of Medicine in 2010, 16 years ago. Practices with Parkview Health System Inc, a 1,336-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Indiana.

Years since qualifying
16
Trained at
Indiana University School of Medicine
Licensed in
IN
In the registry since
2014
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1007 W Rudisill Blvd
Fort Wayne, IN 46807-2170
Phone: (260) 425-5180
Fax: (260) 425-5210
Show map & directions

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

Additional practice locations (1)

  • 1818 Carew St Ste 120, Fort Wayne, IN 46805-4764 — (260) 425-6200

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 01076053A (IN)

Record details

NPI number1720491731
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 6, 2014
Last updated in NPPESOctober 10, 2022
Certification dateOctober 10, 2022

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Also practisesHOSPITALIST
Medical schoolINDIANA UNIVERSITY SCHOOL OF MEDICINE
Graduated 2010 (16 years in practice)
Group practice Parkview Health System Inc — 1336 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Removal of skin lesions 1–10 times
Removal or shaving of skin growth 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

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 patients117
Services billed 551 a service is one billed item, such as a visit, a test or a procedure
Average patient age66

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.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $534 30 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • Parkview Huntington Hospital Hospital · Huntington, IN · listed as Huntington Memorial Hospital, Inc
  • Parkview Regional Medical Center Hospital · Fort Wayne, IN

Colleagues at Parkview Health System Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1336 clinicians in the practice; 12 are shown here.

Other providers in Fort Wayne