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

Mark S Gresla, MD

Individual provider Family Medicine Physician · NPI 1467482034

Mark S Gresla, MD is registered under Family Practice in Decatur, Indiana. Graduated from Indiana University School of Medicine in 1984, 42 years ago. Practices with Adams County Memorial Hospital, a 83-clinician group and accepts Medicare assignment. Licensed in Indiana.

Years since qualifying
42
Trained at
Indiana University School of Medicine
Licensed in
IN
In the registry since
2006
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

1100 Mercer Ave
Decatur, IN 46733-2303
Phone: (260) 724-2145
Fax: (260) 728-3853
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 01034460A (IN)

Record details

NPI number1467482034
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJuly 3, 2006
Last updated in NPPESOctober 15, 2025
Certification dateOctober 15, 2025

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolINDIANA UNIVERSITY SCHOOL OF MEDICINE
Graduated 1984 (42 years in practice)
Group practice Adams County Memorial Hospital — 83 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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 $214 2 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.

  • Adams Memorial Hospital Hospital · Decatur, IN
  • Adams Heritage Nursing home · Monroeville, IN · listed as Adams County Memorial Hospital
  • Adams Woodcrest Nursing home · Decatur, IN · listed as Adams County Memorial Hospital
  • Christian Care Retirement Community Nursing home · Bluffton, IN · listed as Adams County Memorial Hospital
  • Envive Of Berne Nursing home · Berne, IN · listed as Adams County Memorial Hospital
  • Bluffton Regional Medical Center Hospital · Bluffton, IN
  • Lutheran Hospital Of Indiana Hospital · Fort Wayne, IN

Colleagues at Adams County Memorial Hospital

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 83 clinicians in the practice; 12 are shown here.

Other providers in Decatur