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

Mark T Mueller, MD

Individual provider Family Medicine Physician · NPI 1063464923

Mark T Mueller, MD is registered under Family Practice in Lima, Ohio. Graduated from Medical College of Ohio in 1998, 28 years ago. Practices with Mercy Health Physicians Lima, LLC, a 54-clinician group and accepts Medicare assignment. Licensed in Ohio.

Years since qualifying
28
Trained at
Medical College of Ohio
Licensed in
OH
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

2745 Fort Amanda Rd
Lima, OH 45805-4805
Phone: (419) 996-5700
Fax: (419) 996-5639
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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 35076924 (OH)

Record details

NPI number1063464923
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 17, 2006
Last updated in NPPESApril 6, 2021
Certification dateApril 6, 2021

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolMEDICAL COLLEGE OF OHIO
Graduated 1998 (28 years in practice)
Group practice Mercy Health Physicians Lima, Llc — 54 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

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 patients410
Services billed 7,368 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

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 $216 12 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.

  • Mercy Health St Ritas Medical Center Hospital · Lima, OH · listed as Mercy Health-St Ritas Medical Center LLC
  • Community Health Professionals, Inc Home health agency · Van Wert, OH · listed as Community Health Professionals Inc
  • Grand Lake Health System Hospital · Saint Marys, OH
  • Lima Memorial Health System Hospital · Lima, OH
  • Lima Memorial Hospital Home Health Care Home health agency · Lima, OH
  • Mercy Health-Home Health, Lima Home health agency · Lima, OH

Colleagues at Mercy Health Physicians Lima, LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 54 clinicians in the practice; 12 are shown here.

Other providers in Lima