Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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John-Phillip Thomas Markovic, MD

Individual provider Internal Medicine Physician · NPI 1770903189

John-Phillip Thomas Markovic, MD is registered under Cardiovascular Disease (Cardiology) in Niles, Michigan. Graduated from Loma Linda University School of Medicine in 2014, 12 years ago. Practices with Lakeland Hospitals at Niles and St Joseph Inc, a 135-clinician group, works from 5 locations and accepts Medicare assignment. Licensed in Michigan and Ohio.

Years since qualifying
12
Trained at
Loma Linda University School of Medicine
Licensed in
MI, OH
In the registry since
2014
Specialties on file
3
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

31 N Saint Joseph Ave
Niles, MI 49120-2207
Phone: (269) 684-6777
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (4)

  • 3535 Southern Blvd, Kettering, OH 45429-1221 — (937) 384-6800
  • 3535 Southern Blvd, Kettering, OH 45429-1221 — (937) 384-6800
  • 1 Medical Center Dr, Middletown, OH 45005 — (513) 705-4754
  • 3130 N County Road 25a, Troy, OH 45373-1337 — (937) 440-4466

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 4301506700 (MI)
Internal Medicine Physician Taxonomy 207R00000X · Licence 35131303 (OH)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1770903189
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedApril 24, 2014
Last updated in NPPESAugust 14, 2023
Certification dateAugust 12, 2023

Medicare enrollment

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

Medicare specialtyCARDIOVASCULAR DISEASE (CARDIOLOGY)
Medical schoolLOMA LINDA UNIVERSITY SCHOOL OF MEDICINE
Graduated 2014 (12 years in practice)
Group practice Lakeland Hospitals At Niles And St Joseph Inc — 135 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 patients999
Services billed 2,930 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

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 $395 17 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.

  • Lakeland Hospital, St Joseph Hospital · St Joseph, MI · listed as Lakeland Hospital at Niles and St Joseph, Inc
  • Corewell Health Watervliet Hospital Hospital · Watervliet, MI

Colleagues at Lakeland Hospitals at Niles and St Joseph Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 135 clinicians in the practice; 12 are shown here.

Other providers in Niles