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

Robert Koller, DO

Individual provider Hospitalist Physician · NPI 1043659550

Robert Koller, DO is registered under Family Practice in Boardman, Ohio. Qualified in 2013, 13 years ago. Practices with Mercy Health Physicians Youngstown Specialty Care LLC, a 467-clinician group and accepts Medicare assignment. Licensed in Ohio.

Years since qualifying
13
Licensed in
OH
In the registry since
2013
Specialties on file
2
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

8401 Market St
Boardman, OH 44512-6725
Phone: (330) 729-4298
Fax: (330) 729-1591
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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 34.014342 (OH)
Hospitalist Physician Taxonomy 208M00000X · Licence 34.014342 (OH)

Record details

NPI number1043659550
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedJune 18, 2013
Last updated in NPPESDecember 20, 2024
Certification dateDecember 20, 2024

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolOTHER
Graduated 2013 (13 years in practice)
Group practice Mercy Health Physicians Youngstown Specialty Care Llc — 467 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 patients217
Services billed 227 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.

  • Hmhp St Elizabeth Boardman Health Center Hospital · Boardman, OH
  • Mh St Elizabeth Youngstown Hospital Hospital · Youngstown, OH
  • Mh St Joseph Warren Hospital Hospital · Warren, OH

Colleagues at Mercy Health Physicians Youngstown Specialty Care LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 467 clinicians in the practice; 12 are shown here.

Other providers in Boardman