Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Melissa O'Ryan Mekesa, MD

Individual provider Emergency Medicine Physician · NPI 1083908602

Dr. Melissa O'Ryan Mekesa, MD practises Emergency Medicine in Marion, Ohio. Qualified in 2011, 15 years ago. Practices with Flowers Hb Medical Services LLC, a 139-clinician group and accepts Medicare assignment. Licensed in Florida and Ohio.

Years since qualifying
15
Licensed in
FL, OH
In the registry since
2011
Specialties on file
2
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

1000 McKinley Park Dr
Marion, OH 43302-6399
Phone: (740) 383-8700
Fax: (937) 619-4150
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence ME149190 (FL)
Emergency Medicine Physician Taxonomy 207P00000X · Licence 35-121848 (OH)

Record details

NPI number1083908602
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorYes
NPI enumeratedMay 31, 2011
Last updated in NPPESMarch 2, 2021
Certification dateMarch 2, 2021

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolOTHER
Graduated 2011 (15 years in practice)
Group practice Flowers Hb Medical Services Llc — 139 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 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 patients171
Services billed 229 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

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.

Colleagues at Flowers Hb Medical Services LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 139 clinicians in the practice; 12 are shown here.

Other providers in Marion