Melissa O'Ryan Mekesa, M.D.
Emergency Medicine Physician · Marion, OH
Melissa O'Ryan Mekesa, M.D. is an emergency medicine physician with a practice address in Marion, Ohio, and NPI 1083908602, issued on May 31, 2011. Check the license (Ohio 35-121848, as entered in NPPES) on the State Medical Board of Ohio; the Medicare figures below come from public CMS files.
- Name
- Melissa O'Ryan Mekesa
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- 35-121848 OH
ME149190 FL
Self-reported in NPPES; status is on the state search - Practice location
- 1000 Mckinley Park Dr, Marion, OH 43302
- Phone
- (740) 383-8700
- Enumerated
- May 31, 2011
- Record last updated
- Mar 2, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (937) 619-4150
- Medicare enrollment
- Enrolled (PECOS I20210304000468); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 3,002 in Ohio → Look up another NPI →
Also registered at 1000 Mckinley Park Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Alicia Alvarado, CNPFamily Nurse Practitioner1487194536
- Goitom Asgedom, MDHospitalist Physician1548574296
Verify Melissa O'Ryan Mekesa in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersState Medical Board of Ohio
Search for license 35-121848Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
1% fewer Medicare Part D claims than the average emergency medicine physician in 2024
224 Medicare Part D claims for 125 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 24 claims were for opioids.
Most prescribed
- Methylprednisolone22 claims
- Cephalexin16 claims
- Hydrocodone-Acetaminophen16 claims
- Cyclobenzaprine Hcl12 claims
- Ondansetron Odt12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Santa Rosa HB Medical Services LLCMilton, FL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Melissa O'Ryan Mekesa among 3,002 emergency medicine physician records in Ohio
Melissa O'Ryan Mekesa, M.D. is one of 3,002 emergency medicine physician records with a practice address in Ohio. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 53% of them.
- NPI issued2011 · 53% of these records are older, 44% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2011 · median 2013 among the 1,720 with a school on file
- Record last updated2021 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Ohio practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in Ohio
There are 3,002 emergency medicine physician records in Ohio.
All 3,002 in Ohio → Every provider in Marion → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Paul Culler, MDMarion, OH 433021912946039
- Christopher Dupuy, D.O.Marion, OH 433021477780765
- Michael Jarosick, DOMarion, OH 433021477693364
- Amy Reed, D.O.Marion, OH 433021548435100
- Timothy Stephens, MDMarion, OH 433021265922983
- Matthew White, M.D.Marion, OH 433021457571606
- Sylvia Esser-Gleason, DOBellefontaine, OH 433111760424279
- John Fearon, DOBellefontaine, OH 433111003857418
Common questions
What is Melissa O'Ryan Mekesa, M.D.'s NPI number?
Melissa O'Ryan Mekesa, M.D.'s National Provider Identifier (NPI) is 1083908602, issued on May 31, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Melissa O'Ryan Mekesa, M.D. located?
The NPPES record lists a practice address at 1000 Mckinley Park Dr, Marion, OH, 43302. Phone: (740) 383-8700. Providers update this record themselves, so call before visiting.
How can I verify Melissa O'Ryan Mekesa, M.D.'s license?
NPPES lists Ohio license number 35-121848, as entered by the provider. Search the State Medical Board of Ohio at https://elicense.ohio.gov/oh_verifylicense. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Melissa O'Ryan Mekesa, M.D. prescribe under Medicare Part D?
In 2024, Melissa O'Ryan Mekesa, M.D. had 224 Medicare Part D claims for 125 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.