John O. Ranker, MD
Internal Medicine Physician · Perrysburg, OH
John O. Ranker, MD is an internal medicine physician with a practice address in Perrysburg, Ohio, and NPI 1508069444, issued on Jun 7, 2007. Check the license (Ohio 57009242, as entered in NPPES) on the State Medical Board of Ohio; the Medicare figures below come from public CMS files.
- Name
- John O. Ranker
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 57009242 OH
Self-reported in NPPES; status is on the state search - Practice location
- 1103 Village Square Dr, Perrysburg, OH 43551
- Phone
- (419) 874-3246
- Enumerated
- Jun 7, 2007
- Record last updated
- Jul 13, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (419) 874-8475
- Medicare enrollment
- Enrolled (PECOS I20090708000351); accepts Medicare assignment
- Medical or professional school
- University Of Cincinnati College Of Medicine, 2003
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 5,277 in Ohio → Look up another NPI →
Also registered at 1103 Village Square Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Douglas Cifuentes, D.O.Internal Medicine Physician1689677544
- Mark Cooper, DOFamily Medicine Physician1801896014
- Kelly FinneyFamily Nurse Practitioner1821276841
- Stephanie Gerdeman, NPFamily Nurse Practitioner1093197261
- Diane Kielmeyer, NPFamily Nurse Practitioner1588040505
Verify John O. Ranker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersState Medical Board of Ohio
Search for license 57009242Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
35% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,077 Medicare Part D claims for 310 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Amlodipine Besylate218 claims
- Losartan Potassium169 claims
- Furosemide162 claims
- Allopurinol155 claims
- Potassium Chloride136 claims
- Lisinopril103 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.
Industry payments in 2024: $23.06
1 payment: food and beverage; the largest payer was Otsuka America Pharmaceutical, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Toledo Clinic IncorporatedFindlay, OH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John O. Ranker among 5,277 internal medicine physician records in Ohio
John O. Ranker, MD is one of 5,277 internal medicine physician records with a practice address in Ohio. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 45% of them.
- NPI issued2007 · 45% of these records are older, 48% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated2003 · median 2006 among the 3,414 with a school on file
- Record last updated2012 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Ohio practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
21 internal medicine physician records list a practice address in Perrysburg
They are 21 of the 952 NPPES records with a practice address in Perrysburg, and 5,277 internal medicine physician records in Ohio.
All 5,277 in Ohio → Every provider in Perrysburg → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Sunita Banerjee, MDPerrysburg, OH 435511710993787
- Cathy Cantor, MDPerrysburg, OH 435511538160734
- Douglas Cifuentes, D.O.Perrysburg, OH 435511689677544
- Annette Collier, MDPerrysburg, OH 435511336123108
- Mahmood Darr, M.D.Perrysburg, OH 435511780681197
- Mahdi Doumet, MDPerrysburg, OH 435511801880471
- Sharon Erel, MDPerrysburg, OH 435511871592618
- John McGreevey, M.D.Perrysburg, OH 435511750366506
Common questions
What is John O. Ranker, MD's NPI number?
John O. Ranker, MD's National Provider Identifier (NPI) is 1508069444, issued on Jun 7, 2007. An NPI identifies a provider in billing; it is not a license.
Where is John O. Ranker, MD located?
The NPPES record lists a practice address at 1103 Village Square Dr, Perrysburg, OH, 43551. Phone: (419) 874-3246. Providers update this record themselves, so call before visiting.
How can I verify John O. Ranker, MD's license?
NPPES lists Ohio license number 57009242, 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 John O. Ranker, MD prescribe under Medicare Part D?
In 2024, John O. Ranker, MD had 2,077 Medicare Part D claims for 310 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.