Mark E. Johns, MD
Hematology & Oncology Physician · Cincinnati, OH
Mark E. Johns, MD is a hematology & oncology physician with a practice address in Cincinnati, Ohio, and NPI 1407040884, issued on Aug 29, 2007. Check the license (Ohio 35.125806, as entered in NPPES) on the State Medical Board of Ohio; the Medicare figures below come from public CMS files.
- Name
- Mark E. Johns
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License numbers
- 35.125806 OH
47008 MN
Self-reported in NPPES; status is on the state search - Practice location
- 601 Ivy Gtwy Ste 1100, Cincinnati, OH 45245
- Phone
- (513) 751-2273
- Enumerated
- Aug 29, 2007
- Record last updated
- Apr 22, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid IDs
- 34561500 WI
1407040884 MN
0139551 OH - Medicare enrollment
- Enrolled (PECOS I20150618003059); accepts Medicare assignment
- Medical or professional school
- Ohio State University College Of Medicine, 2001
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 513 in Ohio → Look up another NPI →
Also registered at 601 Ivy Gtwy Ste 1100
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Aimee Brown, CNPFamily Nurse Practitioner1427456193
- David Drosick, MDMedical Oncology Physician1699768499
- Ajit Gubbi, D.OGynecologic Oncology Physician1023273687
- Benjamin Herms, M.D.Hematology & Oncology Physician1730218876
- Hannah Kolish, CNPFamily Nurse Practitioner1861969487
- Kristina Liming, CNPFamily Nurse Practitioner1467967406
Verify Mark E. Johns in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersState Medical Board of Ohio
Search for license 35.125806Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.7 times the Medicare Part D claims of the average hematology & oncology physician in 2024
3,264 Medicare Part D claims for 508 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. 323 claims were for opioids.
Most prescribed
- Anastrozole613 claims
- Eliquis165 claims
- Alendronate Sodium149 claims
- Oxycodone Hcl148 claims
- Ondansetron Hcl135 claims
- Prochlorperazine Maleate124 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: $1,329.28
20 payments; by number, the most common kind was food and beverage; the largest payer was Novartis Pharmaceuticals Corporation. The 8,560 providers of this specialty with any payment received $7,481.41 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
- Oncology Hematology Care IncFairfield, OH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark E. Johns among 513 hematology & oncology physician records in Ohio
Mark E. Johns, MD is one of 513 hematology & oncology physician records with a practice address in Ohio. 83% 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 52% of them.
- NPI issued2007 · 52% of these records are older, 40% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2001 · median 2001 among the 369 with a school on file
- Record last updated2021 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Ohio practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in Ohio
There are 513 hematology & oncology physician records in Ohio.
All 513 in Ohio → Every provider in Cincinnati → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Benjamin Herms, M.D.Cincinnati, OH 452451730218876
- Anu Paul, MBBSCincinnati, OH 452451346575768
- Samer Alsidawi, M.DCincinnati, OH 452471932455896
- Ranga Brahmamdam, M.D.Cincinnati, OH 452471417995820
- David Draper, M.D.Cincinnati, OH 452471083641856
- Nick Huang, M.D., PH.D.Cincinnati, OH 452471508220120
- Jason Jones, MDCincinnati, OH 452471518164672
- Apurva Mehta, MDCincinnati, OH 452471245211655
Common questions
What is Mark E. Johns, MD's NPI number?
Mark E. Johns, MD's National Provider Identifier (NPI) is 1407040884, issued on Aug 29, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Mark E. Johns, MD located?
The NPPES record lists a practice address at 601 Ivy Gtwy Ste 1100, Cincinnati, OH, 45245. Phone: (513) 751-2273. Providers update this record themselves, so call before visiting.
How can I verify Mark E. Johns, MD's license?
NPPES lists Ohio license number 35.125806, 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 Mark E. Johns, MD prescribe under Medicare Part D?
In 2024, Mark E. Johns, MD had 3,264 Medicare Part D claims for 508 beneficiaries; the average among hematology & oncology physician prescribers was 877. 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.