Gilbert Bader, M.D.
Medical Oncology Physician · Columbus, OH
Gilbert Bader, M.D. is a medical oncology physician with a practice address in Columbus, Ohio, and NPI 1568800738, issued on Jun 10, 2013. Check the license (Ohio 35.147802, as entered in NPPES) on the State Medical Board of Ohio; the Medicare figures below come from public CMS files.
- Name
- Gilbert Bader
- Credential
- M.D.
- Primary taxonomy
- Medical Oncology Physician 207RX0202X
- License numbers
- 35.147802 OH
83673 SC
Self-reported in NPPES; status is on the state search - Practice location
- 1145 Olentangy River RD, Columbus, OH 43212
- Phone
- (614) 293-5066
- Enumerated
- Jun 10, 2013
- Record last updated
- Jul 28, 2023
- Fax
- (614) 293-9449
- Medicaid ID
- 0022108 OH
- Medicare enrollment
- Enrolled (PECOS I20230714001280); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest medical oncology physician records → All 169 in Ohio → Look up another NPI →
Also registered at 1145 Olentangy River RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Doreen Agnese, MDSurgical Oncology Physician1740247816
- Stacy Allen, PA-CPhysician Assistant1548970247
- Mollie Arnott, APRN-CNPNurse Practitioner1861290272
- Annabel Baek, MDPlastic Surgery Physician1598389629
- Michael Berger, PHARMDOncology Pharmacist1609230838
- Sasha BeyerRadiation Oncology Physician1568880730
Verify Gilbert Bader in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersState Medical Board of Ohio
Search for license 35.147802Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
46% fewer Medicare Part D claims than the average medical oncology physician in 2024
380 Medicare Part D claims for 109 beneficiaries, against an average of 703 among the 4,230 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.
Most prescribed
- Anastrozole184 claims
- Tamoxifen Citrate34 claims
- Letrozole33 claims
- Ondansetron Hcl21 claims
- Prochlorperazine Maleate14 claims
- Loperamide13 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
- Osu Internal Medicine LLCColumbus, OH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gilbert Bader among 169 medical oncology physician records in Ohio
Gilbert Bader, M.D. is one of 169 medical oncology physician records with a practice address in Ohio. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 70% of them.
- NPI issued2013 · 70% of these records are older, 24% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 79% of these records are
- Graduated2007 · median 2006 among the 132 with a school on file
- Record last updated2023 · 41% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RX0202X and a Ohio practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Oncology Physician providers in Ohio
There are 169 medical oncology physician records in Ohio.
All 169 in Ohio → Every provider in Columbus → Medical Oncology Physician nationwide →
The 8 medical oncology physician records with the nearest ZIP codes
- Ashley Davenport, M.D.Columbus, OH 432121891113759
- Margaret Gatti-Mays, M.D.Columbus, OH 432121215226543
- Kai Johnson, MDColumbus, OH 432121538689682
- Nerea Lopetegui-Lia, M.D.Columbus, OH 432121790210300
- Arya Roy, MDColumbus, OH 432121225522816
- Sagar Sardesai, M.D.Columbus, OH 432121851610091
- Daniel Stover, M.D.Columbus, OH 432121043484439
- Robert Wesolowski, MDColumbus, OH 432121821264623
Common questions
What is Gilbert Bader, M.D.'s NPI number?
Gilbert Bader, M.D.'s National Provider Identifier (NPI) is 1568800738, issued on Jun 10, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Gilbert Bader, M.D. located?
The NPPES record lists a practice address at 1145 Olentangy River RD, Columbus, OH, 43212. Phone: (614) 293-5066. Providers update this record themselves, so call before visiting.
How can I verify Gilbert Bader, M.D.'s license?
NPPES lists Ohio license number 35.147802, 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 Gilbert Bader, M.D. prescribe under Medicare Part D?
In 2024, Gilbert Bader, M.D. had 380 Medicare Part D claims for 109 beneficiaries; the average among medical oncology physician prescribers was 703. 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.