Karen A. Diefenbach, M.D.
Pediatric Surgery Physician · Columbus, OH
Karen A. Diefenbach, M.D. is a pediatric surgery physician with a practice address in Columbus, Ohio, and NPI 1164658258, issued on Jun 3, 2009. Check the license (Ohio 35.099337, as entered in NPPES) on the State Medical Board of Ohio; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Karen A. Diefenbach
- Credential
- M.D.
- Primary taxonomy
- Pediatric Surgery Physician 2086S0120X
- License number
- 35.099337 OH
Self-reported in NPPES; status is on the state search - Practice location
- 555 S 18TH St, Columbus, OH 43205
- Phone
- (614) 722-6200
- Enumerated
- Jun 3, 2009
- Record last updated
- Nov 19, 2024
- Medicaid ID
- 0067098 OH
- Entity
- Type 1 · individual
Also registered at 555 S 18TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Shoghik Akoghlanian, MDPediatric Rheumatology Physician1326247784
- Samiah Al-ZaidyNeurology with Special Qualifications in Child Neurology Physician1043588494
- Dara Albert, D.O.Neurology with Special Qualifications in Child Neurology Physician1174811129
- Jennifer Aldrink, MDPediatric Surgery Physician1952591919
- Fatema Ali, M.DPediatric Gastroenterology Physician1508420894
- Seth Alpert, MDPediatric Urology Physician1457447336
Verify Karen A. Diefenbach in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersState Medical Board of Ohio
Search for license 35.099337Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Pediatric Surgery Physician providers in Ohio
There are 84 pediatric surgery physician records in Ohio. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
Other pediatric surgery physician records in Ohio
- Alreem Al HinaiCleveland, OH1598532947
- Jennifer Aldrink, MDColumbus, OH1952591919
- Maria Alonso, M.D.Cincinnati, OH1659472314
- David Andrews, M.D.Akron, OH1821196825
- Arturo Aranda, MDDayton, OH1700183282
- Richard Azizkhan, MDCincinnati, OH1790736056
- Edward Barksdale, MDCleveland, OH1871565762
- Lauren Baumann, MDCincinnati, OH1891113254
- Gail Besner, M.D.Columbus, OH1982653309
- Alexander Bondoc, MDCincinnati, OH1801002415
Common questions
What is Karen A. Diefenbach, M.D.'s NPI number?
Karen A. Diefenbach, M.D.'s National Provider Identifier (NPI) is 1164658258, issued on Jun 3, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Karen A. Diefenbach, M.D. located?
The NPPES record lists a practice address at 555 S 18TH St, Columbus, OH, 43205. Phone: (614) 722-6200. Providers update this record themselves, so call before visiting.
How can I verify Karen A. Diefenbach, M.D.'s license?
NPPES lists Ohio license number 35.099337, 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.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.