Alexander Joseph Koehler, MD
Internal Medicine Physician · Dayton, OH
Alexander Joseph Koehler, MD is an internal medicine physician with a practice address in Dayton, Ohio, and NPI 1124656327, issued on Apr 1, 2020. Check the license (Ohio 35.152383, as entered in NPPES) on the State Medical Board of Ohio; the Medicare figures below come from public CMS files.
- Name
- Alexander Joseph Koehler
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 35.152383 OH
Self-reported in NPPES; status is on the state search - Practice location
- 3 W Rahn RD, Dayton, OH 45429
- Phone
- (937) 433-8990
- Enumerated
- Apr 1, 2020
- Record last updated
- Jun 27, 2025
- Medicare enrollment
- Enrolled (PECOS I20250516000236); accepts Medicare assignment
- Medical or professional school
- Wright State University Boonshoft School Of Medicine, 2020
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 5,277 in Ohio → Look up another NPI →
Verify Alexander Joseph Koehler in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersState Medical Board of Ohio
Search for license 35.152383Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average internal medicine physician in 2024
308 Medicare Part D claims for 116 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Omeprazole22 claims
- Amlodipine Besylate14 claims
- Atorvastatin Calcium14 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
- South Dayton Acute Care Consultants, IncDayton, OH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alexander Joseph Koehler among 5,277 internal medicine physician records in Ohio
Alexander Joseph Koehler, 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 2020, is newer than 85% of them.
- NPI issued2020 · 85% of these records are older, 12% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated2020 · median 2006 among the 3,414 with a school on file
- Record last updated2025 · 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).
225 internal medicine physician records list a practice address in Dayton
They are 225 of the 12,431 NPPES records with a practice address in Dayton, and 5,277 internal medicine physician records in Ohio.
All 5,277 in Ohio → Every provider in Dayton → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Malak Adib, MDKettering, OH 454291679538557
- Loveleen Bains, MDDayton, OH 454291265424030
- Kurt Fleagle, M.D.Kettering, OH 454291750382602
- Nancy Liu, MDKettering, OH 454291992706816
- Joseph Mastandrea, D.O.Kettering, OH 454291649262924
- John Mauer, MDKettering, OH 454291407812829
- Jo Pelfrey, M.D.Kettering, OH 454291588665582
- Indu Rao, MDDayton, OH 454291447242045
Common questions
What is Alexander Joseph Koehler, MD's NPI number?
Alexander Joseph Koehler, MD's National Provider Identifier (NPI) is 1124656327, issued on Apr 1, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Alexander Joseph Koehler, MD located?
The NPPES record lists a practice address at 3 W Rahn RD, Dayton, OH, 45429. Phone: (937) 433-8990. Providers update this record themselves, so call before visiting.
How can I verify Alexander Joseph Koehler, MD's license?
NPPES lists Ohio license number 35.152383, 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 Alexander Joseph Koehler, MD prescribe under Medicare Part D?
In 2024, Alexander Joseph Koehler, MD had 308 Medicare Part D claims for 116 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.