Joseph A. Assenmacher, M.D.
Orthopaedic Surgery Physician · Oregon, OH
Joseph A. Assenmacher, M.D. is an orthopaedic surgery physician with a practice address in Oregon, Ohio, and NPI 1760484026, issued on Jun 1, 2005. Check the license (Ohio 35078665, as entered in NPPES) on the State Medical Board of Ohio; the Medicare figures below come from public CMS files.
- Name
- Joseph A. Assenmacher
- Credential
- M.D.
- Primary taxonomy
- Orthopaedic Surgery Physician 207X00000X
- License number
- 35078665 OH
Self-reported in NPPES; status is on the state search - Practice location
- 2751 Bay Park Dr, Oregon, OH 43616
- Phone
- (419) 690-8811
- Enumerated
- Jun 1, 2005
- Record last updated
- Nov 3, 2023
- Fax
- (419) 697-6750
- Medicaid ID
- 2221189 OH
- Medicare enrollment
- Enrolled (PECOS I20070208000193); accepts Medicare assignment
- Medical or professional school
- University Of Cincinnati College Of Medicine, 1995
- Entity
- Type 1 · individual
8 nearest orthopaedic surgery physician records → All 921 in Ohio → Look up another NPI →
Also registered at 2751 Bay Park Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Craig Assenmacher, MDOrthopaedic Surgery Physician1477615292
- Dennis Assenmacher, M.D.Orthopaedic Surgery Physician1154323384
- Danielle Barrow, M.D.Obstetrics & Gynecology Physician1811930290
- Brenda Brien, CNPFamily Nurse Practitioner1598762502
- Ziya Celik, MDSurgery Physician1275530164
- John Credico, M.D.Obstetrics Physician1023002938
Verify Joseph A. Assenmacher in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersState Medical Board of Ohio
Search for license 35078665Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
71% more Medicare Part D claims than the average orthopaedic surgery physician in 2024
591 Medicare Part D claims for 302 beneficiaries, against an average of 346 among the 16,516 providers of this specialty who prescribed in Part D. 295 claims were for opioids.
Most prescribed
- Oxycodone-Acetaminophen213 claims
- Meloxicam183 claims
- Tramadol Hcl62 claims
- Celecoxib57 claims
- Hydrocodone-Acetaminophen17 claims
- Mupirocin14 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: $611.02
18 payments; by number, the most common kind was food and beverage; the largest payer was Arthrex, Inc. The 15,003 providers of this specialty with any payment received $23,022.89 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
- Promedica Central PhysiciansToledo, OH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Joseph A. Assenmacher among 921 orthopaedic surgery physician records in Ohio
Joseph A. Assenmacher, M.D. is one of 921 orthopaedic surgery physician records with a practice address in Ohio. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 79% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1995 · median 2004 among the 579 with a school on file
- Record last updated2023 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207X00000X and a Ohio practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
8 orthopaedic surgery physician records list a practice address in Oregon
They are 8 of the 519 NPPES records with a practice address in Oregon, and 921 orthopaedic surgery physician records in Ohio.
All 921 in Ohio → Every provider in Oregon → Orthopaedic Surgery Physician nationwide →
The 8 orthopaedic surgery physician records with the nearest ZIP codes
- Dennis Assenmacher, M.D.Oregon, OH 436161154323384
- Craig Assenmacher, MDOregon, OH 436161477615292
- Benjamin Assenmacher, M.D.Oregon, OH 436161386930717
- Leonard Buck, MDOregon, OH 436161184626525
- Enesi Momoh, MDOregon, OH 436161669681797
- Bradley Morse, M.D.Oregon, OH 436161639194749
- Jae Yim, DOOregon, OH 436161841752045
- Karl Beer, M.D.Toledo, OH 436151568577153
Common questions
What is Joseph A. Assenmacher, M.D.'s NPI number?
Joseph A. Assenmacher, M.D.'s National Provider Identifier (NPI) is 1760484026, issued on Jun 1, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Joseph A. Assenmacher, M.D. located?
The NPPES record lists a practice address at 2751 Bay Park Dr, Oregon, OH, 43616. Phone: (419) 690-8811. Providers update this record themselves, so call before visiting.
How can I verify Joseph A. Assenmacher, M.D.'s license?
NPPES lists Ohio license number 35078665, 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 Joseph A. Assenmacher, M.D. prescribe under Medicare Part D?
In 2024, Joseph A. Assenmacher, M.D. had 591 Medicare Part D claims for 302 beneficiaries; the average among orthopaedic surgery physician prescribers was 346. 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.