Dr. Joseph A. Assenmacher, MD
- Medicare services, 2024
- 3,571
- Medicare patients, 2024
- 430
- Part D claims, 2024
- 591
- Hospital affiliations
- 5
- Industry payments
- $21,707
- Practice address
- 1 Owens Corning Pkwy, Toledo, OH 43659
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Promedica Physicians Owens Corning - HOPD
Acute Care Hospital outpatient department · Toledo, Ohio
Find Dr. Assenmacher's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Joseph A. Assenmacher is an orthopedic surgeon in Toledo, Ohio
Dr. Assenmacher practices at Promedica Physicians Owens Corning - HOPD in Toledo, Ohio.
Dr. Assenmacher's NPI, 1760484026, was assigned on June 1, 2005. Dr. Assenmacher graduated from University of Cincinnati College of Medicine in 1995. Dr. Assenmacher holds Ohio license 35078665.
- NPI
- 1760484026NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2163424805
- NPI enumeration date
- June 1, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 57
- Medical school graduation
- 1995
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Joseph A. Assenmacher practices at 2 locations in Toledo, Ohio
Dr. Assenmacher's primary practice is Promedica Physicians Owens Corning - HOPD, at 1 Owens Corning Pkwy, Toledo, OH 43659. Dr. Assenmacher also practices at ProMedica Central Physicians, 100 Madison Ave, Toledo, OH 43604.
- Promedica Physicians Owens Corning - HOPDPrimary1 Owens Corning Pkwy, Toledo, OH 43659
- ProMedica Central Physicians100 Madison Ave, Toledo, OH 43604 · Lucas CountyPhone(567) 585-1964
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. Joseph A. Assenmacher is affiliated with 11 sites of care and 2 medical groups
Dr. Assenmacher's primary practice is Promedica Physicians Owens Corning - HOPD in Toledo, Ohio. Dr. Assenmacher is also affiliated with ProMedica Toledo Hospital. The medical group on file is ProMedica Physicians. Dmand AI also links Dr. Assenmacher to 4 more hospitals, 3 home health agencies, 2 group practices and clinics and 1 medical group, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Joseph A. Assenmacher's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Assenmacher practices, 11 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Promedica Physicians Owens Corning - HOPD | Available with a free account |
| +10 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Joseph A. Assenmacher is one of 828 orthopedic surgeons in Ohio
Orthopaedic surgery is Dr. Assenmacher's primary specialty in the NPI Registry, under taxonomy code 207X00000X. Dr. Assenmacher is licensed in Ohio.
Specialties and state licenses
- Orthopaedic surgery, OhioPrimary
Orthopedic surgeons near Dr. Assenmacher
Counts of orthopedic surgeons with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Joseph A. Assenmacher billed Medicare for 3,571 services in 2024
CMS data shows 3,571 Medicare services from Dr. Assenmacher across 16 procedure codes in 2024, for 430 Medicare patients. Medicare paid $234,759 for them.
Dr. Assenmacher's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 2,2612024: 2,1366%
- Imaging
- 2023: 5332024: 5065%
- Office and hospital visits
- 2023: 5002024: 4833%
- Surgery
- 2023: 4652024: 4464%
Where Dr. Assenmacher's Medicare services took place, 2024
- In an office3,41596%
- In a facility1564%
Dr. Assenmacher compared with the Ohio median for orthopedic surgeons, 2024
- Dr. Assenmacher
- Ohio median
- Medicare services
- 3,571vs 8044.4 times
- Medicare patients
- 430vs 23682% above
- Part D claims
- 546vs 1234.4 times
Medians across 822 orthopedic surgeons in Ohio with Dmand AI profiles that report each measure.
Dr. Assenmacher's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Assenmacher?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Assenmacher and other orthopedic surgeons in Ohio.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Joseph A. Assenmacher treated 430 Medicare patients in 2024, average age 74
CMS counts 430 Medicare patients who saw Dr. Assenmacher in 2024. The largest group is 65 to 74, with 256 patients. 75% of them have arthritis, and 75% have high cholesterol. 3% are also on Medicaid. Their average risk score is 0.90, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Assenmacher's median patient age at 68, with 47% women.
Dr. Assenmacher's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Assenmacher's Medicare patients by sex, 2024
- Women23053%
- Men20047%
Chronic conditions among Dr. Assenmacher's Medicare patients, 2024
- Arthritis75%
- High cholesterol75%
- High blood pressure72%
- Anxiety25%
- Diabetes24%
- Ischemic heart disease24%
- Mood disorders20%
- Depression19%
Share of Medicare patients with each condition. A patient can have several.
Dr. Assenmacher's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women47%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Joseph A. Assenmacher wrote 591 Medicare Part D claims in 2024
In 2024, Dr. Assenmacher wrote 591 Medicare Part D claims for 302 patients. 98% of them were for generic drugs. CMS names the drug for 546 of them, across 6 drugs with 11 or more claims each, at $3,663 in total drug cost. In 2023, CMS named 587 claims across 7 drugs.
Dr. Assenmacher's Part D claims by kind of drug, 2024
- Generic581 claims98%
- Brand-name and other10 claims2%
Dr. Assenmacher's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Assenmacher's Part D claims, 2024
- Opioids50%295 of 591 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 5872024: 5467%
Drugs named by CMS: 6 in 2024, 7 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Joseph A. Assenmacher ranks in the 90th percentile for knee replacement in Medicare
Dr. Assenmacher accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 83 procedures of knee replacement by Dr. Assenmacher, more than 90% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Assenmacher ranks in Medicare procedure volume
- Knee replacement
- 90th percentile83 procedures
- Upper limb (arm) arthroscopy (minimally invasive joint repair)
- 76th percentile32 procedures
- Hip replacement
- 72nd percentile26 procedures
- Lower limb (leg) arthroscopy (minimally invasive joint repair)
- 83rd percentile12 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Joseph A. Assenmacher received $21,707 in industry payments from 2016 to 2025
CMS Open Payments shows 196 general payments to Dr. Assenmacher from 14 drug and device companies from 2016 to 2025. Education make up the largest share, 34% of the total. Arthrex, Inc. paid the most, $9,674.
General payments to Dr. Assenmacher by program year, 2016 to 2025
General payments to Dr. Assenmacher by kind, 2016 to 2025
- Education$7,39234%
- Travel and lodging$7,15933%
- Food and beverage$7,15533%
Companies that paid Dr. Assenmacher the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Joseph A. Assenmacher graduated from University of Cincinnati College of Medicine
Dr. Assenmacher graduated from University of Cincinnati College of Medicine in 1995.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Joseph A. Assenmacher's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Joseph A. Assenmacher
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Joseph A. Assenmacher's NPI number?
Dr. Joseph A. Assenmacher's NPI number is 1760484026. It was assigned on June 1, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Joseph A. Assenmacher?
Dr. Joseph A. Assenmacher is an orthopedic surgeon in Toledo, Ohio. The primary specialty in the NPI Registry is Orthopaedic Surgery Physician (taxonomy code 207X00000X).
Where does Dr. Joseph A. Assenmacher practice?
Dr. Assenmacher practices at 1 Owens Corning Pkwy, Toledo, OH 43659. Dr. Assenmacher also practices at 100 Madison Ave, Toledo, OH 43604. Dr. Assenmacher's primary practice is Promedica Physicians Owens Corning - HOPD in Toledo, Ohio. Dmand AI also links Dr. Assenmacher to 4 hospitals, 3 home health agencies, 2 group practices and clinics and 1 medical group.
What is Dr. Joseph A. Assenmacher's medical license number?
Dr. Assenmacher holds Ohio license 35078665.
Which hospitals is Dr. Joseph A. Assenmacher affiliated with?
Dr. Assenmacher is affiliated with ProMedica Toledo Hospital. Dmand AI links Dr. Assenmacher to 4 more hospitals.
What medical group is Dr. Joseph A. Assenmacher part of?
Dr. Assenmacher is linked to ProMedica Physicians. Dmand AI links Dr. Assenmacher to 1 more medical group.
Does Dr. Joseph A. Assenmacher accept Medicare?
Yes. CMS data shows Dr. Assenmacher billed Medicare for 3,571 services in 2024, and Dr. Assenmacher accepts Medicare assignment.
How many Medicare patients does Dr. Joseph A. Assenmacher see?
CMS counts 430 Medicare patients who saw Dr. Assenmacher in 2024, with an average age of 74.
What services does Dr. Joseph A. Assenmacher bill to Medicare?
In 2024, Dr. Assenmacher's most billed Medicare services were injected or infused drug (J1100), surgery: bones and joints (20610) and office visit, established patient (99213).
Where did Dr. Joseph A. Assenmacher go to medical school?
Dr. Assenmacher graduated from University of Cincinnati College of Medicine in 1995.
Show 3 more questionsShow fewer questions
What drugs does Dr. Joseph A. Assenmacher prescribe most?
In 2024 Medicare Part D data, Dr. Assenmacher's most prescribed drugs by claims were Oxycodone-Acetaminophen, Meloxicam and Tramadol HCl.
Has Dr. Joseph A. Assenmacher received payments from drug or device companies?
CMS Open Payments shows $21,707 in general payments to Dr. Assenmacher from 14 companies from 2016 to 2025. The largest total came from Arthrex, Inc.
How long has Dr. Joseph A. Assenmacher been practicing?
Dr. Assenmacher graduated from medical school in 1995, 31 years ago.
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