NPPES file of Aug 9, 2026

Dennis R. Assenmacher, M.D.

Orthopaedic Surgery Physician · Oregon, OH

Dennis R. Assenmacher, M.D. is an orthopaedic surgery physician with a practice address in Oregon, Ohio, and NPI 1154323384, issued on Jun 1, 2005. Check the license (Ohio 35039245, as entered in NPPES) on the State Medical Board of Ohio; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1154323384
Name
Dennis R. Assenmacher
Credential
M.D.
Primary taxonomy
Orthopaedic Surgery Physician 207X00000X
License number
35039245 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) 697-5760
Medicaid ID
0305299 OH
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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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.

  1. Craig Assenmacher, MDOrthopaedic Surgery Physician1477615292
  2. Joseph Assenmacher, M.D.Orthopaedic Surgery Physician1760484026
  3. Danielle Barrow, M.D.Obstetrics & Gynecology Physician1811930290
  4. Brenda Brien, CNPFamily Nurse Practitioner1598762502
  5. Ziya Celik, MDSurgery Physician1275530164
  6. John Credico, M.D.Obstetrics Physician1023002938

Verify Dennis R. Assenmacher in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersState Medical Board of Ohio
    Search for license 35039245    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Ohio license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Dennis R. Assenmacher among 921 orthopaedic surgery physician records in Ohio

Dennis R. 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 not. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 79% newer
  • In a Medicare fileNo · 77% of these records are
  • In the CMS Doctors and Clinicians fileNo · 63% of these records are
  • 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. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 921 in Ohio → Every provider in Oregon → Orthopaedic Surgery Physician nationwide →

The 8 orthopaedic surgery physician records with the nearest ZIP codes

  1. Joseph Assenmacher, M.D.Oregon, OH 436161760484026
  2. Craig Assenmacher, MDOregon, OH 436161477615292
  3. Benjamin Assenmacher, M.D.Oregon, OH 436161386930717
  4. Leonard Buck, MDOregon, OH 436161184626525
  5. Enesi Momoh, MDOregon, OH 436161669681797
  6. Bradley Morse, M.D.Oregon, OH 436161639194749
  7. Jae Yim, DOOregon, OH 436161841752045
  8. Karl Beer, M.D.Toledo, OH 436151568577153

Common questions

What is Dennis R. Assenmacher, M.D.'s NPI number?

Dennis R. Assenmacher, M.D.'s National Provider Identifier (NPI) is 1154323384, issued on Jun 1, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Dennis R. 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 Dennis R. Assenmacher, M.D.'s license?

NPPES lists Ohio license number 35039245, 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.