James Joseph Harper, M.D.
Emergency Medicine Physician · Oconomowoc, WI
James Joseph Harper, M.D. is an emergency medicine physician with a practice address in Oconomowoc, Wisconsin, and NPI 1922132364, issued on Mar 16, 2007. Check the license on the Wisconsin Medical Examining Board; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- James Joseph Harper
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- LL 29029 SC
Self-reported in NPPES; status is on the state search - Practice location
- 791 Summit Ave, Oconomowoc, WI 53066
- Phone
- (262) 569-0251
- Enumerated
- Mar 16, 2007
- Record last updated
- Nov 20, 2025
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,464 in Wisconsin → Look up another NPI →
Also registered at 791 Summit Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Thomas Ruffalo, PAPhysician Assistant1063407013
Verify James Joseph Harper in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining BoardCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
James Joseph Harper among 1,464 emergency medicine physician records in Wisconsin
James Joseph Harper, M.D. is one of 1,464 emergency medicine physician records with a practice address in Wisconsin. 79% 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 2007, is newer than 42% of them.
- NPI issued2007 · 42% of these records are older, 52% newer
- In a Medicare fileNo · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 58% of these records are
- Record last updated2025 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in Wisconsin
There are 1,464 emergency medicine physician records in Wisconsin. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 1,464 in Wisconsin → Every provider in Oconomowoc → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Steven Andrews, MDSummit, WI 530661649224767
- Christopher George, MDSummit, WI 530661437265865
- Jeffery Glaspy, MDOconomowoc, WI 530661619925237
- Timothy Hill, M.D.Oconomowoc, WI 530661861478430
- Mark Hlava, MDSummit, WI 530661821048224
- Michael Kefer, M.D.Summit, WI 530661457337891
- Eric Moore, MDSummit, WI 530661417156142
- Gregory Nelson, MDSummit, WI 530661841299385
Common questions
What is James Joseph Harper, M.D.'s NPI number?
James Joseph Harper, M.D.'s National Provider Identifier (NPI) is 1922132364, issued on Mar 16, 2007. An NPI identifies a provider in billing; it is not a license.
Where is James Joseph Harper, M.D. located?
The NPPES record lists a practice address at 791 Summit Ave, Oconomowoc, WI, 53066. Phone: (262) 569-0251. Providers update this record themselves, so call before visiting.
How can I verify James Joseph Harper, M.D.'s license?
Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. 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.