James Peng, M.D.
Emergency Medicine Physician · Chippewa Falls, WI
James Peng, M.D. is an emergency medicine physician with a practice address in Chippewa Falls, Wisconsin, and NPI 1780871780, issued on Oct 3, 2007. Check the license (Wisconsin 65480-20, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- James Peng
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- 65480-20 WI
A101720 CA
01083951A IN
257256-1 NY
Self-reported in NPPES; status is on the state search - Practice location
- 2661 County Highway I, Chippewa Falls, WI 54729
- Phone
- (715) 723-1811
- Enumerated
- Oct 3, 2007
- Record last updated
- Jul 22, 2022
- Medicare enrollment
- Enrolled (PECOS I20160818002438); accepts Medicare assignment
- Medical or professional school
- State University Of New York Downstate Medical Center, 2006
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,464 in Wisconsin → Look up another NPI →
Also registered at 2661 County Highway I
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Emily BlaskeyPhysical Therapist1689704058
- Joel Breitung, MSWCounselor1700985512
- Janell Bromeisl, CSW, CADC IIIClinical Social Worker1609939669
- Desiree Ciokiewicz, SACAddiction (Substance Use Disorder) Counselor1003196494
Verify James Peng in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 65480-20Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
46% fewer Medicare Part D claims than the average emergency medicine physician in 2024
121 Medicare Part D claims for 84 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
Most prescribed
- Cephalexin18 claims
- Ondansetron Odt11 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
- Vituity-Wisconsin EM SCPleasant Prairie, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
James Peng among 1,464 emergency medicine physician records in Wisconsin
James Peng, 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. Its NPI, issued in 2007, is newer than 42% of them.
- NPI issued2007 · 42% of these records are older, 52% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2006 · median 2011 among the 844 with a school on file
- Record last updated2022 · 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.
All 1,464 in Wisconsin → Every provider in Chippewa Falls → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Emily Mason, M.D.Chippewa Falls, WI 547291811196637
- Michael Walton, MDChippewa Falls, WI 547291497732085
- Ethan Young, D.O.Chippewa Falls, WI 547291053792895
- Joseph Williams, MDDurand, WI 547361902048671
- Matthew Borgo, M.D.Menomonie, WI 547511932424421
- Albert Hsiao, MDMenomonie, WI 547511144273285
- Jeffrey Ilsley, MDMenomonie, WI 547511194703991
- Marek Kaminski, M.D.Menomonie, WI 547511417996851
Common questions
What is James Peng, M.D.'s NPI number?
James Peng, M.D.'s National Provider Identifier (NPI) is 1780871780, issued on Oct 3, 2007. An NPI identifies a provider in billing; it is not a license.
Where is James Peng, M.D. located?
The NPPES record lists a practice address at 2661 County Highway I, Chippewa Falls, WI, 54729. Phone: (715) 723-1811. Providers update this record themselves, so call before visiting.
How can I verify James Peng, M.D.'s license?
NPPES lists Wisconsin license number 65480-20, as entered by the provider. 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.
How much does James Peng, M.D. prescribe under Medicare Part D?
In 2024, James Peng, M.D. had 121 Medicare Part D claims for 84 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.