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JAMES PENG M.D.
NPI 1780871780
Emergency Medicine in Chippewa Falls, WI

Active since October 03, 2007PECOS EnrolledAccepts Medicare Assignment
2661 COUNTY HIGHWAY I, CHIPPEWA FALLS, WI 54729(715) 723-1811 Get Directions Write a Review

NPPES record last updated: July 22, 2022. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Jul 22, 2022, Jul 25, 2019, Aug 9, 2016 (3 updates tracked since 2016).

About James Peng M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JAMES PENG M.D. (NPI 1780871780) is an individual emergency medicine provider in Chippewa Falls, Wisconsin, licensed in Wisconsin (65480-20) and active in the NPI registry since October 2007. He is enrolled in Medicare PECOS, is affiliated with Chi St Alexius Health Williston, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1780871780
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameJAMES PENGCredential: M.D.
Location Address2661 COUNTY HIGHWAY IChippewa Falls, WI 54729-5407
Mailing Address1400 Bellinger StEau Claire, WI 54703-5222 · (715) 838-5222
Phone(715) 723-1811
Sole ProprietorYes
Medical School CMSState University Of New York Downstate Medical CenterGraduated 2006
Enumeration DateOctober 3, 2007
Last NPPES UpdateJuly 22, 20223 updates tracked since enumeration
NPPES CertifiedJuly 22, 2022
✔ NPI 1780871780 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
Licenses✔ Licensed in WI · 65480-20✔ Licensed in NY · 257256-1✔ Licensed in CA · A101720✔ Licensed in IN · 01083951A
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
2661 COUNTY HIGHWAY I, Chippewa Falls, WI 54729
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Other Names 1

Other Name (5)James S Peng Md

Secondary Practice Locations 2

Location 1900 W Clairemont AveEau Claire, WI 54701-6122 · Phone (715) 717-4121
Location 21400 Bellinger StEau Claire, WI 54703-5222 · Phone (715) 838-5222

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross Blue Shield of North Dakota, Medica.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

James Peng M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID8224196605
PECOS Enrollment IDI20160818002438
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

7

Medicare enrollment records show James Peng reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Mchs Hospitals Inc
15 mi
Clinic/Center
2310 CRAIG RD
Eau Claire, WI 54701
  • Reassigned Medicare billing, Wisconsin enrollment
  • Also billed through NPI 1952890873 (Wisconsin)
  • 2,476 clinicians in this Medicare group
NPI 1316416035 (715) 858-8100
Marshfield Clinic Inc
59 mi
Clinic/Center
1000 N OAK AVE
Marshfield, WI 54449
  • Reassigned Medicare billing, Wisconsin enrollment
  • 2,540 clinicians in this Medicare group
NPI 1952347981 (715) 387-5511
Aspirus Wausau Hospital Inc
67 mi
Clinic/Center
103 S 3RD AVE
Edgar, WI 54426
  • Reassigned Medicare billing, Wisconsin enrollment
  • 633 clinicians in this Medicare group
NPI 1447580725 (715) 352-2333
Thedacare Medical Center - Waupaca, Inc.
115 mi
Critical Access
N2610 WI 22
Waupaca, WI 54981
  • Reassigned Medicare billing, Wisconsin enrollment
  • 85 clinicians in this Medicare group
NPI 1710333893 (715) 258-1021
Vituity-Wisconsin Em Sc
157 mi
Emergency Medicine
855 S MAIN ST
Oconto Falls, WI 54154
  • Reassigned Medicare billing, Wisconsin enrollment
  • 104 clinicians in this Medicare group
NPI 1710754296 (920) 846-3444
Cep America LLC
301 mi
Emergency Medicine
4321 FIR ST
East Chicago, IN 46312
  • Reassigned Medicare billing, Indiana enrollment
  • 598 clinicians in this Medicare group
NPI 1336805563 (219) 392-1700
Mercy Medical Center
627 mi
Nurse Anesthetist, Certified Registered
1301 15TH AVE W
Williston, ND 58801
  • Reassigned Medicare billing, North Dakota enrollment
  • Also billed through NPI 1902824576 (North Dakota)
  • 268 clinicians in this Medicare group
NPI 1700990041 (701) 774-7470

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 3

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
38 services36 patients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010
A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.
22 services22 patients
Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
15 services15 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Chi St Alexius Health Williston

Critical Access Hospitals · Williston, ND
OwnershipVoluntary non-profit - Church
CMS Certification Number351334
Location1301 15th Ave WWilliston, ND 58801 · Williams County
Emergency services Birthing friendly

Hshs St Clare Memorial Hospital

Critical Access Hospitals · Oconto Falls, WI
OwnershipVoluntary non-profit - Private
CMS Certification Number521310
Location855 S Main StOconto Falls, WI 54154 · Oconto County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 54729 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$82.92 typical visit price
range $53.90 – $163.24
Typical copayment $20.73 (range $13.47 – $40.81)
Most-billed visit code 99203
Established Patient
$95.41 typical visit price
range $17.40 – $133.76
Typical copayment $23.85 (range $4.35 – $33.44)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

IHC-ST. JOSEPHS EMERGENCY PHYSICIANS, LLC
Emergency Medicine
2661 COUNTY HIGHWAY I
CHIPPEWA FALLS, WI 54729
Chippewa County (414) 290-6720
DESIREE CIOKIEWICZ SAC
Counselor (Addiction (Substance Use Disorder))
2661 COUNTY HIGHWAY I
CHIPPEWA FALLS, WI 54729
Chippewa County (715) 723-5585
KATHRYN L JOHNSON MA, LPC
Counselor (Addiction (Substance Use Disorder))
2661 COUNTY HIGHWAY I
CHIPPEWA FALLS, WI 54729
Chippewa County (715) 723-5585
BEN J SEBRANEK MS, CADC III
Counselor (Addiction (Substance Use Disorder))
2661 COUNTY HIGHWAY I
CHIPPEWA FALLS, WI 54729
Chippewa County (715) 723-5585
MR. CHRIS ALLEN KLAY PT
Physical Therapist
2661 COUNTY HIGHWAY I
CHIPPEWA FALLS, WI 54729
Chippewa County (715) 717-7545
ANGELA M PEDRETTI MA LPC
Counselor (Professional)
2661 COUNTY HIGHWAY I
CHIPPEWA FALLS, WI 54729
Chippewa County (715) 723-1811
JEAN LEAFBLAD
Physical Therapist
2661 COUNTY HIGHWAY I
CHIPPEWA FALLS, WI 54729
Chippewa County (715) 726-3455
JORDAN KOLB SAC-IT
Counselor (Addiction (Substance Use Disorder))
2661 COUNTY HIGHWAY I
CHIPPEWA FALLS, WI 54729
Chippewa County (715) 723-5585

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is James Peng's NPI number?

The NPI number for James Peng is 1780871780. It was assigned to this individual provider in the NPPES registry on October 3, 2007. The provider is also known as James S Peng MD.

Where is James Peng located?

James Peng practices at 2661 County Highway I, Chippewa Falls, WI 54729. The listed phone number is (715) 723-1811.

What is James Peng's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is James Peng enrolled in Medicare?

Yes. James Peng is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for James Peng's services?

According to the CMS Revalidation Reassignment List (October 2026 release), James Peng reassigns Medicare benefits to 7 organizations: Mchs Hospitals Inc (Eau Claire, WI), Marshfield Clinic Inc (Marshfield, WI), Aspirus Wausau Hospital Inc (Edgar, WI), Thedacare Medical Center - Waupaca, Inc. (Waupaca, WI), Vituity-Wisconsin Em Sc (Oconto Falls, WI) and 2 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for James Peng's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does James Peng accept?

Health plans from Blue Cross Blue Shield of North Dakota and Medica list James Peng as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is James Peng affiliated with any hospitals?

According to CMS data, James Peng is affiliated with Chi St Alexius Health Williston and Hshs St Clare Memorial Hospital.

When was this NPI record last updated?

The NPPES record for James Peng was last updated on July 22, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.