JAMES ROBERT BAER MD
NPI 1275531493
Radiology - Radiation Oncology in Eau Claire, WI

Q: What is James Baer's NPI number?

The NPI number for James Baer is 1275531493. It was assigned to this individual provider in the NPPES registry on July 12, 2005.

Q: What is James Baer's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.

Q: When was this NPI record last updated?

The NPPES record for James Baer was last updated on September 16, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 months 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.

Active since July 12, 2005PECOS EnrolledAccepts Medicare Assignment

1400 BELLINGER STREET, EAU CLAIRE, WI 54703(715) 838-5222 Get Directions Write a Review

NPPES record last updated: September 16, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Sep 16, 2025, Jun 26, 2025, Sep 5, 2024 (3 updates tracked since 2024).

On this page

About James Robert Baer Md NPPES

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

JAMES ROBERT BAER MD (NPI 1275531493) is an individual radiation oncology provider in Eau Claire, Wisconsin, licensed in New York (275657) and active in the NPI registry since July 2005. He is enrolled in Medicare PECOS, is affiliated with Marshfield Medical Center - Rice Lake, and maintains 3 additional practice locations.

NPPES Registry Identity

NPI1275531493

Entity TypeIndividualMale

Primary Taxonomy2085R0001X

Provider Legal NameJAMES ROBERT BAERCredential: MD

Location Address1400 BELLINGER STREETEau Claire, WI 54703

Mailing AddressPo Box 860912Minneapolis, MN 55486-0912 · (507) 284-2511

Phone(715) 838-5222

Sole ProprietorNo

Medical School CMSTemple University School Of MedicineGraduated 1996

Enumeration DateJuly 12, 2005

Last NPPES UpdateSeptember 16, 20253 updates tracked since enumeration

NPPES CertifiedSeptember 16, 2025

✔ NPI 1275531493 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Radiation OncologyAllopathic & Osteopathic Physicians

Taxonomy Code2085R0001X

Licenses✔ Licensed in NY · 275657✔ Licensed in WI · 84335

Definition

A radiologist who deals with the therapeutic applications of radiant energy and its modifiers and the study and management of disease, especially malignant tumors.

1400 BELLINGER STREET, Eau Claire, WI 54703

Open in Google Maps ↗

Secondary Practice Locations 3

Location 1515 Main StOlean, NY 14760-1513 · Phone (716) 373-2600 · Fax (716) 373-5187

Location 21700 W Stout StRice Lake, WI 54868-5000 · Phone (715) 236-4450

Location 3200 1st St SWRochester, MN 55905-5000 · Phone (507) 284-2511

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 Robert Baer Md 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 ID7618979949

PECOS Enrollment IDI20240904000026

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

Medicare enrollment records show James Baer reassigns Medicare billing to 10 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Mchs Hospitals Inc

1.3 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

Mayo Clinic Health System-Northwest Wisconsin Region, Inc.

1.4 mi

Multi-Specialty

733 W CLAIREMONT AVE
Eau Claire, WI 54701

Reassigned Medicare billing, Wisconsin enrollment
1,248 clinicians in this Medicare group

NPI 1235588831 (715) 838-5222

Lakeview Medical Center Inc Of Rice Lake

35 mi

Clinic/Center

806 2ND ST
Chetek, WI 54728

Reassigned Medicare billing, Wisconsin enrollment
1,616 clinicians in this Medicare group

NPI 1659008605 (715) 924-2000

Memorial Hospital Inc

48 mi

Clinic/Center

N3708 RIVER AVE
Neillsville, WI 54456

Reassigned Medicare billing, Wisconsin enrollment
Also billed through NPI 1346239373 (Wisconsin)
1,440 clinicians in this Medicare group

NPI 1033701800 (715) 743-3101

Marshfield Clinic Inc

66 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

Mayo Clinic Health System-Southwest Wisconsin Region, Inc.

71 mi

Multi-Specialty

800 WEST AVE S
La Crosse, WI 54601

Reassigned Medicare billing, Wisconsin enrollment
1,003 clinicians in this Medicare group

NPI 1629056049 (608) 392-3861

Mayo Clinic

72 mi

Multi-Specialty

200 1ST ST SW
Rochester, MN 55905

Reassigned Medicare billing, Wisconsin enrollment
64 clinicians in this Medicare group

NPI 1922074434 (507) 284-2511

Flambeau Hospital Inc

93 mi

Clinic/Center

98 SHERRY AVE
Park Falls, WI 54552

Reassigned Medicare billing, Wisconsin enrollment
Also billed through NPI 1700963048 (Wisconsin)
1,351 clinicians in this Medicare group

NPI 1194317966 (715) 762-2484

Beaver Dam Community Hosptials Inc

160 mi

Family Medicine

1580 W JAMES ST
Columbus, WI 53925

Reassigned Medicare billing, Wisconsin enrollment
Medicare enrollment name: Beaver Dam Community Hospitals Inc.
1,447 clinicians in this Medicare group

NPI 1275833659 (920) 350-0235

Dlp Marquette Physician Practices Inc

166 mi

Family Medicine

1500 W ICE LAKE RD
Iron River, MI 49935

Reassigned Medicare billing, Michigan enrollment
440 clinicians in this Medicare group

NPI 1790033207 (906) 265-5378

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 16

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.

Ct guidance for insertion of radiation therapy fields 77014

CT guidance for insertion of radiation therapy fields involves using a CT scan to accurately map the area of your body where radiation will be applied. This ensures the radiation targets only the necessary area, minimizing impact to healthy tissues.

494 services42 patients

Calculation of radiation therapy dose 77300

Radiation therapy dose calculation is a process to determine the exact amount of radiation needed to treat a specific area in the body. This calculation helps ensure the treatment is effective while minimizing harm to healthy tissues. It's a key part of planning your radiation therapy.

137 services44 patients

Radiation treatment management, 5 treatment sessions 77427

Radiation treatment management involves a series of 5 sessions where targeted radiation is used to destroy or shrink cancer cells in your body. Each session is carefully planned to maximize effectiveness while minimizing harm to healthy tissues. You may experience side effects which will be closely monitored and managed for your comfort.

132 services45 patients

Design and construction of complex radiation treatment device 77334

The design and construction of a complex radiation treatment device is a process where a specialized instrument is created. This device targets harmful cells with high-energy rays to destroy or damage them, while minimizing impact on healthy cells. This aids in treating conditions like cancer.

79 services38 patients

Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy G6002

Stereoscopic x-ray guidance is a technique used in radiation therapy. It involves taking multiple X-ray images from different angles to create a 3D picture of the area to be treated. This helps accurately pinpoint the exact location for radiation delivery, ensuring the therapy is as effective as possible.

78 services12 patients

Complex radiation therapy planning 77263

Complex radiation therapy planning is a process to determine the most effective way to deliver radiation to a specific area in your body. It involves detailed imaging to map your body's structure, allowing for precise targeting of cancer cells while sparing healthy tissue.

47 services47 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

44 services44 patients

Design and construction of radiation treatment device for high precision radiation therapy 77338

A radiation treatment device is custom-made for each patient to target cancer cells with high precision. It's designed to focus radiation on the tumor, sparing healthy tissue. This process ensures effective therapy while minimizing side effects.

41 services35 patients

High precision radiation therapy planning 77301

High precision radiation therapy planning involves detailed mapping of your body to target cancer cells accurately. Advanced imaging techniques help identify the exact location of the tumor, minimizing harm to healthy tissues. This personalized approach enhances effectiveness and reduces side effects.

35 services35 patients

Telephone medical discussion with physician, 5-10 minutes 99441

A telephone medical discussion with a physician is a brief, 5-10 minute call where you can discuss your health concerns. It's a convenient way to receive medical advice without needing to visit a clinic. It's important to prepare questions in advance to make the most of this time.

27 services27 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

14 services14 patients

Telephone medical discussion with physician, 11-20 minutes 99442

This is a service where you have a phone conversation with your doctor for 11-20 minutes. It's used for discussing health concerns, reviewing test results, or managing ongoing conditions. It's a convenient way to receive medical advice without an in-person visit.

13 services13 patients

Obtaining data needed to develop the optimal radiation treatment, 1 treatment area 77280

This procedure involves gathering essential information to create the best radiation treatment plan for a specific area. It includes scanning the treatment area and using this data to calculate the precise dose of radiation needed to target the disease effectively, while sparing healthy tissue.

12 services11 patients

Management of cranial lesion surgery using radiation over multiple sessions 77435

This procedure involves using targeted radiation to treat a lesion in the brain over several sessions. The radiation destroys the abnormal cells, helping to control or eliminate the lesion. It's a non-invasive treatment, meaning no surgical cuts are made.

12 services12 patients

Obtaining data needed to develop the optimal radiation treatment, 3 or more treatment areas or any number of treatment areas where special treatment is involved 77290

This procedure involves collecting necessary data to plan the best radiation treatment. It may cover 3 or more areas or any area requiring special attention. Data collection includes imaging scans and tests to understand the disease's extent and to tailor a precise, effective treatment plan.

11 services11 patients

Obtaining respiratory data needed to develop the optimal radiation treatment 77293

Obtaining respiratory data is vital for optimal radiation treatment. This involves tracking your breathing patterns to ensure the precise delivery of radiation to the target area, minimizing damage to healthy tissue. It's a non-invasive process and contributes to effective treatment.

11 services11 patients

Hospital Affiliations CMS Care Compare 2

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

Marshfield Medical Center - Rice Lake

Acute Care Hospitals · Rice Lake, WI

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number520011

Location1700 West Stout StreetRice Lake, WI 54868 · Barron County

Emergency services Birthing friendly

Mayo Clinic Health System Eau Claire Hospital

Acute Care Hospitals · Eau Claire, WI

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number520070

Location1221 Whipple StEau Claire, WI 54703 · Eau Claire County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 54703 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

$163.24 typical visit price

range $53.90 – $163.24

Typical copayment $40.81 (range $13.47 – $40.81)

Most-billed visit code 99205

Established Patient

$67.37 typical visit price

range $17.40 – $133.76

Typical copayment $16.84 (range $4.35 – $33.44)

Most-billed visit code 99213

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.

RHIANNON C RILEY APNP

Nurse Practitioner