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DR. CAROL MARIE GRABOWSKI MD
NPI 1669582532
Radiology - Radiation Oncology in Appleton, WI

Active since August 30, 2006PECOS Enrolled
82.79/100
CMS Quality Rating
3925 N GATEWAY DR, APPLETON, WI 54913(920) 749-1171(920) 749-1172 Get Directions Write a Review

NPPES record last updated: February 28, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Feb 28, 2025, Feb 10, 2016, Jan 11, 2016 (3 updates tracked since 2016).

About Dr. Carol Marie Grabowski Md NPPES

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

DR. CAROL MARIE GRABOWSKI MD (NPI 1669582532) is an individual radiation oncology provider in Appleton, Wisconsin, licensed in Wisconsin (64957) and active in the NPI registry since August 2006. She is enrolled in Medicare PECOS and maintains a secondary practice location in Stevens Point.

NPPES Registry Identity

NPI1669582532
Entity TypeIndividualFemale
Primary Taxonomy2085R0001X
Provider Legal NameDR. CAROL MARIE GRABOWSKICredential: MD
Location Address3925 N GATEWAY DRAppleton, WI 54913-7863
Mailing Address3232 N Ballard Rd, Suite 200Appleton, WI 54911-8804 · (920) 749-9668 · Fax (920) 734-5307
Phone(920) 749-1171
Fax(920) 749-1172
Sole ProprietorNo
Enumeration DateAugust 30, 2006
Last NPPES UpdateFebruary 28, 20253 updates tracked since enumeration
NPPES CertifiedFebruary 28, 2025
✔ NPI 1669582532 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyRadiology · Radiation OncologyAllopathic & Osteopathic Physicians
Taxonomy Code2085R0001X
Licenses✔ Licensed in WI · 64957✔ Licensed in MN · 33288
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.
Also ListedRadiology · Hospice and Palliative MedicineTaxonomy 2085H0002X · License 33288 (MN)
3925 N GATEWAY DR, Appleton, WI 54913
Open in Google Maps ↗

Secondary Practice Location 1

Location 14100 State Highway 66Stevens Point, WI 54482-8410 · Phone (715) 343-7730

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, HealthPartners, Sanford Health Plan and more.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Carol Marie Grabowski Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Carol Grabowski reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Beaver Dam Community Hospitals Inc
49 mi
Family Medicine
180 GATEWAY DR
Waupun, WI 53963
  • Reassigned Medicare billing, Wisconsin enrollment
  • 1,447 clinicians in this Medicare group
NPI 1629374780 (920) 345-1306
Mchs Hospitals, Inc.
59 mi
Mental Health (Including Community Mental Health Center)
2450 VINEYARD DR
Plover, WI 54467
  • Reassigned Medicare billing, Wisconsin enrollment
  • Also billed through NPI 1952890873 (Wisconsin)
  • 2,476 clinicians in this Medicare group
NPI 1386249894 (715) 342-0290
Marshfield Clinic Inc
93 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
Memorial Hospital, Inc
112 mi
Clinical Medical Laboratory
216 SUNSET PL, MEMORIAL HOSPITAL, INC
Neillsville, WI 54456
  • Reassigned Medicare billing, Wisconsin enrollment
  • Also billed through NPI 1346239373 (Wisconsin)
  • 1,283 clinicians in this Medicare group
NPI 1679746747 (715) 743-3101
Flambeau Hospital Inc
151 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
Lakeview Medical Center Inc Of Rice Lake
176 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
Allina Health System
224 mi
Internal Medicine
1175 NININGER RD
Hastings, MN 55033
  • Reassigned Medicare billing, Minnesota enrollment
  • 3,733 clinicians in this Medicare group
NPI 1881118149 (651) 480-4100

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 6

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.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
51 services37 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.
45 services18 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.
40 services12 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.
24 services13 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.
16 services16 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.
15 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 54913 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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

82.79/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality68.98
Promoting Interoperability99
Improvement Activities40
Cost66.19

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.

FOX VALLEY HEMATOLOGY & ONCOLOGY S C
Pharmacy (Community/Retail Pharmacy)
3925 N GATEWAY DR, SUITE 100
APPLETON, WI 54913
Outagamie County (920) 702-4802
BRITTANY E GOODRICH-BRAUN
Family Medicine
3925 N GATEWAY DR
APPLETON, WI 54913
Outagamie County (920) 830-6877
STEVEN R HAMEL APN FP-C
Nurse Practitioner (Family)
3925 N GATEWAY DR
APPLETON, WI 54913
Outagamie County (920) 830-6877
HEATHER SCHEELK DNP, FNP-BC
Nurse Practitioner (Family)
3925 N GATEWAY DR
APPLETON, WI 54913
Outagamie County (920) 840-4258
DIRK STEINERT MD
Internal Medicine
3925 N GATEWAY DR
APPLETON, WI 54913
Outagamie County (920) 830-6877
SABA R KHAN DO
Family Medicine
3925 N GATEWAY DR
APPLETON, WI 54913
Outagamie County (920) 702-6371
MS. CYNTHIA FRANCES SUSEDIK D.O.
Family Medicine
3925 N GATEWAY DR
APPLETON, WI 54913
Outagamie County (920) 830-6877
KATHLEEN M ERDAHL
Nurse Practitioner (Family)
3925 N GATEWAY DR
APPLETON, WI 54913
Outagamie County (920) 830-6877

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 Carol Grabowski's NPI number?

The NPI number for Carol Grabowski is 1669582532. It was assigned to this individual provider in the NPPES registry on August 30, 2006.

Where is Carol Grabowski located?

Carol Grabowski practices at 3925 N Gateway Dr, Appleton, WI 54913. The listed phone number is (920) 749-1171.

What is Carol Grabowski's specialty?

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

Is Carol Grabowski enrolled in Medicare?

Yes. Carol Grabowski is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Carol Grabowski's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Carol Grabowski reassigns Medicare benefits to 7 organizations: Beaver Dam Community Hospitals Inc (Waupun, WI), Mchs Hospitals, Inc. (Plover, WI), Marshfield Clinic Inc (Marshfield, WI), Memorial Hospital, Inc (Neillsville, WI), Flambeau Hospital Inc (Park 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 Carol Grabowski's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Carol Grabowski accept?

Health plans from Anthem Blue Cross and Blue Shield, HealthPartners, Sanford Health Plan and Security Health Plan list Carol Grabowski 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.

When was this NPI record last updated?

The NPPES record for Carol Grabowski was last updated on February 28, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.