Rebecca M. Blonsky, M.D.
Nephrology Physician · Marshfield, WI
Rebecca M. Blonsky, M.D. is a nephrology physician with a practice address in Marshfield, Wisconsin, and NPI 1669812764, issued on Jul 3, 2013. Check the license (Wisconsin 62801, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Rebecca M. Blonsky
- Credential
- M.D.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- 62801 WI
Self-reported in NPPES; status is on the state search - Practice location
- 1000 N Oak Ave, Marshfield, WI 54449
- Phone
- (715) 387-5511
- Enumerated
- Jul 3, 2013
- Record last updated
- Apr 1, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20180813001873); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 207 in Wisconsin → Look up another NPI →
Also registered at 1000 N Oak Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Ihab Abdalrahman, MDHospitalist Physician1497855134
- Raquel Abengozar Mingorance, MDStudent in an Organized Health Care Education/Training Program1609437755
- Aanuoluwa Abiola, M.DGeriatric Medicine (Internal Medicine) Physician1598117574
Verify Rebecca M. Blonsky in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 62801Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
61% fewer Medicare Part D claims than the average nephrology physician in 2024
575 Medicare Part D claims for 173 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims.
Most prescribed
- Amlodipine Besylate54 claims
- Lisinopril44 claims
- Carvedilol37 claims
- Furosemide34 claims
- Calcitriol33 claims
- Losartan Potassium28 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.
Industry payments in 2024: $58.21
1 payment: food and beverage; the largest payer was Novartis Pharmaceuticals Corporation. The 8,230 providers of this specialty with any payment received $3,091.37 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Lakeview Medical Center Inc OF Rice LakeHayward, WI
- Mchs Hospitals IncMarshfield, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Rebecca M. Blonsky among 207 nephrology physician records in Wisconsin
Rebecca M. Blonsky, M.D. is one of 207 nephrology physician records with a practice address in Wisconsin. 86% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 72% of them.
- NPI issued2013 · 72% of these records are older, 24% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileYes · 76% of these records are
- Graduated2013 · median 2004 among the 157 with a school on file
- Record last updated2021 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in Wisconsin
There are 207 nephrology physician records in Wisconsin.
All 207 in Wisconsin → Every provider in Marshfield → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Wadad Ailabouni, MDMarshfield, WI 544491811196355
- H Thomas Campbell, MDMarshfield, WI 544491740395201
- Douglas Duffy, MDMarshfield, WI 544491366542227
- Brian Ewert, MDMarshfield, WI 544491306946256
- Siddhartha Kattamanchi, MDMarshfield, WI 544491316388382
- Narayana Murali, MDMarshfield, WI 544491942274352
- Abdallah Qasim, MBBSMarshfield, WI 544491205314036
- Rosemary Reriani, M.D.Marshfield, WI 544491336355825
Common questions
What is Rebecca M. Blonsky, M.D.'s NPI number?
Rebecca M. Blonsky, M.D.'s National Provider Identifier (NPI) is 1669812764, issued on Jul 3, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Rebecca M. Blonsky, M.D. located?
The NPPES record lists a practice address at 1000 N Oak Ave, Marshfield, WI, 54449. Phone: (715) 387-5511. Providers update this record themselves, so call before visiting.
How can I verify Rebecca M. Blonsky, M.D.'s license?
NPPES lists Wisconsin license number 62801, 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 Rebecca M. Blonsky, M.D. prescribe under Medicare Part D?
In 2024, Rebecca M. Blonsky, M.D. had 575 Medicare Part D claims for 173 beneficiaries; the average among nephrology physician prescribers was 1,465. 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.