Nancy C. Rainiero, MD
Internal Medicine Physician · Janesville, WI
Nancy C. Rainiero, MD is an internal medicine physician with a practice address in Janesville, Wisconsin, and NPI 1174564363, issued on Jun 9, 2006. Check the license (Wisconsin 29467-020, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Nancy C. Rainiero
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 29467-020 WI
Self-reported in NPPES; status is on the state search - Practice location
- 3200 E Racine St, Janesville, WI 53546
- Phone
- (608) 371-8000
- Enumerated
- Jun 9, 2006
- Record last updated
- Nov 6, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (608) 371-8905
- Medicaid ID
- 1174564363 WI
- Medicare enrollment
- Enrolled (PECOS I20100604001159); accepts Medicare assignment
- Medical or professional school
- Indiana University School Of Medicine, 1987
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,078 in Wisconsin → Look up another NPI →
Also registered at 3200 E Racine St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Omar Alnaser, M.D.Pediatrics Physician1396474201
- Jenny Amani, M.D.Occupational Medicine Physician1629212899
- Molly ArttusPhysician Assistant1366233041
- Brittany Austin, PA-CMedical Physician Assistant1013226968
- Timothy Axe, DPMPodiatrist1619932621
- Susan Baird, DNP, APRN, FNP-BCNurse Practitioner1225305758
Verify Nancy C. Rainiero in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 29467-020Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4.2 times the Medicare Part D claims of the average internal medicine physician in 2024
13,387 Medicare Part D claims for 898 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 204 claims were for opioids.
Most prescribed
- Levothyroxine Sodium717 claims
- Atorvastatin Calcium713 claims
- Omeprazole623 claims
- Metoprolol Succinate494 claims
- Furosemide493 claims
- Losartan Potassium455 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
- Dean Health Systems IncJanesville, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nancy C. Rainiero among 2,078 internal medicine physician records in Wisconsin
Nancy C. Rainiero, MD is one of 2,078 internal medicine physician records with a practice address in Wisconsin. 70% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 46% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated1987 · median 2002 among the 1,098 with a school on file
- Record last updated2020 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
22 internal medicine physician records list a practice address in Janesville
They are 22 of the 1,538 NPPES records with a practice address in Janesville, and 2,078 internal medicine physician records in Wisconsin.
All 2,078 in Wisconsin → Every provider in Janesville → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Mark Angevine, MDJanesville, WI 535461861586422
- Kristine Arndt, MDJanesville, WI 535461720442809
- Ryndon Bautista, M.D.Janesville, WI 535461225230170
- Maria Fassari, MDJanesville, WI 535461295860500
- Nader Honarkhah, MDJanesville, WI 535461851464242
- Hena Kausar, M.DJanesville, WI 535461821418583
- Kauseruzzaman Khan, MDJanesville, WI 535461093724304
- Kathryn Lilley, MDJanesville, WI 535461104872670
Common questions
What is Nancy C. Rainiero, MD's NPI number?
Nancy C. Rainiero, MD's National Provider Identifier (NPI) is 1174564363, issued on Jun 9, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Nancy C. Rainiero, MD located?
The NPPES record lists a practice address at 3200 E Racine St, Janesville, WI, 53546. Phone: (608) 371-8000. Providers update this record themselves, so call before visiting.
How can I verify Nancy C. Rainiero, MD's license?
NPPES lists Wisconsin license number 29467-020, 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 Nancy C. Rainiero, MD prescribe under Medicare Part D?
In 2024, Nancy C. Rainiero, MD had 13,387 Medicare Part D claims for 898 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.