Rimas V. Janusonis, MD
Family Medicine Physician · Oshkosh, WI
Rimas V. Janusonis, MD is a family medicine physician with a practice address in Oshkosh, Wisconsin, and NPI 1558389890, issued on Jul 17, 2006. Check the license (Wisconsin 45914, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Rimas V. Janusonis
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 45914 WI
Self-reported in NPPES; status is on the state search - Practice location
- 600 N Westhaven Dr, Oshkosh, WI 54904
- Phone
- (920) 237-5000
- Enumerated
- Jul 17, 2006
- Record last updated
- Aug 26, 2009 (not updated in 17 years: call before relying on the address or phone)
- Medicaid ID
- 34435100 WI
- Medicare enrollment
- Enrolled (PECOS I20040102000431); accepts Medicare assignment
- Medical or professional school
- Rush Medical College Of Rush University, 1996
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,765 in Wisconsin → Look up another NPI →
Also registered at 600 N Westhaven Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Sarah Danahy, LCSWClinical Social Worker1053472142
- Cynthia Fisher, D.O.Family Medicine Physician1588824908
Verify Rimas V. Janusonis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 45914Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.4 times the Medicare Part D claims of the average family medicine physician in 2024
8,338 Medicare Part D claims for 497 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 506 claims were for opioids.
Most prescribed
- Levothyroxine Sodium319 claims
- Pantoprazole Sodium259 claims
- Atorvastatin Calcium244 claims
- Omeprazole244 claims
- Lisinopril243 claims
- Amlodipine Besylate206 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
- Thedacare, IncorporatedNeenah, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Rimas V. Janusonis among 3,765 family medicine physician records in Wisconsin
Rimas V. Janusonis, MD is one of 3,765 family medicine physician records with a practice address in Wisconsin. 75% 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 10% of them.
- NPI issued2006 · 10% of these records are older, 46% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1996 · median 2007 among the 2,347 with a school on file
- Record last updated2009 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
52 family medicine physician records list a practice address in Oshkosh
They are 52 of the 1,527 NPPES records with a practice address in Oshkosh, and 3,765 family medicine physician records in Wisconsin.
All 3,765 in Wisconsin → Every provider in Oshkosh → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Jon Carlson, MDOshkosh, WI 549041639188782
- Matthew Fischer, MDOshkosh, WI 549041962517011
- Pamela House, MDOshkosh, WI 549041851408470
- Daniel Kaiser, MDOshkosh, WI 549041437133824
- Michael Knier, MDOshkosh, WI 549041861509309
- Phyllis Lee, MDOshkosh, WI 549041124010749
- Gregory Long, MDOshkosh, WI 549041720008881
- Stephen Maassen, MDOshkosh, WI 549041972610426
Common questions
What is Rimas V. Janusonis, MD's NPI number?
Rimas V. Janusonis, MD's National Provider Identifier (NPI) is 1558389890, issued on Jul 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Rimas V. Janusonis, MD located?
The NPPES record lists a practice address at 600 N Westhaven Dr, Oshkosh, WI, 54904. Phone: (920) 237-5000. Providers update this record themselves, so call before visiting.
How can I verify Rimas V. Janusonis, MD's license?
NPPES lists Wisconsin license number 45914, 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 Rimas V. Janusonis, MD prescribe under Medicare Part D?
In 2024, Rimas V. Janusonis, MD had 8,338 Medicare Part D claims for 497 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.