Ryndon Negrillo Bautista, M.D.
Internal Medicine Physician · Janesville, WI
Ryndon Negrillo Bautista, M.D. is an internal medicine physician with a practice address in Janesville, Wisconsin, and NPI 1225230170, issued on Jun 4, 2007. Check the license (Wisconsin 49833020, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Ryndon Negrillo Bautista
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 49833020 WI
Self-reported in NPPES; status is on the state search - Practice location
- 3524 E Milwaukee St, Janesville, WI 53546
- Phone
- (608) 756-7100
- Enumerated
- Jun 4, 2007
- Record last updated
- Aug 27, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20070827000182); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,078 in Wisconsin → Look up another NPI →
Also registered at 3524 E Milwaukee St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mark Angevine, MDInternal Medicine Physician1861586422
- Lindsay Antczak, PTAPhysical Therapy Assistant1427126598
- Kristine Arndt, MDInternal Medicine Physician1720442809
- Mary Augustian, MDPediatrics Physician1295259513
- Hamid Bashir, MDRheumatology Physician1225257694
- Korl Bomkamp, DPTPhysical Therapist1205568912
Verify Ryndon Negrillo Bautista in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 49833020Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4.5 times the Medicare Part D claims of the average internal medicine physician in 2024
14,337 Medicare Part D claims for 938 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 432 claims were for opioids.
Most prescribed
- Atorvastatin Calcium1,112 claims
- Levothyroxine Sodium733 claims
- Omeprazole653 claims
- Lisinopril643 claims
- Amlodipine Besylate489 claims
- Losartan Potassium397 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
- Mercy Health System CorporationJanesville, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ryndon Negrillo Bautista among 2,078 internal medicine physician records in Wisconsin
Ryndon Negrillo Bautista, M.D. 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 2007, is newer than 54% of them.
- NPI issued2007 · 54% of these records are older, 40% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2001 · median 2002 among the 1,098 with a school on file
- Record last updated2007 · 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
- 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
- Dale Miller, MDJanesville, WI 535461932148491
Common questions
What is Ryndon Negrillo Bautista, M.D.'s NPI number?
Ryndon Negrillo Bautista, M.D.'s National Provider Identifier (NPI) is 1225230170, issued on Jun 4, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Ryndon Negrillo Bautista, M.D. located?
The NPPES record lists a practice address at 3524 E Milwaukee St, Janesville, WI, 53546. Phone: (608) 756-7100. Providers update this record themselves, so call before visiting.
How can I verify Ryndon Negrillo Bautista, M.D.'s license?
NPPES lists Wisconsin license number 49833020, 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 Ryndon Negrillo Bautista, M.D. prescribe under Medicare Part D?
In 2024, Ryndon Negrillo Bautista, M.D. had 14,337 Medicare Part D claims for 938 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.