Richard P. Day, MD
Internal Medicine Physician · Madison, WI
Richard P. Day, MD is an internal medicine physician with a practice address in Madison, Wisconsin, and NPI 1972570653, issued on Mar 2, 2006. Check the license (Wisconsin 26768, as entered in NPPES) on the Wisconsin Medical Examining Board; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Richard P. Day
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 26768 WI
Self-reported in NPPES; status is on the state search - Practice location
- 20 S Park St, Madison, WI 53715
- Phone
- (608) 287-2435
- Enumerated
- Mar 2, 2006
- Record last updated
- Jan 30, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (608) 287-2266
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,078 in Wisconsin → Look up another NPI →
Also registered at 20 S Park St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Luke Addesso, MDPediatrics Physician1013470186
- Mackenzie Asel, M.D.Dermatology Physician1831538099
- Elizabeth Bartholomew, LCSWClinical Social Worker1679851398
- Sarah Benedict, NPNurse Practitioner1336648039
- Eliza Bennett, M.D.Obstetrics & Gynecology Physician1003852161
- Stephen Bernsten, MDPlastic Surgery Physician1114989043
Verify Richard P. Day in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 26768Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Richard P. Day among 2,078 internal medicine physician records in Wisconsin
Richard P. Day, 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 not. Its NPI, issued in 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 46% newer
- In a Medicare fileNo · 70% of these records are
- In the CMS Doctors and Clinicians fileNo · 53% of these records are
- Record last updated2009 · 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).
417 internal medicine physician records list a practice address in Madison
They are 417 of the 15,014 NPPES records with a practice address in Madison, and 2,078 internal medicine physician records in Wisconsin. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 2,078 in Wisconsin → Every provider in Madison → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Thomas Bugliosi, M.D.Madison, WI 537151629055124
- Rebecca Byers, MDMadison, WI 537151568439248
- Tony Chang, MDMadison, WI 537151831166990
- Heather Childers-Okas, DOMadison, WI 537151093782765
- Elizabeth George, MDMadison, WI 537151255308409
- Jeremy Jaskunas, MDMadison, WI 537151568438414
- Frank Kilpatrick, MDMadison, WI 537151154397172
- Ray Kimura, MDMadison, WI 537151184690125
Common questions
What is Richard P. Day, MD's NPI number?
Richard P. Day, MD's National Provider Identifier (NPI) is 1972570653, issued on Mar 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Richard P. Day, MD located?
The NPPES record lists a practice address at 20 S Park St, Madison, WI, 53715. Phone: (608) 287-2435. Providers update this record themselves, so call before visiting.
How can I verify Richard P. Day, MD's license?
NPPES lists Wisconsin license number 26768, 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.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.